Public water system record
Washington Water District
Serves an area of Nevada County, CA that includes Washington · 330 people served
Federal records show 2 health-based violations and 7 monitoring/reporting issues for Washington Water District in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
- Health-based violations, last 10 years
- 2
- Resolved
- 1
- Unresolved
- 1
- Any acute record
- No
- Monitoring issues, last 10 years
- 7
Key facts
- Washington Water District draws water from 1 surface water intake.
- Most recent formal enforcement: compliance order (no penalty) by California, November 2025.
- Record on file since 1981, with 2 health-based violations before October 20, 2016.
- Lead pipe inventory: 0 lead and 115 unknown out of 115 service lines.
Check whether Washington Water District 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 |
|---|---|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Oct 1, 2007 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Nitrate
Monitoring and reporting
|
Oct 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Nitrate
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Haloacetic Acids (HAA5)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
Full record since 1981
EPA's records for Washington Water District go back to 1981. Before October 20, 2016 they list 2 health-based violations (2 resolved) and 30 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 25 |
| 1990s | 0 | 2 |
| 2000s | 2 | 2 |
| 2010 to October 19, 2016 | 0 | 1 |
| 2020s | 1 | 7 |
Most recent health-based violation before October 20, 2016: Long Term 2 Enhanced Surface Water Treatment Rule, began October 2007, Resolved.
Show all 2 health-based violations before October 20, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Long Term 2 Enhanced Surface Water Treatment Rule
Treatment technique failure
|
Oct 1, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2002 | Resolved |
Enforcement actions
California regulators took 4 formal enforcement actions against Washington Water District and issued 2 boil water orders between 2002 and 2025. The most recent was a compliance order (no penalty) in November 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 26, 2025 | California | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Feb 2, 2021 | California | Compliance order (no penalty) | 2 violations: Haloacetic Acids (HAA5), Total Trihalomethanes (TTHMs) |
| Feb 2, 2018 | California | Compliance order (no penalty) | 1 violation (1 health-based): Long Term 2 Enhanced Surface Water Treatment Rule |
| Jan 11, 2017 | California | Compliance order (no penalty) | 1 violation (1 health-based): Long Term 2 Enhanced Surface Water Treatment Rule |
| Nov 14, 2014 | California | Boil water order | 1 violation (1 health-based): Surface Water Treatment Rule |
| Nov 13, 2002 | California | Boil water order | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
LEAD AND COPPER RULE REVISIONS
1 incidentThe system did not complete a treatment step or action that the LEAD AND COPPER RULE REVISIONS requires (a treatment technique violation).
The utility had to notify customers about this violation.
Long Term 2 Enhanced Surface Water Treatment Rule
1 incidentThe system failed required surface water treatment or filtration standards
Untreated or inadequately treated surface water can contain bacteria and viruses
Where the water comes from
Washington Water District draws water from 1 surface water intake.
Annual water quality report
Washington Water District 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 500 or fewer people may meet the rule by telling customers the report is available on request, so you may need to ask Washington Water District for a copy.
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