Public water system record
Delores Lane Water System
Serves an area of Sonoma County, CA · 59 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Delores Lane Water System in the last ten years. The most serious issue in this window was a resolved Arsenic violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Delores Lane Water System draws water from 2 wells.
- Highest measured level in the last 10 years: Arsenic, 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by California, December 2020.
- Record on file since 2008, with 2 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 17 service lines.
Check whether Delores Lane Water System 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 |
|---|---|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.017 mg/L, federal limit 0.01 mg/L (1.7 times the limit)
|
330 | Oct 1, 2017 | 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
|
Jul 1, 2020 | Resolved |
|
Nitrate
Monitoring and reporting
|
Apr 1, 2020 | Resolved |
Full record since 2008
EPA's records for Delores Lane Water System go back to 2008. Before October 19, 2016 they list 2 health-based violations (2 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 2 | 1 |
| October 19, 2016 to 2019 | 1 | 0 |
| 2020s | 0 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began August 2009, Resolved.
Show all 2 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2009 | Resolved |
|
Total Coliform (acute)
Contaminant limit exceeded
|
May 1, 2009 | Resolved |
Enforcement actions
California regulators took 6 formal enforcement actions against Delores Lane Water System between 2008 and 2020. The most recent was a compliance order (no penalty) in December 2020.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Dec 4, 2020 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Sep 25, 2020 | California | Compliance order (no penalty) | 1 violation: Nitrate |
| Jan 2, 2018 | California | Compliance order (no penalty) | 1 violation (1 health-based): Arsenic |
| Sep 25, 2009 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Jun 25, 2009 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| May 2, 2008 | California | Compliance order (no penalty) | 1 violation: Total Coliform |
What the violations mean
Arsenic
1 incidentArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Delores Lane Water System draws water from 2 wells.
Annual water quality report
Delores Lane Water System 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 Delores Lane Water System 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