Public water system record
Ecco
Serves Oakhurst, Madera County, CA · 100 people served
Federal records show 2 health-based violations and 2 monitoring/reporting issues for Ecco 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
- 2
- Resolved
- 2
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 2
Key facts
- Ecco draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
- Highest measured level in the last 10 years: Arsenic, 0.0255 mg/L, federal limit 0.01 mg/L (2.6 times the limit), 2017.
- Most recent formal enforcement: compliance order (no penalty) by California, August 2014.
- Record on file since 2008, with 3 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 64 service lines.
Check whether Ecco 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 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
330 | Sep 1, 2017 | Resolved | No |
|
Arsenic
Contaminant limit exceeded
Measured 0.0255 mg/L, federal limit 0.01 mg/L (2.6 times the limit)
|
330 | Aug 1, 2017 | 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
|
Jan 1, 2023 | Resolved |
|
Combined Uranium
Monitoring and reporting
|
Jan 1, 2012 | Resolved |
Full record since 2008
EPA's records for Ecco go back to 2008. Before October 19, 2016 they list 3 health-based violations (3 resolved) and 8 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 2000s | 2 | 2 |
| 2010 to October 18, 2016 | 1 | 6 |
| October 19, 2016 to 2019 | 2 | 0 |
| 2020s | 0 | 1 |
Most recent health-based violation before October 19, 2016: Arsenic, began October 2012, Resolved.
Show all 3 health-based violations before October 19, 2016
| Contaminant | Start date | Status |
|---|---|---|
|
Arsenic
Contaminant limit exceeded
Measured 0.016 mg/L, federal limit 0.01 mg/L (1.6 times the limit)
|
Oct 1, 2012 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.015 mg/L, federal limit 0.01 mg/L (1.5 times the limit)
|
Apr 1, 2009 | Resolved |
|
Arsenic
Contaminant limit exceeded
Measured 0.014 mg/L, federal limit 0.01 mg/L (1.4 times the limit)
|
Jan 1, 2009 | Resolved |
Enforcement actions
California regulators took 1 formal enforcement action against Ecco in 2014. The most recent was a compliance order (no penalty) in August 2014.
| Date | By | Action | Violations covered |
|---|---|---|---|
| Aug 12, 2014 | California | Compliance order (no penalty) | 3 violations (3 health-based): Arsenic |
What the violations mean
Arsenic
2 incidentsArsenic exceeded the federal limit
Long-term arsenic exposure is linked to cancer and cardiovascular effects
Where the water comes from
Ecco draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
Annual water quality report
Ecco 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 Ecco 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