Public water system record
Napa River Ranch
Serves an area of Napa County, CA · 70 people served
Federal records show 2 health-based violations and 21 monitoring/reporting issues for Napa River Ranch 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
- 21
Key facts
- Napa River Ranch draws water from 1 well.
- Most recent formal enforcement: compliance order with a penalty by California, November 2025.
- Record on file since 1980, with 0 health-based violations before October 19, 2016.
Check whether Napa River Ranch 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 |
|
Revised Total Coliform Rule
Treatment technique failure
|
110 | Dec 1, 2022 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2025 |
Active
Enforcement action in place
|
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2025 |
Active
Enforcement action in place
|
|
Nitrate
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
Monitoring and reporting
|
Jan 1, 2025 |
Active
Enforcement action in place
|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2023 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2023 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2023 | Resolved |
|
Revised Total Coliform Rule
RPT
|
Dec 1, 2022 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2022 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jan 1, 2021 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2020 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Aug 1, 2019 | Resolved |
|
Consumer Confidence Rule
OTHER
|
Jul 1, 2019 |
Active
Enforcement action in place
|
|
Revised Total Coliform Rule
Monitoring violation
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2019 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2018 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
Sep 1, 2018 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2018 | Resolved |
|
Nitrate
Monitoring and reporting
|
Jan 1, 2016 | Resolved |
Full record since 1980
EPA's records for Napa River Ranch go back to 1980. Before October 19, 2016 they list no health-based violations and 9 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 4 |
| 1990s | 0 | 1 |
| 2000s | 0 | 1 |
| 2010 to October 18, 2016 | 0 | 3 |
| October 19, 2016 to 2019 | 0 | 7 |
| 2020s | 2 | 13 |
Enforcement actions
California regulators took 16 formal enforcement actions against Napa River Ranch between 2016 and 2025. The most recent was a compliance order with a penalty in November 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 24, 2025 | California | Compliance order with a penalty | 1 violation: Consumer Confidence Rule |
| Sep 30, 2025 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Jun 30, 2025 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Mar 28, 2025 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Feb 13, 2025 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Apr 29, 2024 | California | Compliance order (no penalty) | 2 violations: Consumer Confidence Rule, Nitrate |
| Nov 29, 2023 | California | Compliance order with a penalty | 2 violations: Lead and Copper Rule, Consumer Confidence Rule |
| Aug 3, 2022 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| May 2, 2022 | California | Compliance order with a penalty | 1 violation: Nitrate |
| Jan 28, 2022 | California | Compliance order with a penalty | 2 violations: Lead and Copper Rule, Nitrate |
| Feb 24, 2021 | California | Compliance order with a penalty | 1 violation: Lead and Copper Rule |
| Nov 12, 2020 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Oct 24, 2019 | California | Compliance order with a penalty | 5 violations: Lead and Copper Rule, Revised Total Coliform Rule, Consumer Confidence Rule, Nitrate |
| Jan 15, 2019 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Jun 6, 2017 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Apr 15, 2016 | California | Administrative penalty | 1 violation: Total Coliform |
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.
Revised Total Coliform Rule
1 incidentThe system did not meet a requirement of the Revised Total Coliform Rule
Coliform and E. coli rules protect against bacteria in the distribution system
Where the water comes from
Napa River Ranch draws water from 1 well.
Annual water quality report
Napa River Ranch 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 Napa River Ranch 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