Public water system record

Point Arena Rancheria

Serves an area of Mendocino County, CA · 616 people served

Federal records show 7 health-based violations and 20 monitoring/reporting issues for Point Arena Rancheria in the last ten years. The most serious issue in this window was a resolved Groundwater Rule violation.

  • 090600145
  • POINT ARENA
  • CA
  • 616 served

System profile

Source water Groundwater
ZIP 95468
EPA system ID 090600145

Verify this system on EPA ECHO →

Health-based violations, last 10 years
7
Resolved
7
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
20

Key facts

  • Point Arena Rancheria draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).
  • Record on file since 1991, with 11 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 70 service lines.

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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.

Contaminant Rule family Start date Status Acute
Groundwater Rule
Treatment technique failure
140 Jul 9, 2020 Resolved No
Stage 1 Disinfection Byproducts Rule
Treatment technique failure
210 Oct 1, 2019 Resolved No
Revised Total Coliform Rule
Treatment technique failure
110 Feb 1, 2019 Resolved No
Groundwater Rule
Treatment technique failure
140 Oct 4, 2017 Resolved No
Groundwater Rule
Treatment technique failure
140 Oct 4, 2017 Resolved No
Groundwater Rule
Treatment technique failure
140 Oct 4, 2017 Resolved No
Groundwater Rule
Treatment technique failure
140 Oct 4, 2017 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
Chlorine
Monitoring and reporting
Apr 1, 2022 Resolved
Revised Total Coliform Rule
Monitoring violation
Mar 1, 2022 Resolved
Chlorine
Monitoring and reporting
Jan 1, 2022 Resolved
Chlorine
Monitoring and reporting
Oct 1, 2021 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2021 Resolved
Chlorine
Monitoring and reporting
Apr 1, 2021 Resolved
Public Notice
OTHER
Jul 9, 2020 Resolved
Public Notice
OTHER
Jan 1, 2020 Resolved
Revised Total Coliform Rule
Monitoring violation
Jan 1, 2020 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2019 Resolved
Public Notice
OTHER
Feb 1, 2019 Resolved
E. coli
Monitoring and reporting
Feb 1, 2019 Resolved
Public Notice
OTHER
Aug 1, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
Aug 1, 2018 Resolved
Public Notice
OTHER
Jul 1, 2018 Resolved
Consumer Confidence Rule
OTHER
Jul 1, 2018 Resolved
Revised Total Coliform Rule
Monitoring violation
Jul 1, 2018 Resolved
Nitrate
Monitoring and reporting
Jan 1, 2018 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2017 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2016 Resolved

Full record since 1991

EPA's records for Point Arena Rancheria go back to 1991. Before October 19, 2016 they list 11 health-based violations (11 resolved) and 129 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1990s 6 21
2000s 4 78
2010 to October 18, 2016 1 30
October 19, 2016 to 2019 6 10
2020s 1 9

Most recent health-based violation before October 19, 2016: Total Coliform, began June 2015, Resolved.

Show all 11 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Jun 1, 2015 Resolved
Total Coliform
Contaminant limit exceeded
Dec 1, 2008 Resolved
Total Coliform
Contaminant limit exceeded
Jun 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 2004 Resolved
Total Coliform
Contaminant limit exceeded
Feb 1, 2003 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 1998 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 1998 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Jan 1, 1998 Resolved
Total Coliform
Contaminant limit exceeded
Jan 1, 1997 Resolved
Total Coliform (acute)
Contaminant limit exceeded
Nov 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
May 1, 1991 Resolved

What the violations mean

Groundwater Rule

5 incidents

The system did not complete a treatment step or action that the Groundwater Rule requires (a treatment technique violation).

The utility had to notify customers about each of these violations.

Stage 1 Disinfection Byproducts Rule

1 incident

The system did not meet a treatment requirement of the Stage 1 Disinfectants and Disinfection Byproducts Rule

Byproducts form when disinfectants react with natural material in water. Long-term exposure above federal limits may increase cancer risk

Revised Total Coliform Rule

1 incident

The system did not meet a requirement of the Revised Total Coliform Rule

Coliform and E. coli rules protect against bacteria in the distribution system

Where the water comes from

Point Arena Rancheria draws water from 3 wells (1 of them for emergency, seasonal or other part-time use).

Annual water quality report

Point Arena Rancheria 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 EPA Region 9.