ST. HELENA, CITY OF
PWSID: CA2810004 · St. Helena, CA · Serves 5,386 people
According to EPA Safe Drinking Water Information System (SDWIS), ST. HELENA, CITY OF (PWSID CA2810004) in St. Helena, CA is listed as a CWS water system covering about 5,386 people. The same extract lists 27 health-based violation records spanning 2016-2023. Those 27 health-based rows for ST. HELENA, CITY OF cover contaminants such as Total Haloacetic Acids (HAA5), Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
ST. HELENA, CITY OF has 27 health-based violation records in this historical extract. Monitoring and reporting records are not included.
PlainEnviro's health-based SDWIS extract covers monitoring and reporting violations only -- it does not include unresolved enforcement actions in progress or corrective steps a utility has taken since the extract date. 2 distinct EPA contaminant codes appear in this system's record, including Total Haloacetic Acids (HAA5), Surface Water Treatment Rule. Recorded violations span 2016–2023. Day-to-day primacy enforcement for this system runs through the California drinking-water program, not EPA directly.
A historical health-based record does not necessarily describe current water quality or compliance. The most authoritative current source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the California state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- CA2810004
- System Type
- CWS
- Water Source
- Surface Water
- Location
- St. Helena, CA
- Population Served
- 5,386
- Health Violations
- Yes (27)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Total Haloacetic Acids (HAA5) | 25 | 25 |
| Surface Water Treatment Rule | 2 | 2 |
Violation History (27)
Frequently Asked Questions
What does EPA SDWIS list for ST. HELENA, CITY OF?
How many people does ST. HELENA, CITY OF serve?
What violations does ST. HELENA, CITY OF have?
What contaminants have been found in ST. HELENA, CITY OF water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest ST. HELENA, CITY OF on cumulative violation count (27) and EPA-reported population served (5,386). Violation-count peers include COVE WATERWORKS, OLA WATERWORKS, GREEN HILL-BROOKS CHAPEL WATER. Population peers include STANDARD DEDEAUX WATER ASSOCIATION, IRONWOOD, ROLLING CREEK UTILITY DISTRICT.
Similar violation count
Nearest cross-state community systems (500+ served) by SDWIS violations on record.
Similar population served
Nearest cross-state systems by EPA SDWIS population_served (same 500+ gate).
Nearby Water Systems
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About This Data
ST. HELENA, CITY OF (CA2810004) is drawn from EPA SDWIS. Nearby county systems in this extract include NAPA, CITY OF; AMERICAN CANYON, CITY OF; TOWN OF YOUNTVILLE; PACIFIC UNION COLLEGE. Health-based rows (27 MCL/TT) are historical registry state, not a current drinkability score.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.