Public water system record
Colusa Northern System
Mailing address in Colusa, Colusa County, CA · Serves 67 people
Federal records show no health-based violations and no monitoring or reporting issues for Colusa Northern System in the last ten years.
System profile
- Health-based violations, last 10 years
- 0
- Resolved
- 0
- Unresolved
- 0
- Any acute record
- No
- Monitoring issues, last 10 years
- 0
Key facts
- Colusa Northern System draws water from 1 well.
- Record on file since 1991, with 0 health-based violations before October 19, 2016.
- Lead pipe inventory: 0 lead and 0 unknown out of 10 service lines.
Check whether Colusa Northern 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.
None since October 2016, and no monitoring or reporting violations either.
Full record since 1991
EPA's records for Colusa Northern System go back to 1991. Before October 19, 2016 they list no health-based violations and 154 monitoring or reporting violations.
| Violations that began in | Health-based | Monitoring and reporting |
|---|---|---|
| 1990s | 0 | 52 |
| 2000s | 0 | 102 |
Where the water comes from
Colusa Northern System draws water from 1 well.
Annual water quality report
Colusa Northern 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 Colusa Northern 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 EPA Region 9.
Certified drinking water labs by state EPA guidance for private wells