SIGNAL HILL - CITY, WATER DEPT.
PWSID: CA1910149 · Signal Hill, CA · Serves 11,848 people
According to EPA Safe Drinking Water Information System (SDWIS), SIGNAL HILL - CITY, WATER DEPT. (PWSID CA1910149) in Signal Hill, CA is listed as a CWS water system covering about 11,848 people. The same extract lists 11 health-based violation records spanning 2022-2025. Those 11 health-based rows for SIGNAL HILL - CITY, WATER DEPT. cover contaminants such as Surface Water Treatment Rule; they remain historical EPA registry entries, not a current compliance or drinkability score.
SIGNAL HILL - CITY, WATER DEPT. has 11 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. 1 distinct EPA contaminant code appears in this system's record, including Surface Water Treatment Rule. Recorded violations span 2022–2025. 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)
- CA1910149
- System Type
- CWS
- Water Source
- Surface Water
- Location
- Signal Hill, CA
- Population Served
- 11,848
- Health Violations
- Yes (11)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Surface Water Treatment Rule | 11 | 11 |
Violation History (11)
| Contaminant | Health | Date |
|---|---|---|
| Surface Water Treatment Rule | Yes | Apr 1, 2025 |
| Surface Water Treatment Rule | Yes | Apr 1, 2025 |
| Surface Water Treatment Rule | Yes | Mar 1, 2025 |
| Surface Water Treatment Rule | Yes | Feb 1, 2025 |
| Surface Water Treatment Rule | Yes | May 1, 2022 |
| Surface Water Treatment Rule | Yes | May 1, 2022 |
| Surface Water Treatment Rule | Yes | May 1, 2022 |
| Surface Water Treatment Rule | Yes | May 1, 2022 |
| Surface Water Treatment Rule | Yes | Mar 1, 2022 |
| Surface Water Treatment Rule | Yes | Mar 1, 2022 |
| Surface Water Treatment Rule | Yes | Mar 1, 2022 |
Frequently Asked Questions
What does EPA SDWIS list for SIGNAL HILL - CITY, WATER DEPT.?
How many people does SIGNAL HILL - CITY, WATER DEPT. serve?
What violations does SIGNAL HILL - CITY, WATER DEPT. have?
What contaminants have been found in SIGNAL HILL - CITY, WATER DEPT. water?
Compare beyond California
Nationwide peers by violations & population served
Cross-state SDWIS systems nearest SIGNAL HILL - CITY, WATER DEPT. on cumulative violation count (11) and EPA-reported population served (11,848). Violation-count peers include MICCOSUKEE TRIBE OF INDIANS, WHITE SWAN, HAINES BOROUGH. Population peers include ARKADELPHIA WATERWORKS, RATHBUN REG WATER ASSN (FT MADISON), PICAYUNE UTILITIES, CITY OF.
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
Explore More
About This Data
SIGNAL HILL - CITY, WATER DEPT. (CA1910149) is drawn from EPA SDWIS. Nearby county systems in this extract include LOS ANGELES-CITY, DEPT. OF WATER & POWER; LONG BEACH UTILITIES DEPARTMENT; SANTA CLARITA VALLEY WATER AGENCY; GSWC - SOUTHWEST. Health-based rows (11 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.