Public water system record
Signal Hill - City, Water Dept.
Serves Signal Hill, Los Angeles County, CA · 11,848 people served
Federal records show 5 health-based violations and 2 monitoring/reporting issues for Signal Hill - City, Water Dept. in the last ten years. The most serious issue in this window was a resolved Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 5
- Resolved
- 5
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Signal Hill - City, Water Dept. draws water from 3 wells.
- Most recent formal enforcement: compliance order (no penalty) by California, June 2025.
- Record on file since 1989, with 1 health-based violation before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 3,201 service lines.
Check whether Signal Hill - City, Water Dept. serves your address
Health-based violations
Since October 2016Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.
| Contaminant | Rule family | Start date | Status | Acute |
|---|---|---|---|---|
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Apr 1, 2025 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2025 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Feb 1, 2025 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | May 1, 2022 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2022 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
Full record since 1989
EPA's records for Signal Hill - City, Water Dept. go back to 1989. Before October 19, 2016 they list 1 health-based violation (1 resolved) and 4 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 1 |
| 1990s | 1 | 1 |
| 2010 to October 18, 2016 | 0 | 2 |
| 2020s | 5 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began June 1993, Resolved.
Show the health-based violation before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 1993 | Resolved |
Enforcement actions
California regulators took 5 formal enforcement actions against Signal Hill - City, Water Dept. between 2015 and 2025. The most recent was a compliance order (no penalty) in June 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jun 26, 2025 | California | Compliance order (no penalty) | 3 violations (3 health-based): Surface Water Treatment Rule |
| Nov 17, 2023 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Jul 26, 2023 | California | Compliance order (no penalty) | 1 violation: Consumer Confidence Rule |
| Jan 27, 2023 | California | Compliance order (no penalty) | 2 violations (2 health-based): Surface Water Treatment Rule |
| Sep 8, 2015 | California | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
What the violations mean
Surface Water Treatment Rule
5 incidentsThe system did not complete a treatment step or action that the Surface Water Treatment Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
Where the water comes from
Signal Hill - City, Water Dept. draws water from 3 wells. It also buys water from Metropolitan Water Dist. of So. Cal. It also has emergency connections to Long Beach Utilities Department and Lakewood - City, Water Dept.
Buys water from
- Metropolitan Water Dist. of So. Cal. La Verne, CA
Emergency or part-time connections to
- Long Beach Utilities Department Long Beach, CA
- Lakewood - City, Water Dept. Lakewood, CA
Annual water quality report
Signal Hill - City, Water Dept. must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.
Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.
Find a posted report with EPA's Consumer Confidence Report search
Testing your own water
To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by California.
Certified drinking water labs by state EPA guidance for private wells