Water Quality: Morgan Hill, CA
9 water systems • 468 people served
Multiple Health ViolationsWater Quality Summary
Morgan Hill is served by 9 public water systems with a combined service population of 468 people, and has 48 EPA Safe Drinking Water Act violations on record. Critically, 11 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Morgan Hill's violation count is roughly in line with the national average for California. Contaminants associated with violations include Contaminant 1094, E. coli, Gross Alpha, Selenium, Stage 2 DBP.
Contaminants Found
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.
Common source: Natural uranium and radium in geological formations
EPA limit: 15 pCi/L (excluding radon and uranium)
Hair loss, nail brittleness, and nervous system damage at elevated concentrations.
Common source: Natural geological deposits, mining discharges, oil refinery waste
EPA limit: 0.05 mg/L (50 ppb)
Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.
Common source: Chlorine disinfection reacting with natural organic matter in source water
EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L
Water Systems Serving Morgan Hill
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| GREEN MOUNTAIN WATER COMPANY | CA4300560 | Groundwater | 80 | 4 |
| HIDDEN ACRES TRAILER VILLA | CA4800564 | Groundwater | 80 | 5 |
| UVAS PINES RV PARK | CA4300999 | Groundwater | 65 | 0 |
| SULLIVAN MUTUAL WATER | CA4300571 | Groundwater | 53 | 8 |
| GREEN ACRES MUTUAL WATER | CA4300573 | Groundwater | 53 | 6 |
| FOOTHILL MUTUAL WATER COMPANY | CA4300630 | Groundwater | 36 | 22 |
| DEER HILL MUTUAL WATER CO | CA4300842 | Groundwater | 36 | 0 |
| RANCHO DE LOMAS MUTUAL WATER COMPANY | CA4300848 | Groundwater | 35 | 1 |
| ROCKWOOD ESTATES MUTUAL WATER COMPANY | CA4301013 | Groundwater | 30 | 2 |
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.
Other Cities in California
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.