Public water system record
Awa, Ione
Serves an area of Amador County, CA that includes Jackson and Ione · 7,227 people served
Federal records show 2 health-based violations and 1 monitoring/reporting issue for Awa, Ione 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
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 1
Key facts
- Awa, Ione draws water from 1 surface water intake.
- Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by California, January 2025.
- Record on file since 1993, with 6 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 89 unknown out of 2,340 service lines.
Check whether Awa, Ione 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 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
|
220 | Apr 1, 2022 | Resolved | No |
|
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
|
220 | Jan 1, 2017 | Resolved | No |
Monitoring and reporting issues
Since October 2016Missed tests or reports, not contaminants found above a limit.
| Issue | Start date | Status |
|---|---|---|
|
Revised Total Coliform Rule
Monitoring violation
|
Dec 1, 2024 | Resolved |
Full record since 1993
EPA's records for Awa, Ione go back to 1993. Before October 19, 2016 they list 6 health-based violations (6 resolved) and 2 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 1 |
| 2000s | 5 | 1 |
| 2010 to October 18, 2016 | 1 | 0 |
| October 19, 2016 to 2019 | 1 | 0 |
| 2020s | 1 | 1 |
Most recent health-based violation before October 19, 2016: CARBON, TOTAL, began July 2015, Resolved.
Show all 6 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
CARBON, TOTAL
Treatment technique failure
|
Jul 1, 2015 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2009 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Jun 1, 2006 | Resolved |
|
Interim Enhanced Surface Water Treatment Rule (acute)
Treatment technique failure
|
Jan 1, 2006 | Resolved |
|
Surface Water Treatment Rule
Treatment technique failure
|
Nov 1, 2005 | Resolved |
|
Total Coliform
Contaminant limit exceeded
|
Aug 1, 2004 | Resolved |
Enforcement actions
California regulators took 9 formal enforcement actions against Awa, Ione between 2004 and 2025. The most recent was a compliance order (no penalty) in January 2025.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Jan 14, 2025 | California | Compliance order (no penalty) | 1 violation: Revised Total Coliform Rule |
| May 12, 2022 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Mar 8, 2017 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Trihalomethanes (TTHMs) |
| Jan 22, 2016 | California | Compliance order (no penalty) | 1 violation (1 health-based): CARBON, TOTAL |
| Sep 9, 2009 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Jul 19, 2006 | California | Compliance order (no penalty) | 1 violation (1 health-based): Total Coliform |
| Jan 13, 2006 | California | Compliance order (no penalty) | 1 violation (1 health-based): Interim Enhanced Surface Water Treatment Rule |
| Nov 22, 2005 | California | Compliance order (no penalty) | 1 violation (1 health-based): Surface Water Treatment Rule |
| Sep 9, 2004 | California | Compliance order (no penalty) | 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
Where the water comes from
Awa, Ione draws water from 1 surface water intake.
Annual water quality report
Awa, Ione 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