Water Quality in New York
2,245 water systems • 795 cities • EPA SDWIS Data
2,245
Water Systems
93,834
Total Violations
5,682
Health-Based Violations
18,268,008
Population Served
Overview
New York has 2,245 active community water systems serving 18,268,008 people. These systems have accumulated 93,834 EPA Safe Drinking Water Act violations on record, of which 5,682 are health-based violations (meaning a contaminant exceeded safe levels).
Common contaminants found in violations: Contaminant 1032, TTHM, Total Haloacetic Acids (HAA5), Chlorine, E. coli, Fecal Coliform, Stage 2 DBP, Selenium, Disinfection Byproducts, Nitrate.
Cities with Most Violations in New York
| # | City | Violations | Health-Based | Water Systems | Population |
|---|---|---|---|---|---|
| 1 | Monroe | 2,436 | 92 | 21 | 62,333 |
| 2 | Canaseraga | 1,396 | 2 | 2 | 1,440 |
| 3 | Hudson | 1,361 | 11 | 11 | 13,834 |
| 4 | Pawling | 1,303 | 16 | 3 | 2,400 |
| 5 | Greenville | 1,215 | 3 | 2 | 1,130 |
| 6 | Glens Falls | 1,091 | 21 | 6 | 66,073 |
| 7 | Orchard Park | 1,037 | 19 | 3 | 3,450 |
| 8 | Ballston Spa | 939 | 10 | 10 | 7,915 |
| 9 | Lagrangeville | 929 | 28 | 4 | 3,212 |
| 10 | Roslyn Heights | 918 | 2 | 3 | 13,680 |
Largest Cities in New York
| # | City | Population | Violations | Water Systems |
|---|---|---|---|---|
| 1 | Valhalla | 8,292,196 | 76 | 12 |
| 2 | Hauppauge | 1,102,050 | 12 | 2 |
| 3 | Buffalo | 793,487 | 308 | 13 |
| 4 | Rochester | 750,824 | 591 | 30 |
| 5 | Syracuse | 542,280 | 56 | 5 |
| 6 | West Nyack | 486,322 | 437 | 24 |
| 7 | Merrick | 372,655 | 150 | 12 |
| 8 | Yonkers | 211,569 | 2 | 1 |
| 9 | Utica | 126,400 | 279 | 2 |
| 10 | New Hyde Park | 120,000 | 1 | 1 |
All Cities in New York
| City | Population | Violations | Health Violations | Contaminants |
|---|---|---|---|---|
| Valhalla | 8,292,196 | 76 | 31 | Bromate, Total Haloacetic Acids (HAA5) |
| Hauppauge | 1,102,050 | 12 | 3 | Contaminant 1032, Contaminant 1094 |
| Buffalo | 793,487 | 308 | 13 | Chlorine, Chlorine Dioxide, TTHM |
| Rochester | 750,824 | 591 | 15 | Chlorine, Chlorine Dioxide, Contaminant 2806 +3 more |
| Syracuse | 542,280 | 56 | 31 | Barium, Bromate, Chlorine +1 more |
| West Nyack | 486,322 | 437 | 124 | Bromate, Contaminant 1017, Contaminant 1028 +6 more |
| Merrick | 372,655 | 150 | 16 | Contaminant 1017, Disinfection Byproducts, E. coli +1 more |
| Yonkers | 211,569 | 2 | 1 | Bromate |
| Utica | 126,400 | 279 | 7 | E. coli, TTHM |
| New Hyde Park | 120,000 | 1 | 0 | |
| East Meadow | 112,000 | 1 | 1 | Contaminant 1028 |
| Albany | 110,048 | 546 | 53 | Chlorine, Contaminant 1017, Contaminant 1028 +1 more |
| Poughkeepsie | 96,224 | 770 | 46 | Beryllium, Contaminant 1017, Contaminant 1028 +9 more |
| Latham | 85,590 | 0 | 0 | |
| Centerport | 81,760 | 3 | 0 | |
| Ithaca | 81,341 | 249 | 9 | Contaminant 1008, Contaminant 1032, E. coli +2 more |
| Great Neck | 74,400 | 0 | 0 | |
| Mount Vernon | 74,333 | 5 | 1 | Gross Alpha |
| Tonawanda | 72,571 | 0 | 0 | |
| Glens Falls | 66,073 | 1,091 | 21 | Chlorine, Contaminant 1017, Disinfection Byproducts +5 more |
| Binghamton | 65,673 | 356 | 5 | Contaminant 2049, Disinfection Byproducts, Stage 2 DBP |
| Monroe | 62,333 | 2,436 | 92 | Barium, Contaminant 1028, Contaminant 2806 +4 more |
| White Plains | 62,154 | 226 | 3 | |
| Schenectady | 61,876 | 218 | 7 | Chlorine |
| Mamaroneck | 59,629 | 10 | 5 | Bromate, Fecal Coliform, Total Haloacetic Acids (HAA5) |
| Niagara Falls | 58,293 | 0 | 0 | |
| Syosset | 58,000 | 0 | 0 | |
| Hempstead | 56,000 | 4 | 0 | |
| Elmira | 54,338 | 309 | 0 | |
| Farmingdale | 53,444 | 1 | 0 | |
| Newburgh | 53,000 | 818 | 87 | Chlorine, Chlorine Dioxide, Contaminant 1028 +8 more |
| North Tonawanda | 49,685 | 0 | 0 | |
| Middletown | 49,238 | 518 | 50 | Contaminant 1028, Disinfection Byproducts, Fecal Coliform +1 more |
| Lockport | 48,480 | 8 | 0 | |
| Hicksville | 48,000 | 0 | 0 | |
| Jamestown | 46,737 | 21 | 0 | |
| Endicott | 45,028 | 3 | 2 | Contaminant 2049, Stage 2 DBP |
| Freeport | 45,000 | 0 | 0 | |
| Massapequa | 43,000 | 2 | 0 | |
| Watertown | 42,494 | 263 | 148 | Chlorine, Contaminant 2805, Fecal Coliform +2 more |
| Greenlawn | 42,000 | 95 | 0 | |
| Clifton Park | 40,900 | 751 | 19 | Chlorine, Contaminant 1017, Contaminant 1028 +1 more |
| Greenburgh | 39,993 | 3 | 1 | Bromate |
| Plattsburgh | 37,338 | 40 | 3 | Chlorine |
| Yorktown Heights | 37,298 | 45 | 10 | Chlorine Dioxide, Disinfection Byproducts, Stage 2 DBP +1 more |
| Auburn | 36,935 | 79 | 37 | TTHM |
| Port Washington | 36,900 | 8 | 8 | Contaminant 2806 |
| Rome | 36,485 | 12 | 5 | TTHM |
| Riverhead | 35,075 | 14 | 6 | Contaminant 1032, Contaminant 1041, Contaminant 2805 |
| Long Beach | 35,000 | 2 | 1 | E. coli |
| Huntington | 34,522 | 89 | 0 | |
| Fort Drum | 34,000 | 3 | 2 | TTHM |
| Plainview | 34,000 | 3 | 2 | Ethylene Dibromide, cis-1,2-Dichloroethylene |
| West Hempstead | 33,531 | 3 | 0 | |
| Bethpage | 33,000 | 0 | 0 | |
| Saratoga Springs | 32,520 | 468 | 8 | Chlorine, Contaminant 1017 |
| Delmar | 31,152 | 321 | 39 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Guilderland | 30,873 | 606 | 9 | Contaminant 1028, Contaminant 1032, Contaminant 2806 +1 more |
| Oswego | 30,800 | 231 | 2 | Chlorine |
| Kings Park | 30,222 | 0 | 0 | |
| Ossining | 30,130 | 343 | 10 | Bromate, Chlorine Dioxide, Contaminant 2806 +2 more |
| Rotterdam | 30,080 | 31 | 0 | |
| East Syracuse | 29,800 | 15 | 1 | E. coli |
| Cortlandt Manor | 28,369 | 9 | 1 | Fecal Coliform |
| Glen Cove | 28,000 | 1 | 0 | |
| New Windsor | 25,942 | 52 | 0 | |
| Brockport | 25,918 | 9 | 0 | |
| Wappingers Falls | 25,423 | 644 | 17 | Contaminant 1017, Contaminant 2805, Contaminant 2806 +3 more |
| Amsterdam | 24,845 | 441 | 25 | Chlorine, Contaminant 1017, Contaminant 1920 +4 more |
| Rockville Centre | 24,700 | 3 | 0 | |
| Kingston | 24,501 | 677 | 85 | Barium, Bromate, Contaminant 1017 +2 more |
| Palmyra | 24,471 | 21 | 21 | TTHM |
| Peekskill | 24,332 | 83 | 0 | |
| Canandaigua | 24,305 | 140 | 45 | Stage 2 DBP, TTHM |
| Garden City | 23,272 | 1 | 0 | |
| Vestal | 22,760 | 142 | 27 | Chlorine, Ethylene Dibromide, Stage 2 DBP |
| Niskayuna | 22,317 | 131 | 0 | |
| Queensbury | 22,073 | 89 | 5 | Chlorine, Contaminant 1028 |
| Scarsdale | 21,649 | 0 | 0 | |
| Mineola | 20,600 | 3 | 0 | |
| Westbury | 20,500 | 3 | 0 | |
| Cortland | 20,451 | 48 | 0 | |
| Massena | 20,046 | 21 | 1 | Chlorine |
| Franklin Square | 20,000 | 114 | 0 | |
| Grand Island | 19,500 | 208 | 0 | |
| Lewiston | 19,038 | 0 | 0 | |
| Gloversville | 18,182 | 126 | 8 | Contaminant 1028, Contaminant 1920, E. coli |
| Garden City Park | 18,000 | 0 | 0 | |
| Chappaqua | 17,514 | 26 | 0 | |
| Fishkill | 17,375 | 385 | 27 | Chlorine, Chromium, Contaminant 1017 +3 more |
| Oneonta | 17,291 | 385 | 0 | |
| Fulton | 17,199 | 152 | 11 | Chlorine, Disinfection Byproducts |
| Johnson City | 17,077 | 12 | 0 | |
| Roslyn | 17,000 | 1 | 0 | |
| Cohoes | 16,883 | 11 | 3 | Chlorine, E. coli |
| Geneva | 16,454 | 123 | 0 | |
| Clay | 16,084 | 60 | 0 | |
| East Greenbush | 15,843 | 5 | 2 | TTHM |
| Beacon | 15,771 | 135 | 8 | Bromate, Contaminant 1028, Contaminant 1032 |
| Victor | 15,737 | 272 | 10 | Contaminant 1028, TTHM |
| Kenmore | 15,453 | 295 | 2 | Chlorine, Contaminant 1028 |
| Horseheads | 15,050 | 657 | 3 | Fecal Coliform |
| Halfmoon | 15,000 | 2 | 0 | |
| Glenville | 15,000 | 20 | 0 | |
| Olean | 14,877 | 14 | 1 | Stage 2 DBP |
| Nyack | 14,700 | 36 | 26 | TTHM |
| Hudson | 13,834 | 1,361 | 11 | Chlorine, Contaminant 1028, Contaminant 2805 +4 more |
| Roslyn Heights | 13,680 | 918 | 2 | Chlorine |
| Corning | 13,310 | 423 | 0 | |
| Malone | 13,232 | 0 | 0 | |
| Gansevoort | 12,833 | 483 | 52 | Barium, Chlorine, Contaminant 1028 +2 more |
| Scotia | 12,800 | 7 | 2 | Disinfection Byproducts |
| Dunkirk | 12,743 | 80 | 1 | Stage 2 DBP |
| Hampton Bays | 12,500 | 40 | 0 | |
| Pleasantville | 12,353 | 29 | 5 | Contaminant 2805, Selenium |
| Monticello | 12,037 | 290 | 6 | Chlorine, Contaminant 2920, Disinfection Byproducts +1 more |
| Suffern | 12,030 | 5 | 2 | Chlorine, Contaminant 2806 |
| Fort Montgomery | 12,000 | 7 | 4 | TTHM |
| Oneida | 11,993 | 13 | 5 | E. coli, Stage 2 DBP, TTHM |
| Waterloo | 11,909 | 132 | 0 | |
| Medina | 11,793 | 13 | 0 | |
| Babylon | 11,600 | 5 | 2 | Disinfection Byproducts |
| Hudson Falls | 11,530 | 26 | 3 | Chlorine |
| Mount Kisco | 11,187 | 11 | 8 | Chlorine Dioxide, Fecal Coliform, Gross Alpha |
| Lakeville | 11,066 | 40 | 19 | E. coli, Fecal Coliform, TTHM |
| Central Valley | 11,028 | 7 | 2 | Contaminant 1032 |
| Tarrytown | 11,000 | 8 | 3 | Total Haloacetic Acids (HAA5) |
| Hornell | 10,602 | 10 | 6 | Chlorine Dioxide, E. coli |
| Wynantskill | 10,506 | 16 | 8 | Chlorine, Fecal Coliform, TTHM |
| Shortsville | 10,462 | 57 | 0 | |
| Fredonia | 10,439 | 443 | 0 | |
| Elma | 10,287 | 4 | 0 | |
| Wolcott | 10,244 | 10 | 4 | Fecal Coliform |
| Ogdensburg | 10,214 | 55 | 1 | Disinfection Byproducts |
| Mahopac | 10,190 | 128 | 76 | Contaminant 1017, Contaminant 1028, Fecal Coliform |
| Ontario | 10,136 | 5 | 0 | |
| Warwick | 10,095 | 169 | 110 | Contaminant 1017, Contaminant 1028, Disinfection Byproducts +1 more |
| Sleepy Hollow | 10,017 | 7 | 1 | Endrin |
| Bedford Hills | 10,006 | 48 | 40 | Contaminant 1017, Contaminant 2805, Contaminant 2806 |
| Burnt Hills | 10,000 | 18 | 1 | Mercury |
| Brewster | 9,917 | 83 | 30 | Contaminant 1017, Contaminant 1028, Contaminant 2806 |
| Waterford | 9,800 | 3 | 1 | Mercury |
| New Paltz | 9,742 | 483 | 1 | Total Haloacetic Acids (HAA5) |
| Cornwall-On-Hudson | 9,700 | 20 | 0 | |
| Middleport | 9,627 | 0 | 0 | |
| Seneca Falls | 9,550 | 86 | 0 | |
| Apalachin | 9,525 | 6 | 1 | Contaminant 2805 |
| Rensselaer | 9,471 | 24 | 7 | E. coli, TTHM |
| Goshen | 9,405 | 247 | 65 | Contaminant 1028, Contaminant 1032, Contaminant 2650 +5 more |
| Norwich | 9,354 | 17 | 5 | Cadmium, E. coli |
| Newfane | 9,304 | 0 | 0 | |
| Baldwinsville | 9,280 | 14 | 1 | Contaminant 1022 |
| Briarcliff Manor | 9,250 | 4 | 4 | Contaminant 1017, Disinfection Byproducts, Fecal Coliform |
| Port Jervis | 9,246 | 309 | 5 | Chlorine Dioxide, E. coli, Stage 2 DBP |
| Saugerties | 9,179 | 255 | 1 | Stage 2 DBP |
| Scriba | 9,044 | 7 | 0 | |
| Homer | 9,029 | 560 | 5 | Cadmium, Chlorine, Chlorine Dioxide +1 more |
| Carle Place | 9,005 | 0 | 0 | |
| Chautauqua | 9,000 | 81 | 0 | |
| Malta | 8,950 | 15 | 2 | Contaminant 1028 |
| Youngstown | 8,941 | 0 | 0 | |
| Johnstown | 8,904 | 16 | 2 | Total Haloacetic Acids (HAA5) |
| Dansville | 8,900 | 4 | 1 | Chlorine |
| Wellsville | 8,874 | 341 | 4 | Chlorine, Contaminant 1032, Fecal Coliform |
| Big Flats | 8,845 | 77 | 1 | E. coli |
| Herkimer | 8,822 | 145 | 24 | Disinfection Byproducts, Fecal Coliform |
| Somers | 8,810 | 708 | 52 | Barium, Contaminant 1028, Contaminant 1032 +3 more |
| Oyster Bay | 8,700 | 1 | 0 | |
| Potsdam | 8,607 | 138 | 3 | Chlorine, TTHM |
| Catskill | 8,406 | 274 | 48 | Barium, Chlorine, E. coli +2 more |
| South Fallsburg | 8,370 | 35 | 4 | Contaminant 2806, Stage 2 DBP |
| Hopewell Jctn | 8,321 | 97 | 18 | Contaminant 1017, Contaminant 1028, Contaminant 1032 +6 more |
| Washingtonville | 8,188 | 454 | 0 | |
| Ilion | 8,053 | 122 | 2 | Beryllium, Disinfection Byproducts |
| Sodus | 8,012 | 2 | 0 | |
| Croton-On-Hudson | 8,000 | 3 | 0 | |
| Penn Yan | 7,996 | 176 | 4 | E. coli, Fecal Coliform |
| Batavia | 7,949 | 1 | 1 | Contaminant 2424 |
| Ballston Spa | 7,915 | 939 | 10 | Chlorine, Contaminant 1017, Contaminant 2805 +1 more |
| Liberty | 7,877 | 508 | 2 | Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| Chester | 7,876 | 154 | 37 | Contaminant 1017, Contaminant 1028, Disinfection Byproducts +2 more |
| Alfred | 7,700 | 107 | 3 | Disinfection Byproducts, Stage 2 DBP |
| Pine Bush | 7,600 | 100 | 24 | Contaminant 1028, Contaminant 1032, Gross Alpha +1 more |
| Troy | 7,539 | 102 | 3 | TTHM |
| Locust Valley | 7,500 | 0 | 0 | |
| Walden | 7,346 | 38 | 0 | |
| Williston Park | 7,287 | 2 | 1 | Mercury |
| Wilson | 7,206 | 1 | 0 | |
| Lake Katrine | 7,179 | 61 | 2 | TTHM |
| Canton | 7,105 | 23 | 0 | |
| Painted Post | 7,068 | 250 | 0 | |
| East Aurora | 6,845 | 307 | 7 | Chlorine, Contaminant 1028 |
| Montgomery | 6,823 | 51 | 1 | Contaminant 1017 |
| Red Hook | 6,791 | 38 | 0 | |
| Bayville | 6,700 | 1 | 0 | |
| Irvington-On-Hudson | 6,631 | 1 | 0 | |
| Moreau | 6,600 | 9 | 0 | |
| Williamson | 6,600 | 18 | 0 | |
| Rhinebeck | 6,565 | 20 | 3 | Contaminant 2805, Stage 2 DBP, Total Haloacetic Acids (HAA5) |
| Larchmont | 6,485 | 9 | 0 | |
| Silver Creek | 6,480 | 141 | 2 | Fecal Coliform, Stage 2 DBP |
| Coxsackie | 6,386 | 13 | 0 | |
| Pulaski | 6,374 | 10 | 0 | |
| Highland Falls | 6,301 | 32 | 9 | Contaminant 2920, TTHM |
| Attica | 6,259 | 79 | 9 | Chlorine, Total Haloacetic Acids (HAA5) |
| Dannemora | 6,176 | 86 | 3 | Mercury, Stage 2 DBP |
| Skaneateles | 6,168 | 56 | 31 | Chlorine, Fecal Coliform |
| Ellenville | 6,070 | 146 | 3 | Disinfection Byproducts |
| New Rochelle | 6,035 | 84 | 16 | Bromate, E. coli, Fecal Coliform +1 more |
| Avon | 6,000 | 11 | 5 | TTHM |
| Waterport | 6,000 | 41 | 1 | Chlorine |
| Bath | 5,933 | 556 | 2 | Chlorine Dioxide |
| Albion | 5,918 | 0 | 0 | |
| Lake Placid | 5,906 | 13 | 3 | Chlorine |
| Owego | 5,872 | 450 | 2 | Disinfection Byproducts, Stage 2 DBP |
| Elmsford | 5,861 | 306 | 6 | Contaminant 1028, Contaminant 1032, E. coli |
| Hilton | 5,856 | 0 | 0 | |
| Sanborn | 5,839 | 2 | 1 | Stage 2 DBP |
| Salamanca | 5,815 | 180 | 0 | |
| Lyons | 5,800 | 3 | 3 | TTHM |
| Mayville | 5,760 | 612 | 50 | Contaminant 2214, E. coli, Stage 2 DBP +2 more |
| Waverly | 5,649 | 78 | 0 | |
| Wallkill | 5,554 | 260 | 3 | Fecal Coliform, Mercury |
| Tupper Lake | 5,500 | 127 | 123 | Contaminant 1028, Fecal Coliform, TTHM +1 more |
| Saranac Lake | 5,435 | 7 | 4 | Contaminant 2806, Fecal Coliform, Mercury |
| Clifton Springs | 5,374 | 47 | 29 | Stage 2 DBP, TTHM |
| Harriman | 5,325 | 75 | 23 | Contaminant 1017, Contaminant 1032, Contaminant 2805 +2 more |
| Mechanicville | 5,230 | 95 | 21 | E. coli, Selenium, TTHM +1 more |
| Armonk | 5,182 | 59 | 31 | Contaminant 1032, Contaminant 2805, Contaminant 2806 |
| Cobleskill | 5,178 | 36 | 35 | E. coli, Fecal Coliform, TTHM |
| Highland | 5,157 | 244 | 8 | E. coli, Stage 2 DBP, TTHM |
| Carthage | 5,090 | 78 | 77 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Hoosick Falls | 5,025 | 12 | 2 | Contaminant 1028 |
| Frankfort | 4,958 | 753 | 18 | Chlorine, Contaminant 1017, Contaminant 1028 +1 more |
| Port Henry | 4,931 | 23 | 8 | Mercury, Total Haloacetic Acids (HAA5) |
| Holley | 4,888 | 31 | 0 | |
| Stillwater | 4,880 | 42 | 8 | Chlorine, Contaminant 1022, Disinfection Byproducts +2 more |
| Fort Edward | 4,880 | 38 | 2 | E. coli |
| Cape Vincent | 4,870 | 0 | 0 | |
| Allegany | 4,750 | 243 | 0 | |
| Waterville | 4,742 | 4 | 0 | |
| Old Westbury | 4,700 | 3 | 0 | |
| Phelps | 4,693 | 21 | 0 | |
| Lowville | 4,650 | 54 | 52 | Contaminant 2476, TTHM, Total Haloacetic Acids (HAA5) |
| Little Falls | 4,605 | 7 | 1 | Fecal Coliform |
| Gouverneur | 4,593 | 12 | 0 | |
| Blooming Grove | 4,589 | 535 | 85 | Contaminant 1017, Contaminant 1028, Contaminant 1032 +1 more |
| Castleton | 4,572 | 21 | 3 | Contaminant 1013, E. coli, Stage 2 DBP |
| Village of Menands | 4,500 | 3 | 1 | Chlorine |
| Ravena | 4,500 | 27 | 7 | Total Haloacetic Acids (HAA5) |
| Ocean Beach | 4,500 | 83 | 3 | Contaminant 1905 |
| Port Ewen | 4,500 | 6 | 5 | TTHM |
| Springville | 4,266 | 130 | 0 | |
| Cold Spring | 4,259 | 8 | 2 | Fecal Coliform, Stage 2 DBP |
| Walworth | 4,220 | 17 | 7 | Chlorine Dioxide |
| Angola | 4,210 | 27 | 2 | Chlorine, Stage 2 DBP |
| Cambridge | 4,181 | 393 | 4 | Chlorine, Contaminant 1028 |
| Cazenovia | 4,130 | 37 | 13 | Barium, Contaminant 1028 |
| Gasport | 4,117 | 0 | 0 | |
| Hamilton | 4,107 | 78 | 0 | |
| Delhi | 4,038 | 683 | 1 | Stage 2 DBP |
| Warsaw | 3,990 | 13 | 1 | Bromate |
| South Glens Falls | 3,900 | 53 | 3 | Fecal Coliform |
| Westfield | 3,890 | 95 | 0 | |
| Collins | 3,842 | 287 | 12 | Chlorine, Contaminant 1028, Fecal Coliform +1 more |
| Mount Morris | 3,828 | 9 | 6 | E. coli, TTHM, Total Haloacetic Acids (HAA5) |
| Perry | 3,823 | 49 | 1 | TTHM |
| Athens | 3,815 | 63 | 32 | Stage 2 DBP, TTHM, Total Haloacetic Acids (HAA5) |
| Sidney | 3,800 | 239 | 2 | Contaminant 1032 |
| Ticonderoga | 3,700 | 1 | 1 | Fecal Coliform |
| Melrose | 3,675 | 35 | 4 | TTHM |
| Warrensburg | 3,600 | 97 | 1 | Chlorine |
| Weedsport | 3,587 | 17 | 14 | TTHM |
| Bear Mountain | 3,564 | 86 | 4 | E. coli, Total Haloacetic Acids (HAA5) |
| Mohawk | 3,524 | 111 | 0 | |
| Upton | 3,500 | 2 | 0 | |
| Orchard Park | 3,450 | 1,037 | 19 | Contaminant 2210, Contaminant 2216 |
| Gorham | 3,420 | 18 | 0 | |
| Port Crane | 3,394 | 28 | 0 | |
| Sandy Creek | 3,392 | 32 | 1 | Stage 2 DBP |
| Greenwood Lake | 3,383 | 26 | 8 | Contaminant 2805, Contaminant 2806, TTHM |
| Akron | 3,348 | 16 | 4 | Contaminant 1032, TTHM |
| Barker | 3,300 | 0 | 0 | |
| Stamford | 3,259 | 310 | 18 | Cadmium, Contaminant 2805, Contaminant 2806 +1 more |
| Granville | 3,250 | 29 | 12 | Contaminant 1022, Disinfection Byproducts, Fecal Coliform |
| Milton | 3,248 | 15 | 0 | |
| Lagrangeville | 3,212 | 929 | 28 | Contaminant 2805, Contaminant 2806, Disinfection Byproducts +1 more |
| Otisville | 3,207 | 103 | 1 | Disinfection Byproducts |
| Hurley | 3,205 | 7 | 0 | |
| Black River | 3,190 | 1 | 0 | |
| Durhamville | 3,189 | 44 | 8 | TTHM, Total Haloacetic Acids (HAA5) |
| Walton | 3,175 | 270 | 0 | |
| Madison | 3,160 | 35 | 2 | Disinfection Byproducts, Fecal Coliform |
| Lee Center | 3,150 | 1 | 0 | |
| Maybrook | 3,150 | 221 | 0 | |
| Conklin | 3,144 | 1 | 1 | Disinfection Byproducts |
| Sherrill | 3,142 | 0 | 0 | |
| Dryden | 3,114 | 78 | 11 | Barium, E. coli |
| Voorheesville | 3,100 | 120 | 0 | |
| Corinth | 3,099 | 236 | 6 | Chlorine, Fecal Coliform, Mercury |
| Champlain | 3,097 | 19 | 0 | |
| Lake George | 3,093 | 202 | 8 | Chlorine, Contaminant 1017, Fecal Coliform +1 more |
| Northport | 3,088 | 296 | 0 | |
| Brocton | 3,086 | 4 | 0 | |
| Arcade | 3,041 | 11 | 0 | |
| Lansing | 3,000 | 0 | 0 | |
| Branchport | 3,000 | 5 | 0 | |
| Gowanda | 2,920 | 35 | 7 | Cadmium, Chlorine, Contaminant 2920 +1 more |
| Village of Green Island | 2,900 | 18 | 12 | Chlorine, Fecal Coliform |
| Florida | 2,884 | 89 | 85 | Contaminant 2920, Disinfection Byproducts, E. coli +2 more |
| Oakfield | 2,879 | 15 | 8 | TTHM |
| Stormville | 2,851 | 5 | 1 | Fecal Coliform |
| Lake Luzerne | 2,845 | 5 | 0 | |
| Alden | 2,841 | 33 | 1 | Disinfection Byproducts |
| Chatham | 2,837 | 34 | 2 | Chlorine, Disinfection Byproducts |
| Rushville | 2,801 | 26 | 5 | TTHM |
| Camden | 2,800 | 5 | 1 | Fecal Coliform |
| Whitehall | 2,800 | 108 | 20 | Fecal Coliform, Mercury, TTHM |
| Cooperstown | 2,795 | 123 | 1 | Disinfection Byproducts |
| Geneseo | 2,792 | 2 | 0 | |
| Sauquoit | 2,777 | 35 | 1 | Fecal Coliform |
| Schroon Lake | 2,750 | 4 | 2 | Mercury |
| Clyde | 2,719 | 22 | 2 | Stage 2 DBP |
| York | 2,700 | 3 | 3 | TTHM |
| Clinton | 2,672 | 1 | 0 | |
| Valatie | 2,665 | 238 | 4 | Contaminant 2806, Disinfection Byproducts, Stage 2 DBP |
| Woodridge | 2,652 | 310 | 0 | |
| Cottekill | 2,626 | 26 | 2 | TTHM |
| Stanley | 2,625 | 3 | 0 | |
| Newfield | 2,613 | 36 | 2 | Stage 2 DBP |
| Belmont | 2,600 | 109 | 0 | |
| Kirkwood | 2,600 | 0 | 0 | |
| Frewsburg | 2,600 | 5 | 0 | |
| Mexico | 2,600 | 9 | 0 | |
| Napanoch | 2,578 | 58 | 0 | |
| Groton | 2,567 | 25 | 0 | |
| East Williston | 2,556 | 1 | 0 | |
| Livingston Manor | 2,554 | 10 | 3 | Chlorine, E. coli, Stage 2 DBP |
| Greene | 2,552 | 54 | 0 | |
| Woodstock | 2,522 | 328 | 1 | Disinfection Byproducts |
| Bloomfield | 2,510 | 67 | 1 | Fecal Coliform |
| Keeseville | 2,504 | 34 | 14 | Chlorine, Disinfection Byproducts, E. coli +3 more |
| Clarendon | 2,482 | 4 | 0 | |
| Alexandria Bay | 2,460 | 6 | 4 | TTHM |
| Pawling | 2,400 | 1,303 | 16 | Contaminant 1028, Disinfection Byproducts, Fecal Coliform +2 more |
| Ray Brook | 2,400 | 44 | 1 | Total Haloacetic Acids (HAA5) |
| Rock Hill | 2,400 | 25 | 0 | |
| Patterson | 2,391 | 45 | 37 | Contaminant 1017, Contaminant 1028 |
| Slingerlands | 2,386 | 95 | 2 | Selenium, Total Haloacetic Acids (HAA5) |
| Watkins Glen | 2,350 | 24 | 20 | E. coli, TTHM |
| Clayton | 2,325 | 10 | 9 | Mercury, TTHM, Total Haloacetic Acids (HAA5) |
| Dolgeville | 2,316 | 179 | 17 | Fecal Coliform, Total Haloacetic Acids (HAA5) |
| Ausable Forks | 2,309 | 24 | 6 | Chlorine, Fecal Coliform, Stage 2 DBP |
| Canajoharie | 2,300 | 12 | 0 | |
| Boonville | 2,300 | 25 | 0 | |
| Norfolk | 2,300 | 14 | 1 | Fecal Coliform |
| Bayshore | 2,300 | 11 | 1 | Disinfection Byproducts |
| Trumansburg | 2,300 | 10 | 1 | Stage 2 DBP |
| Oxford | 2,282 | 6 | 0 | |
| Fort Plain | 2,273 | 109 | 0 | |
| Richmondville | 2,263 | 20 | 8 | Disinfection Byproducts, TTHM |
| Phoenix | 2,223 | 100 | 4 | Chlorine, Fecal Coliform, Stage 2 DBP |
| Caledonia | 2,201 | 2 | 1 | Fecal Coliform |
| Schuylerville | 2,200 | 14 | 3 | Contaminant 1017, Contaminant 1032, Fecal Coliform |
| Morrisville | 2,199 | 10 | 0 | |
| Northville | 2,180 | 6 | 1 | Fecal Coliform |
| Old Forge | 2,134 | 410 | 1 | Disinfection Byproducts |
| Victory Mills | 2,114 | 116 | 26 | Chlorine, Contaminant 1028, Contaminant 1032 +1 more |
| Canisteo | 2,100 | 188 | 0 | |
| Altamont | 2,080 | 68 | 7 | Contaminant 1032 |
| Deposit | 2,080 | 2 | 0 | |
| Farmington Hills | 2,079 | 15 | 2 | Contaminant 1920 |
| Moravia | 2,070 | 11 | 1 | Stage 2 DBP |
| Delevan | 2,060 | 15 | 2 | Contaminant 2920, Fecal Coliform |
| Greenport | 2,050 | 4 | 0 | |
| Windham | 2,023 | 226 | 13 | Barium |
| Speculator | 2,008 | 2 | 1 | Fecal Coliform |
| Caneadea | 2,000 | 3 | 0 | |
| Union Springs | 2,000 | 0 | 0 | |
| Millerton | 2,000 | 6 | 0 | |
| Adams | 2,000 | 5 | 0 | |
| Hannibal | 2,000 | 2 | 0 | |
| Charlton | 2,000 | 10 | 1 | Stage 2 DBP |
| Greenwich | 2,000 | 6 | 2 | Contaminant 1032, Fecal Coliform |
| Wurtsboro | 1,991 | 18 | 2 | E. coli |
| North Rose | 1,975 | 12 | 0 | |
| Carmel | 1,961 | 238 | 93 | Chlorine, Contaminant 1017, Contaminant 1028 +5 more |
| Wayland | 1,915 | 24 | 0 | |
| Slate Hill | 1,911 | 462 | 66 | Contaminant 1017, Contaminant 1028, Disinfection Byproducts +2 more |
| New Berlin | 1,900 | 10 | 0 | |
| Addison | 1,892 | 25 | 2 | Contaminant 1028, E. coli |
| Sherburne | 1,878 | 80 | 15 | Chlorine, Chlorine Dioxide, Fecal Coliform +1 more |
| Franklinville | 1,860 | 123 | 0 | |
| Dexter | 1,840 | 29 | 25 | TTHM, Total Haloacetic Acids (HAA5) |
| Cuba | 1,800 | 90 | 4 | Disinfection Byproducts |
| Philadelphia | 1,800 | 1 | 1 | Fecal Coliform |
| Bolton Landing | 1,800 | 18 | 13 | Contaminant 1022, Fecal Coliform, Mercury |
| Hadley | 1,797 | 38 | 0 | |
| Dundee | 1,765 | 19 | 0 | |
| Hopewell Junction | 1,755 | 235 | 23 | Contaminant 1028, HAA5, Total Organic Carbon |
| Philmont | 1,750 | 104 | 0 | |
| Randolph | 1,738 | 1 | 1 | Fecal Coliform |
| West Carthage | 1,734 | 39 | 39 | Fecal Coliform, Total Haloacetic Acids (HAA5) |
| Holland | 1,721 | 153 | 6 | Contaminant 1028, Contaminant 1032 |
| Ellicottville | 1,715 | 59 | 0 | |
| St. Johnsville | 1,700 | 19 | 0 | |
| Lyndonville | 1,700 | 0 | 0 | |
| North Salem | 1,694 | 278 | 101 | Chlorine Dioxide, Contaminant 1017, Contaminant 2805 +3 more |
| Bainbridge | 1,685 | 12 | 1 | Stage 2 DBP |
| Norwood | 1,685 | 0 | 0 | |
| Montour Falls | 1,635 | 17 | 0 | |
| Castile | 1,635 | 46 | 15 | TTHM |
| Nunda | 1,600 | 11 | 0 | |
| Plandome | 1,600 | 3 | 0 | |
| Willsboro | 1,571 | 10 | 9 | Mercury, Total Haloacetic Acids (HAA5) |
| Elbrige | 1,519 | 23 | 18 | Fecal Coliform |
| Broadalbin | 1,515 | 170 | 0 | |
| Cairo | 1,513 | 219 | 3 | Chlorine, Fecal Coliform, Stage 2 DBP |
| Ellisburg | 1,500 | 0 | 0 | |
| Sonyea | 1,500 | 9 | 0 | |
| Sodus Point | 1,500 | 12 | 0 | |
| Norh Collins | 1,496 | 8 | 1 | Disinfection Byproducts |
| Brooklyn | 1,491 | 506 | 55 | Chlorine, Contaminant 2805, Contaminant 2806 +2 more |
| North Chili | 1,473 | 590 | 30 | Contaminant 1028, Contaminant 1032, E. coli +1 more |
| Cleveland | 1,463 | 13 | 1 | Stage 2 DBP |
| Kinderhook | 1,460 | 51 | 3 | E. coli, Stage 2 DBP |
| Roxbury | 1,441 | 257 | 0 | |
| Canaseraga | 1,440 | 1,396 | 2 | Fecal Coliform, Stage 2 DBP |
| Lafargeville | 1,440 | 3 | 0 | |
| Port Byron | 1,426 | 3 | 2 | TTHM |
| Whitney Point | 1,415 | 2 | 2 | Disinfection Byproducts, Fecal Coliform |
| Jordan | 1,400 | 21 | 19 | E. coli, Fecal Coliform |
| Seaview | 1,400 | 5 | 0 | |
| Amenia | 1,392 | 9 | 0 | |
| Friendship | 1,380 | 86 | 0 | |
| Nassau | 1,353 | 38 | 1 | Chlorine |
| Hancock | 1,342 | 314 | 7 | Chlorine, Fecal Coliform, Gross Alpha |
| Burdett | 1,340 | 113 | 1 | Fecal Coliform |
| Little Valley | 1,338 | 203 | 0 | |
| Chestertown | 1,330 | 526 | 31 | Chlorine, Contaminant 1022, Fecal Coliform +1 more |
| Unadilla | 1,329 | 568 | 4 | Chlorine |
| Morrisonville | 1,328 | 70 | 2 | Chlorine, Mercury |
| Westmoreland | 1,325 | 87 | 2 | Fecal Coliform |
| Mcgraw | 1,306 | 4 | 0 | |
| Wingdale | 1,304 | 2 | 0 | |
| Tivoli | 1,303 | 4 | 0 | |
| Ripley | 1,300 | 8 | 0 | |
| Indian Lake | 1,300 | 32 | 31 | Chlorine, Contaminant 1022, Fecal Coliform +3 more |
| Hillburn | 1,282 | 10 | 5 | Contaminant 2806, Disinfection Byproducts, Gross Alpha +1 more |
| Naples | 1,280 | 104 | 8 | Chlorine, Disinfection Byproducts, Fecal Coliform +1 more |
| Arkport | 1,274 | 10 | 0 | |
| Chateaugay | 1,260 | 18 | 1 | Contaminant 1022 |
| Theresa | 1,253 | 0 | 0 | |
| Star Lake | 1,250 | 11 | 0 | |
| Hunter | 1,230 | 171 | 3 | TTHM |
| Brownville | 1,200 | 0 | 0 | |
| Copenhagen | 1,200 | 58 | 0 | |
| Richfield Springs | 1,200 | 15 | 10 | Chlorine, Fecal Coliform, TTHM +1 more |
| Cattaraugus | 1,185 | 15 | 4 | Contaminant 2920, E. coli, Fecal Coliform |
| Copake | 1,185 | 108 | 2 | Chlorine, Stage 2 DBP |
| Westport | 1,163 | 191 | 7 | Contaminant 1032, Disinfection Byproducts, Fecal Coliform |
| Hensonville | 1,160 | 384 | 60 | Barium |
| Veronon | 1,155 | 8 | 0 | |
| Clymer | 1,150 | 13 | 0 | |
| Beach Lake | 1,150 | 15 | 0 | |
| Orangeburg | 1,144 | 4 | 0 | |
| Greenville | 1,130 | 1,215 | 3 | Chlorine, Stage 2 DBP |
| Andover | 1,130 | 473 | 0 | |
| Dover Plains | 1,125 | 334 | 3 | E. coli, Stage 2 DBP |
| Fonda | 1,120 | 58 | 25 | Contaminant 1920, E. coli, TTHM |
| Marathon | 1,107 | 2 | 0 | |
| Schaghticoke | 1,102 | 7 | 0 | |
| Woodbury | 1,102 | 317 | 0 | |
| Paul Smiths | 1,100 | 11 | 3 | Chlorine, Contaminant 1022, Mercury |
| Tuxedo Park | 1,100 | 10 | 2 | Contaminant 2920, Disinfection Byproducts |
| North Creek | 1,100 | 6 | 0 | |
| Woodbourne | 1,097 | 10 | 0 | |
| Chaumont | 1,095 | 2 | 0 | |
| Otego | 1,086 | 124 | 2 | Chlorine, Stage 2 DBP |
| Yorkshire | 1,084 | 1 | 1 | Barium |
| Portville | 1,079 | 31 | 0 | |
| Hemlock | 1,067 | 0 | 0 | |
| Edmeston | 1,055 | 140 | 0 | |
| Windsor | 1,051 | 0 | 0 | |
| Margaretville | 1,048 | 738 | 1 | Fecal Coliform |
| Shandaken | 1,003 | 47 | 16 | Disinfection Byproducts, Fecal Coliform, Stage 2 DBP |
| Fair Haven | 1,001 | 8 | 0 | |
| Cayuga | 1,000 | 2 | 0 | |
| Pleasant Valley | 1,000 | 18 | 2 | Selenium |
| Jay | 1,000 | 65 | 0 | |
| Adams Center | 1,000 | 2 | 0 | |
| Glenwood Landing | 1,000 | 0 | 0 | |
| West Winfield | 992 | 651 | 0 | |
| Ovid | 990 | 125 | 10 | TTHM |
| Lafayette | 980 | 41 | 0 | |
| Bloomingdale | 980 | 2 | 1 | Chlorine |
| Crown Point | 980 | 1 | 0 | |
| Wilmington | 980 | 2 | 2 | Mercury |
| St. Regis Falls | 980 | 36 | 1 | Fecal Coliform |
| Avoca | 970 | 31 | 0 | |
| Keene | 960 | 11 | 6 | Contaminant 1022, Fecal Coliform, Mercury |
| Evans Mills | 959 | 5 | 2 | Contaminant 1017 |
| Angelica | 950 | 9 | 1 | Fecal Coliform |
| Savannah | 950 | 1 | 1 | Fecal Coliform |
| Candor | 945 | 12 | 0 | |
| Waddington | 944 | 24 | 0 | |
| Tully | 930 | 0 | 0 | |
| Schoharie | 922 | 7 | 2 | Disinfection Byproducts, Fecal Coliform |
| Bloomingburg | 920 | 8 | 2 | Chlorine, E. coli |
| Salem | 915 | 13 | 1 | Mercury |
| Katonah | 910 | 66 | 32 | Contaminant 2805, Contaminant 2806 |
| Prattsburgh | 901 | 35 | 1 | Stage 2 DBP |
| Genoa | 900 | 0 | 0 | |
| Fort Covington | 900 | 0 | 0 | |
| Antwerp | 900 | 8 | 2 | Contaminant 4020, Contaminant 4030 |
| Croghan | 900 | 1 | 1 | Fecal Coliform |
| Palatine Bridge | 900 | 116 | 0 | |
| Princetown | 900 | 17 | 4 | Contaminant 1022, Disinfection Byproducts |
| Worcester | 899 | 116 | 1 | Fecal Coliform |
| Calverton | 897 | 123 | 2 | Contaminant 1028, Contaminant 1905 |
| Newark Valley | 896 | 0 | 0 | |
| Belfast | 890 | 100 | 37 | Barium |
| Long Lake | 890 | 65 | 5 | Contaminant 1022, Fecal Coliform, Mercury |
| Forestport | 887 | 13 | 0 | |
| Pine Plains | 880 | 3 | 0 | |
| Kiamesha Lake | 879 | 15 | 2 | Contaminant 1905 |
| Dresden | 873 | 21 | 4 | TTHM |
| South Salem | 866 | 15 | 3 | Contaminant 2805, Gross Alpha |
| Downsville | 860 | 128 | 5 | Chlorine, Disinfection Byproducts, Fecal Coliform +1 more |
| Elizabethtown | 860 | 44 | 3 | Fecal Coliform |
| Cohocton | 854 | 9 | 1 | Selenium |
| Lyons Falls | 850 | 8 | 1 | Fecal Coliform |
| Elbridge | 850 | 79 | 7 | Contaminant 2805, Contaminant 2806 |
| New Hampton | 850 | 9 | 0 | |
| Colton | 850 | 1 | 0 | |
| Hortonville | 850 | 10 | 0 | |
| Silver Springs | 850 | 1 | 0 | |
| Newport | 840 | 8 | 1 | Fecal Coliform |
| Afton | 838 | 2 | 0 | |
| Gerry | 830 | 212 | 0 | |
| Heuvelton | 830 | 3 | 0 | |
| Cassadaga | 822 | 19 | 0 | |
| Port Leyden | 820 | 46 | 0 | |
| Mayfield | 817 | 11 | 0 | |
| Perrysburg | 815 | 175 | 1 | Stage 2 DBP |
| Odessa | 810 | 29 | 0 | |
| Cato | 801 | 7 | 0 | |
| Savona | 801 | 7 | 0 | |
| Minerva | 800 | 4 | 0 | |
| Madrid | 800 | 4 | 0 | |
| Loch Sheldrake | 800 | 28 | 2 | Contaminant 1905 |
| Jeffersonville | 799 | 75 | 1 | Fecal Coliform |
| Alexander | 785 | 16 | 10 | TTHM, Total Haloacetic Acids (HAA5) |
| Beaver Falls | 782 | 0 | 0 | |
| Campbell | 780 | 8 | 0 | |
| Sinclairville | 772 | 633 | 0 | |
| Oriskany Falls | 760 | 4 | 0 | |
| Poestenkill | 752 | 25 | 4 | TTHM |
| Round Lake | 750 | 11 | 6 | TTHM |
| Morris | 744 | 97 | 0 | |
| Fultonville | 740 | 308 | 50 | Contaminant 1028, Contaminant 1920, Stage 2 DBP |
| Nichols | 725 | 1 | 0 | |
| Pittsford | 722 | 108 | 5 | Bromate, Chlorine, Fecal Coliform +1 more |
| Chazy | 720 | 21 | 2 | Stage 2 DBP, TTHM |
| Argyle | 720 | 93 | 4 | Chlorine, Contaminant 1022 |
| Elba | 706 | 11 | 0 | |
| Machias | 700 | 164 | 2 | Fecal Coliform, Selenium |
| Hobart | 700 | 73 | 0 | |
| Henderson | 700 | 20 | 8 | TTHM |
| Berlin | 700 | 17 | 0 | |
| Fillmore | 695 | 81 | 0 | |
| Claryville | 688 | 81 | 0 | |
| Mt. Kisco | 680 | 91 | 79 | Contaminant 2805, Contaminant 2806 |
| Sherman | 677 | 103 | 0 | |
| Hammondsport | 677 | 3 | 0 | |
| South Dayton | 661 | 14 | 7 | Contaminant 1028, Contaminant 1032 |
| Great Valley | 655 | 5 | 0 | |
| Guilford | 650 | 9 | 0 | |
| Altona | 650 | 3 | 3 | Contaminant 1022 |
| Cincinnatus | 650 | 631 | 0 | |
| Interlaken | 650 | 7 | 0 | |
| Taberg | 640 | 14 | 0 | |
| Leicester | 638 | 17 | 0 | |
| Kent Lakes | 636 | 1 | 1 | Disinfection Byproducts |
| Bethel | 630 | 100 | 90 | Contaminant 1017, Contaminant 2805, Contaminant 2806 |
| Tannersville | 629 | 37 | 1 | Barium |
| Cherry Valley | 620 | 8 | 0 | |
| Remsen | 618 | 9 | 0 | |
| Unionville | 615 | 85 | 1 | Disinfection Byproducts |
| Martinsburg | 610 | 15 | 13 | Mercury, TTHM |
| Saranac | 609 | 50 | 3 | Fecal Coliform, Mercury |
| Locke | 600 | 1 | 0 | |
| Davenport Center | 600 | 467 | 5 | E. coli, Fecal Coliform |
| Harris | 600 | 8 | 0 | |
| Liverpool | 598 | 125 | 9 | Fecal Coliform, Stage 2 DBP, TTHM +1 more |
| Romulus | 596 | 10 | 0 | |
| Campbell Hall | 585 | 28 | 0 | |
| Willard | 585 | 25 | 16 | TTHM |
| Wellsburg | 580 | 8 | 0 | |
| Millbrook | 580 | 16 | 1 | Fecal Coliform |
| Putnam Valley | 573 | 4 | 2 | Contaminant 1017 |
| Freehold | 570 | 355 | 7 | Contaminant 2210, Contaminant 2214 |
| Fort Ann | 570 | 28 | 1 | Stage 2 DBP |
| Central Bridge | 560 | 90 | 86 | Chlorine, Contaminant 1032, Fecal Coliform +2 more |
| Deruyter | 558 | 14 | 0 | |
| Middleville | 550 | 173 | 2 | E. coli |
| Earlville | 545 | 1 | 0 | |
| Stony Point | 545 | 103 | 20 | Contaminant 2805, Contaminant 2806, Disinfection Byproducts |
| Nelliston | 535 | 7 | 1 | Chlorine |
| Van Etten | 532 | 1 | 0 | |
| Matamoras | 530 | 194 | 14 | Contaminant 1028, Contaminant 1032, Disinfection Byproducts |
| Delanson | 530 | 97 | 64 | TTHM, Total Haloacetic Acids (HAA5) |
| Schenevus | 524 | 66 | 0 | |
| Tillson | 522 | 260 | 1 | Stage 2 DBP |
| Farnham | 513 | 15 | 1 | E. coli |
| Poland | 508 | 5 | 0 | |
| Sharon Springs | 504 | 14 | 5 | Total Haloacetic Acids (HAA5) |
| Wassaic | 500 | 6 | 0 | |
| Glen Park | 500 | 1 | 0 | |
| Lincolndale | 500 | 271 | 0 | |
| Lisbon | 499 | 5 | 0 | |
| Hermon | 492 | 0 | 0 | |
| Dekalb Junction | 492 | 1 | 0 | |
| Montezuma | 490 | 6 | 3 | TTHM |
| Pulteney | 490 | 12 | 6 | TTHM |
| Wyoming | 490 | 6 | 1 | Chlorine |
| Colden | 485 | 212 | 1 | Chlorine |
| Atlanta | 485 | 2 | 0 | |
| Franklin | 481 | 16 | 0 | |
| Almond | 480 | 140 | 0 | |
| Gilbertsville | 477 | 18 | 0 | |
| Shelter Island Heights | 477 | 125 | 5 | Contaminant 1017, Disinfection Byproducts |
| Skokie | 476 | 659 | 12 | Contaminant 1028, Contaminant 2806, Disinfection Byproducts +1 more |
| Whitesville | 475 | 258 | 0 | |
| Garrison | 475 | 24 | 20 | Contaminant 1028, Contaminant 1032 |
| Hague | 470 | 14 | 3 | Contaminant 1022, Fecal Coliform |
| Edwards | 465 | 0 | 0 | |
| Limestone | 459 | 11 | 0 | |
| Pittsfield | 455 | 234 | 2 | Chlorine, Lead |
| Modena | 452 | 2 | 0 | |
| Wells | 450 | 2 | 0 | |
| Mannsville | 450 | 1 | 0 | |
| Deansboro | 450 | 1 | 1 | Fecal Coliform |
| Nedrow | 450 | 0 | 0 | |
| Cornwall | 450 | 2 | 0 | |
| Parishville | 450 | 2 | 0 | |
| Clayville | 445 | 8 | 0 | |
| Barneveld | 444 | 15 | 1 | Fecal Coliform |
| Cherry Creek | 440 | 0 | 0 | |
| Rocky River | 432 | 0 | 0 | |
| Laurens | 430 | 104 | 0 | |
| Millport | 429 | 35 | 0 | |
| Lewis | 428 | 13 | 9 | Contaminant 1022, Fecal Coliform, Mercury |
| Freeville | 425 | 32 | 0 | |
| Canaan | 420 | 41 | 0 | |
| Deferiet | 420 | 7 | 0 | |
| Hartwick | 416 | 4 | 0 | |
| West Valley | 410 | 1 | 1 | Contaminant 2920 |
| Milford | 407 | 28 | 1 | Selenium |
| New York | 405 | 21 | 3 | Contaminant 2263, Contaminant 2805 |
| Aurora | 400 | 13 | 12 | TTHM |
| Oak Brook | 400 | 4 | 1 | Chlorine |
| Trumasnburg | 400 | 12 | 12 | TTHM |
| Morristown | 395 | 8 | 1 | Stage 2 DBP |
| Hinsdale | 383 | 144 | 0 | |
| Kerhonkson | 381 | 321 | 2 | Chlorine, Fecal Coliform |
| North Bangor | 375 | 17 | 0 | |
| Prattsville | 375 | 178 | 3 | Contaminant 2214 |
| Pike | 375 | 8 | 1 | Chlorine |
| Jackson | 372 | 9 | 0 | |
| Sloatsburg | 367 | 77 | 4 | Disinfection Byproducts, Gross Alpha |
| Beaver Dams | 365 | 5 | 0 | |
| Goldens Bridge | 356 | 5 | 5 | Contaminant 1028, Contaminant 1032 |
| Spencer | 355 | 27 | 0 | |
| Fleischmanns | 352 | 13 | 10 | Barium |
| Bloomville | 350 | 0 | 0 | |
| Essex | 350 | 41 | 27 | Chlorine, Mercury, TTHM |
| Turin | 350 | 3 | 1 | Disinfection Byproducts |
| Strykersville | 350 | 59 | 1 | Chlorine |
| Edison | 342 | 0 | 0 | |
| Orlando | 335 | 56 | 0 | |
| Holland Patent | 330 | 3 | 0 | |
| Bridgewater | 330 | 23 | 0 | |
| Westerlo | 325 | 66 | 1 | Stage 2 DBP |
| Rifton | 325 | 3 | 0 | |
| Ulster Park | 325 | 1 | 0 | |
| Castorland | 320 | 28 | 0 | |
| Esopus | 320 | 66 | 1 | Stage 2 DBP |
| Hamden | 311 | 55 | 3 | Chlorine, Fecal Coliform |
| Constableville | 310 | 29 | 0 | |
| South Otselic | 300 | 2 | 0 | |
| Georgetown | 300 | 8 | 0 | |
| Jefferson | 300 | 3 | 1 | Disinfection Byproducts |
| Fishers Island | 300 | 81 | 8 | Contaminant 1032, Contaminant 1905 |
| Tuckahoe | 295 | 4 | 0 | |
| Croton Falls | 294 | 5 | 0 | |
| Brasher Falls | 280 | 17 | 0 | |
| Burke | 273 | 7 | 0 | |
| North Java | 270 | 1 | 0 | |
| West Danby | 265 | 6 | 0 | |
| Andes | 260 | 12 | 0 | |
| Moira | 260 | 59 | 0 | |
| Highland Mills | 260 | 3 | 1 | Disinfection Byproducts |
| Greenwood | 260 | 12 | 0 | |
| West Coxsackie | 251 | 12 | 0 | |
| Newcomb | 250 | 19 | 17 | Fecal Coliform, TTHM, Total Haloacetic Acids (HAA5) |
| Littleton | 250 | 473 | 2 | Chlorine |
| Elka Park | 250 | 6 | 0 | |
| Plattekill | 250 | 32 | 1 | Chlorine |
| Blauvelt | 250 | 12 | 0 | |
| Golden'S Bridge | 250 | 315 | 25 | Contaminant 2805, Contaminant 2806 |
| Bliss | 250 | 2 | 0 | |
| Parish | 245 | 35 | 1 | Chlorine |
| Piercefield | 244 | 27 | 0 | |
| Petersburgh | 240 | 20 | 0 | |
| Pomona | 240 | 20 | 0 | |
| Yorktown | 236 | 288 | 0 | |
| Poughquag | 235 | 4 | 3 | Total Organic Carbon |
| Monsey | 235 | 74 | 0 | |
| Averill Park | 230 | 2 | 0 | |
| Advance | 225 | 2 | 0 | |
| Crofton | 220 | 2 | 0 | |
| Conewango Valley | 217 | 2 | 0 | |
| Orwell | 216 | 94 | 3 | Chlorine, Fecal Coliform |
| Morgantown | 212 | 23 | 1 | Fecal Coliform |
| Smyrna | 211 | 3 | 0 | |
| Castleton On Hudson | 210 | 24 | 0 | |
| New Hartford | 210 | 79 | 0 | |
| Hyde Park | 208 | 199 | 17 | Contaminant 1017, Contaminant 1028, Contaminant 2805 +3 more |
| Troupsburg | 206 | 40 | 1 | Fecal Coliform |
| Lakewood | 203 | 237 | 1 | Stage 2 DBP |
| Spring Valley | 203 | 14 | 1 | Chlorine |
| Medusa | 200 | 40 | 37 | Chlorine, E. coli, TTHM +1 more |
| Mellenville | 200 | 16 | 1 | Stage 2 DBP |
| Chaffee | 200 | 102 | 2 | Fecal Coliform, Stage 2 DBP |
| Ashland | 200 | 63 | 0 | |
| Costa Mesa | 200 | 62 | 4 | Contaminant 2805 |
| West Oneonta | 200 | 7 | 0 | |
| Wanakena | 200 | 2 | 0 | |
| Burbank | 200 | 8 | 0 | |
| Sayre | 200 | 3 | 0 | |
| South Cairo | 196 | 17 | 0 | |
| Neptune | 193 | 371 | 0 | |
| Adirondack | 190 | 2 | 0 | |
| New City | 188 | 48 | 4 | Chlorine, Contaminant 1028 |
| Holmes | 185 | 0 | 0 | |
| Flushing | 183 | 14 | 0 | |
| Rodman | 180 | 0 | 0 | |
| Cuddebackville | 180 | 55 | 0 | |
| Mongaup Valley | 177 | 5 | 0 | |
| Preble | 165 | 64 | 0 | |
| Treadwell | 164 | 152 | 0 | |
| Wacabuc | 156 | 17 | 7 | Chlorine Dioxide |
| Castle Creek | 152 | 60 | 3 | Stage 2 DBP |
| Fishs Eddy | 150 | 124 | 0 | |
| Killington | 150 | 22 | 0 | |
| Port Jefferson | 150 | 7 | 1 | Chlorine |
| Fairfield | 150 | 4 | 0 | |
| Ava | 148 | 45 | 1 | Fecal Coliform |
| Wellington | 147 | 12 | 1 | Contaminant 2806 |
| Lake Worth Beach | 146 | 30 | 1 | Stage 2 DBP |
| West Park | 145 | 60 | 3 | E. coli, Fecal Coliform, Stage 2 DBP |
| Bovina Center | 142 | 16 | 0 | |
| Maryland | 140 | 157 | 2 | Chlorine, Stage 2 DBP |
| Manhasset | 135 | 63 | 0 | |
| West Hurley | 135 | 7 | 0 | |
| Wappinger Falls | 131 | 252 | 2 | Stage 2 DBP |
| Sterling | 130 | 0 | 0 | |
| Longview | 126 | 23 | 2 | Chlorine, Fecal Coliform |
| Brookfield | 125 | 7 | 0 | |
| Dobbs Ferry | 125 | 0 | 0 | |
| Rock Tavern | 121 | 261 | 1 | Disinfection Byproducts |
| Bemus Point | 120 | 5 | 0 | |
| Erieville | 120 | 2 | 0 | |
| Westernville | 120 | 6 | 1 | Chlorine |
| Pennellville | 120 | 10 | 0 | |
| New Smyrna Beach | 120 | 5 | 1 | Contaminant 2805 |
| Bowmansville | 116 | 106 | 0 | |
| Peru | 116 | 134 | 1 | Mercury |
| Brainardsville | 115 | 9 | 1 | Contaminant 1022 |
| Selkirk | 112 | 728 | 1 | PFOA |
| Mt Freedom | 111 | 60 | 0 | |
| Berne | 110 | 86 | 0 | |
| East Chatham | 110 | 43 | 0 | |
| Standish | 110 | 3 | 0 | |
| Fort Johnson | 110 | 13 | 0 | |
| Dewittville | 108 | 1 | 0 | |
| Bellmore | 105 | 4 | 0 | |
| Greenfield Center | 102 | 35 | 0 | |
| Pine Valley | 101 | 20 | 0 | |
| Silvercreek | 100 | 5 | 0 | |
| Stow | 100 | 6 | 1 | Stage 2 DBP |
| Verbank | 100 | 1 | 0 | |
| Fayetteville | 100 | 11 | 1 | E. coli |
| Shelter Island | 100 | 4 | 2 | Contaminant 1032, Disinfection Byproducts |
Data Sources
Drinking water data from the EPA Safe Drinking Water Information System (SDWIS). Only active community water systems (CWS) serving 100+ people are included.