Public water system record
Darwin Community Service District
Serves Darwin, Inyo County, CA · 40 people served
Federal records show 3 health-based violations and 5 monitoring/reporting issues for Darwin Community Service District in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.
System profile
- Health-based violations, last 10 years
- 3
- Resolved
- 3
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 5
Key facts
- Darwin Community Service District draws water from 1 spring.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2021.
- Most recent formal enforcement: compliance order (no penalty) by California, March 2021.
- Record on file since 1980, with 20 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 63 service lines.
Check whether Darwin Community Service 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 |
|---|---|---|---|---|
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Apr 1, 2021 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2021 | Resolved | No |
|
Surface Water Treatment Rule
Treatment technique failure
|
120 | Aug 1, 2019 | 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, 2024 | Active |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2020 | Resolved |
|
Total Trihalomethanes (TTHMs)
Monitoring and reporting
|
Jan 1, 2019 | Resolved |
|
Revised Total Coliform Rule
Monitoring violation
|
May 1, 2018 | Resolved |
|
Lead and Copper Rule
Monitoring and reporting
|
Oct 1, 2015 | Resolved |
Full record since 1980
EPA's records for Darwin Community Service District go back to 1980. Before October 19, 2016 they list 20 health-based violations (2 resolved, 18 archived by EPA without a recorded fix) and 7 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1980s | 0 | 3 |
| 1990s | 0 | 1 |
| 2000s | 20 | 0 |
| 2010 to October 18, 2016 | 0 | 3 |
| October 19, 2016 to 2019 | 1 | 2 |
| 2020s | 2 | 2 |
Most recent health-based violation before October 19, 2016: Total Coliform, began July 2005, Resolved.
Show all 20 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2005 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2004 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Sep 1, 2004 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Aug 1, 2004 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2003 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Mar 1, 2001 | Archived |
|
Total Coliform (acute)
Contaminant limit exceeded
|
Feb 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jan 1, 2001 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Dec 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Nov 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Oct 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Sep 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jul 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
May 1, 2000 | Archived |
|
Total Coliform
Contaminant limit exceeded
|
Apr 1, 2000 | Archived |
Enforcement actions
California regulators took 4 formal enforcement actions against Darwin Community Service District and issued 2 boil water orders between 2000 and 2021. The most recent was a compliance order (no penalty) in March 2021.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Mar 22, 2021 | California | Compliance order (no penalty) | 4 violations (2 health-based): Total Trihalomethanes (TTHMs) |
| Oct 8, 2020 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Feb 26, 2019 | California | Compliance order (no penalty) | 1 violation: Lead and Copper Rule |
| Feb 5, 2015 | California | Compliance order (no penalty) | 2 violations: Total Trihalomethanes (TTHMs), Haloacetic Acids (HAA5) |
| Aug 19, 2004 | California | Boil water order | 1 violation (1 health-based): Total Coliform |
| Apr 19, 2000 | California | Boil water order | 1 violation (1 health-based): Total Coliform |
What the violations mean
Total Trihalomethanes (TTHMs)
2 incidentsDisinfection byproduct levels exceeded the federal limit
Long-term TTHM exposure may increase bladder cancer risk
Surface Water Treatment Rule
1 incidentThe 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 this violation.
Where the water comes from
Darwin Community Service District draws water from 1 spring.
Annual water quality report
Darwin Community Service 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 Darwin Community Service 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