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Public water system record

Redwood Valley County Water District

Serves an area of Mendocino County, CA that includes Redwood Valley · 5,200 people served

Federal records show no health-based violations and no monitoring or reporting issues for Redwood Valley County Water District in the last ten years.

  • CA2310008
  • UKIAH
  • CA
  • 5,200 served

System profile

Source water Surface water
ZIP 95482
EPA system ID CA2310008

Verify this system on EPA ECHO →

Health-based violations, last 10 years
0
Resolved
0
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
0

Key facts

  • Redwood Valley County Water District draws water from 1 surface water intake.
  • Record on file since 1993, with 5 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 1,107 service lines.

Check whether Redwood Valley County Water District serves your address

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Health-based violations

Since October 2016

Violation 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 1993

EPA's records for Redwood Valley County Water District go back to 1993. Before October 19, 2016 they list 5 health-based violations (5 resolved) and 1 monitoring or reporting violation.

Violations that began in Health-based Monitoring and reporting
1990s 1 1
2000s 4 0

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began April 2005, Resolved.

Show all 5 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.08 mg/L (1.2 times the limit)
 Apr 1, 2005 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.092 mg/L, federal limit 0.06 mg/L (1.5 times the limit)
 Apr 1, 2005 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.088 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jan 1, 2005 Resolved
Haloacetic Acids (HAA5)
Contaminant limit exceeded
Measured 0.076 mg/L, federal limit 0.06 mg/L (1.3 times the limit)
 Jan 1, 2005 Resolved
Surface Water Treatment Rule
Treatment technique failure
 Jan 1, 1995 Resolved

Where the water comes from

Redwood Valley County Water District draws water from 1 surface water intake. It also buys water from Calpella County Water District. 2 other community water systems buy water from Redwood Valley County Water District.

Buys water from

Community systems that buy water from it

Annual water quality report

Redwood Valley County Water 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