PATTERSON, CA · Stanislaus County
PATTERSON, CITY OF Water System
Current status
No open violations on record as of July 4, 2026.
This system's next federally required Consumer Confidence Report is due July 1, 2027, under the EPA's revised reporting rule.
Data sourced from the EPA ECHO database (SDWA bulk download), last refreshed July 4, 2026. This is a record-keeping and public-information tool — it does not replace California’s official records. Always confirm current status with California before making decisions based on this information.
System facts
- System ID (PWSID)
- CA5010017
- System type
- Community Water System
- Population served
- 24,977
- Service connections
- 7,367
- Ownership
- local government
- Water source
- groundwater (wells)
Violation history
Notification, Public
—No contaminant on record
August 1, 1989 – August 31, 1989
Archived
Archived closed in EPA's records (typically due to age or a data correction)
| Period | Violation | Contaminant / rule | Health-based | Status |
|---|---|---|---|---|
| August 1, 1989 – August 31, 1989 | Notification, Public | — | — | Archived |
Archived closed in EPA's records (typically due to age or a data correction)
Enforcement actions
No enforcement actions on record for this system.
Contact
WILLETT, MIKE
209-895-8065
PATTERSON, CA 95363