Water Quality: Arroyo Grande, CA
13 water systems • 23,710 people served
Multiple Health Violations152
Total Violations
102
Health-Based Violations
13
Water Systems
23,710
Population Served
Water Quality Summary
Arroyo Grande has 102 health-based violations on record, meaning one or more contaminants were found above EPA-established safe levels. Contaminants involved: Arsenic, Barium, Selenium. In total, 152 violations are on record for 13 water systems serving 23,710 people.
Contaminants Found
Arsenic
Barium
Selenium
Water Systems Serving Arroyo Grande
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| CITY OF ARROYO GRANDE UTILITIES DIVISION | CA4010001 | Surface Water | 17,963 | 2 |
| WOODLANDS DEVELOPMENT | CA4010081 | Groundwater | 3,862 | 1 |
| MESA DUNES MOBILE HOME ESTATES | CA4000650 | Groundwater | 600 | 5 |
| WOODLAND PARK MUTUAL WATER CO | CA4000506 | Groundwater | 538 | 39 |
| CANYON CREST MUTUAL BENEFIT WC | CA4000230 | Surface Water | 133 | 0 |
| EDNA VALLEY RANCH EAST | CA4000202 | Groundwater | 132 | 6 |
| VARIAN RANCH MUTUAL WATER | CA4000765 | Groundwater | 106 | 1 |
| KEN MAR GARDENS | CA4000648 | Groundwater | 84 | 39 |
| LAGUNA NEGRA MUTUAL WATER CO. | CA4000705 | Groundwater | 80 | 9 |
| H2O, INC | CA4000741 | Groundwater | 70 | 3 |
| COUNTRY HILLS ESTATES | CA4000637 | Groundwater | 60 | 45 |
| RANCHO NIPOMO WATER COMPANY | CA4000771 | Groundwater | 44 | 2 |
| TERRA DE ORO WATER COMPANY | CA4000749 | Groundwater | 38 | 0 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.