Public water system record
Valley Ford Water Association
Serves Valley Ford, Sonoma County, CA · 88 people served
Federal records show 48 health-based violations and 3 monitoring/reporting issues for Valley Ford Water Association in the last ten years, including an unresolved LEAD AND COPPER RULE REVISIONS violation.
System profile
Source water
Groundwater
ZIP
94972
EPA system ID
CA4900568
- Health-based violations, last 10 years
- 48
- Resolved
- 3
- Unresolved
- 1
- Archived by EPA
- 44
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 3
Key facts
- Valley Ford Water Association draws water from 5 wells.
- Highest measured level in the last 10 years: Nitrate, 28 mg/L, federal limit 10 mg/L (2.8 times the limit), 2022.
- Most recent formal enforcement: compliance order (no penalty) by California, November 2020.
- Record on file since 1980, with 35 health-based violations before October 19, 2016.
Check whether Valley Ford Water Association 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 |
|---|---|---|---|---|
|
Nitrate
Contaminant limit exceeded
Measured 14.4 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Jul 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 14.7 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
330 | Apr 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 14.4 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Jan 1, 2025 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
LEAD AND COPPER RULE REVISIONS
Treatment technique failure
|
350 | Oct 17, 2024 | Active | No |
|
Nitrate
Contaminant limit exceeded
Measured 14.2 mg/L, federal limit 10 mg/L (1.4 times the limit)
|
330 | Oct 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 11.7 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jul 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 11.7 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Apr 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Jan 1, 2024 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 11.5 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.069 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Oct 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.07 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.114 mg/L, federal limit 0.08 mg/L (1.4 times the limit)
|
220 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 13 mg/L, federal limit 10 mg/L (1.3 times the limit)
|
330 | Jul 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.064 mg/L, federal limit 0.06 mg/L (1.1 times the limit)
|
220 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 11 mg/L, federal limit 10 mg/L (1.1 times the limit)
|
330 | Apr 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.095 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
|
220 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
330 | Jan 1, 2023 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.148 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Jul 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.149 mg/L, federal limit 0.08 mg/L (1.9 times the limit)
|
220 | Apr 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 20 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Apr 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 28 mg/L, federal limit 10 mg/L (2.8 times the limit)
|
330 | Jan 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.139 mg/L, federal limit 0.08 mg/L (1.7 times the limit)
|
220 | Jan 1, 2022 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
330 | Oct 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.131 mg/L, federal limit 0.08 mg/L (1.6 times the limit)
|
220 | Oct 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
330 | Jan 1, 2021 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 17 mg/L, federal limit 10 mg/L (1.7 times the limit)
|
330 | Oct 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 23 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Jul 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.061 mg/L, federal limit 0.06 mg/L (at or just above the limit)
|
220 | Jul 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.182 mg/L, federal limit 0.08 mg/L (2.3 times the limit)
|
220 | Jul 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 23 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Apr 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.071 mg/L, federal limit 0.06 mg/L (1.2 times the limit)
|
220 | Apr 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.185 mg/L, federal limit 0.08 mg/L (2.3 times the limit)
|
220 | Apr 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 23 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.105 mg/L, federal limit 0.08 mg/L (1.3 times the limit)
|
220 | Jan 1, 2020 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
No |
|
Nitrate
Contaminant limit exceeded
Measured 26 mg/L, federal limit 10 mg/L (2.6 times the limit)
|
330 | Oct 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Groundwater Rule
Treatment technique failure
|
140 | Aug 1, 2019 | Resolved | No |
|
Nitrate
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
330 | Jul 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 20 mg/L, federal limit 10 mg/L (2 times the limit)
|
330 | Apr 1, 2019 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Groundwater Rule
Treatment technique failure
|
140 | Mar 1, 2019 | Resolved | No |
|
Groundwater Rule
Treatment technique failure
|
140 | Feb 1, 2019 | Resolved | No |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Oct 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 12 mg/L, federal limit 10 mg/L (1.2 times the limit)
|
330 | Jul 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 15 mg/L, federal limit 10 mg/L (1.5 times the limit)
|
330 | Apr 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 23 mg/L, federal limit 10 mg/L (2.3 times the limit)
|
330 | Jan 1, 2018 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 13 mg/L, federal limit 10 mg/L (1.3 times the limit)
|
330 | Apr 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 13 mg/L, federal limit 10 mg/L (1.3 times the limit)
|
330 | Jan 1, 2017 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
|
Nitrate
Contaminant limit exceeded
Measured 18 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
330 | Oct 1, 2016 |
Archived
Violation period ended. EPA no longer counts it toward current compliance, but no fix was formally recorded.
|
Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
LEAD AND COPPER RULE REVISIONS
RPT
|
Oct 17, 2024 | Active |
|
Miscellaneous Other Rules
OTHER
|
Feb 28, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Jul 1, 2006 | Resolved |
Full record since 1980
EPA's records for Valley Ford Water Association go back to 1980. Before October 19, 2016 they list 35 health-based violations (35 archived by EPA without a recorded fix) and 15 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 9 |
| 1990s | 0 | 1 |
| 2000s | 11 | 5 |
| 2010 to October 18, 2016 | 24 | 0 |
| October 19, 2016 to 2019 | 12 | 1 |
| 2020s | 35 | 1 |
Most recent health-based violation before October 19, 2016: Nitrate (acute), began October 2016, Archived.
Show all 35 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Nitrate (acute)
Contaminant limit exceeded
Measured 18 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
Oct 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 13.375 mg/L, federal limit 10 mg/L (1.3 times the limit)
|
Jul 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 12.875 mg/L, federal limit 10 mg/L (1.3 times the limit)
|
Apr 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
Measured 18 mg/L, federal limit 10 mg/L (1.8 times the limit)
|
Jan 1, 2016 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2015 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2014 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2013 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2013 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2013 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2013 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2012 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2012 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2012 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2011 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2011 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2011 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 10, 2011 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2010 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2010 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2010 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 10, 2010 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2009 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2009 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Oct 1, 2008 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2008 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2008 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2008 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2007 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Apr 1, 2007 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jan 1, 2007 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Sep 1, 2006 | Archived |
|
Nitrate (acute)
Contaminant limit exceeded
|
Jul 1, 2006 | Archived |
Enforcement actions
California regulators took 9 formal enforcement actions against Valley Ford Water Association between 2005 and 2020. The most recent was a compliance order (no penalty) in November 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Nov 4, 2020 | California | Compliance order (no penalty) | 15 violations (15 health-based): Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Sep 24, 2019 | California | Compliance order (no penalty) | 1 violation (1 health-based): Groundwater Rule |
| Sep 12, 2019 | California | Compliance order (no penalty) | 1 violation: Miscellaneous Other Rules |
| Apr 5, 2019 | California | Compliance order (no penalty) | 2 violations (2 health-based): Groundwater Rule |
| Jun 20, 2008 | California | Compliance order (no penalty) | 34 violations (34 health-based): Nitrate |
| Mar 18, 2008 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Nov 26, 2007 | California | Compliance order (no penalty) | 30 violations (30 health-based): Nitrate |
| Nov 30, 2006 | California | Compliance order (no penalty) | 2 violations: Lead and Copper Rule |
| Apr 25, 2005 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
What the violations mean
Nitrate
29 incidentsNitrate exceeded the federal limit
High nitrate is especially dangerous for infants under 6 months and can cause blue baby syndrome
Total Trihalomethanes (TTHMs)
10 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Haloacetic Acids (HAA5)
5 incidentsHaloacetic acid byproducts exceeded the federal limit
Long-term exposure to HAAs may increase cancer risk
Groundwater Rule
3 incidentsThe system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).
The utility had to notify customers about each of these violations.
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.
Where the water comes from
Valley Ford Water Association draws water from 5 wells.
Annual water quality report
Valley Ford Water Association 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 Valley Ford Water Association 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