Public water system record
Lewiston Community Services District
Serves Lewiston, Trinity County, CA · 677 people served
Federal records show 1 health-based violation and 2 monitoring/reporting issues for Lewiston Community Services District in the last ten years. The most serious issue in this window was a resolved Interim Enhanced Surface Water Treatment Rule violation.
System profile
- Health-based violations, last 10 years
- 1
- Resolved
- 1
- Unresolved
- 0
- Any acute record
- Yes
- Monitoring issues, last 10 years
- 2
Key facts
- Lewiston Community Services District draws water from 4 wells and 1 infiltration gallery (1 of them for emergency, seasonal or other part-time use).
- Most recent formal enforcement: compliance order (no penalty) by California, May 2024.
- Record on file since 1992, with 34 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 236 service lines.
Check whether Lewiston Community Services 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 |
|---|---|---|---|---|
|
Interim Enhanced Surface Water Treatment Rule
Treatment technique failure
|
120 | Mar 1, 2024 | Resolved | Yes |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
OTHER
|
Nov 1, 2020 | Resolved |
|
Surface Water Treatment Rule
Monitoring and reporting
|
Nov 1, 2020 | Resolved |
Full record since 1992
EPA's records for Lewiston Community Services District go back to 1992. Before October 19, 2016 they list 34 health-based violations (34 resolved) and 1 monitoring or reporting violation.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 2 | 1 |
| 2000s | 9 | 0 |
| 2010 to October 18, 2016 | 23 | 0 |
| 2020s | 1 | 2 |
Most recent health-based violation before October 19, 2016: Arsenic, began April 2015, Resolved.
Show all 34 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.0278 mg/L, federal limit 0.01 mg/L (2.8 times the limit)
|
Apr 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.023 mg/L, federal limit 0.01 mg/L (2.3 times the limit)
|
Jan 1, 2015 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0204 mg/L, federal limit 0.01 mg/L (2 times the limit)
|
Oct 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0194 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
|
Jul 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0194 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
|
Apr 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0271 mg/L, federal limit 0.01 mg/L (2.7 times the limit)
|
Jan 1, 2014 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0178 mg/L, federal limit 0.01 mg/L (1.8 times the limit)
|
Oct 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0186 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
|
Jul 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0195 mg/L, federal limit 0.01 mg/L (2 times the limit)
|
Apr 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0234 mg/L, federal limit 0.01 mg/L (2.3 times the limit)
|
Jan 1, 2013 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0266 mg/L, federal limit 0.01 mg/L (2.7 times the limit)
|
Oct 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0272 mg/L, federal limit 0.01 mg/L (2.7 times the limit)
|
Jul 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0271 mg/L, federal limit 0.01 mg/L (2.7 times the limit)
|
Apr 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0258 mg/L, federal limit 0.01 mg/L (2.6 times the limit)
|
Jan 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0243 mg/L, federal limit 0.01 mg/L (2.4 times the limit)
|
Oct 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0249 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Jul 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0246 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Apr 1, 2011 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Feb 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0246 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Jan 1, 2011 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0261 mg/L, federal limit 0.01 mg/L (2.6 times the limit)
|
Oct 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0245 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Jul 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0248 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Apr 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0231 mg/L, federal limit 0.01 mg/L (2.3 times the limit)
|
Jan 1, 2010 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.023 mg/L, federal limit 0.01 mg/L (2.3 times the limit)
|
Oct 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0243 mg/L, federal limit 0.01 mg/L (2.4 times the limit)
|
Jul 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0254 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Apr 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.03 mg/L, federal limit 0.01 mg/L (3 times the limit)
|
Jan 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0304 mg/L, federal limit 0.01 mg/L (3 times the limit)
|
Oct 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0278 mg/L, federal limit 0.01 mg/L (2.8 times the limit)
|
Jul 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0253 mg/L, federal limit 0.01 mg/L (2.5 times the limit)
|
Apr 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0192 mg/L, federal limit 0.01 mg/L (1.9 times the limit)
|
Jan 1, 2008 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.0135 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Oct 7, 2007 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jun 1, 1993 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Jan 1, 1992 | Resolved |
Enforcement actions
California regulators took 6 formal enforcement actions against Lewiston Community Services District between 1994 and 2024. The most recent was a compliance order (no penalty) in May 2024.
| Date | By | Action | Violations covered |
|---|---|---|---|
| May 28, 2024 | California | Compliance order (no penalty) | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| Apr 30, 2021 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| Jun 22, 2011 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Feb 24, 2009 | California | Compliance order (no penalty) | 31 violations (31 health-based): Arsenic |
| Jul 18, 1994 | California | Signed compliance agreement | 1 violation (1 health-based): Surface Water Treatment Rule |
| Jun 28, 1994 | California | Signed compliance agreement | 1 violation (1 health-based): Surface Water Treatment Rule |
What the violations mean
Interim Enhanced Surface Water Treatment Rule
1 incidentThe system did not meet a filtration or treatment requirement for surface water
Inadequate treatment of surface water can let pathogens such as Cryptosporidium and Giardia through
Where the water comes from
Lewiston Community Services District draws water from 4 wells and 1 infiltration gallery (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Lewiston Community Services 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.
Where the state allows it, systems serving fewer than 10,000 people may publish the report in a local newspaper or news site instead of mailing it, and must provide a copy on request.
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