Public water system record

Lake Siskiyou M.W.C.

Serves an area of Siskiyou County, CA · 277 people served

Federal records show 3 health-based violations and 2 monitoring/reporting issues for Lake Siskiyou M.W.C. in the last ten years. The most serious issue in this window was a resolved Revised Total Coliform Rule violation.

  • CA4700549
  • MT. SHASTA
  • CA
  • 277 served

System profile

Source water Groundwater
ZIP 96067
EPA system ID CA4700549

Verify this system on EPA ECHO →

Health-based violations, last 10 years
3
Resolved
3
Unresolved
0
Any acute record
Yes
Monitoring issues, last 10 years
2

Key facts

  • Lake Siskiyou M.W.C. draws water from 2 wells.
  • Most recent enforcement action: boil water order by California, May 2020.
  • Record on file since 1980, with 9 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 90 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
Revised Total Coliform Rule
Treatment technique failure
110 May 1, 2020 Resolved No
Revised Total Coliform Rule
Contaminant limit exceeded
110 Dec 1, 2019 Resolved Yes
Revised Total Coliform Rule
Treatment technique failure
110 Jul 1, 2019 Resolved No

Monitoring and reporting issues

Since October 2016

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

Issue Start date Status
Revised Total Coliform Rule
Monitoring violation
Sep 1, 2019 Resolved
Lead and Copper Rule
Monitoring and reporting
Jan 1, 2018 Resolved

Full record since 1980

EPA's records for Lake Siskiyou M.W.C. go back to 1980. Before October 19, 2016 they list 9 health-based violations (9 resolved) and 3 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1980s 0 3
1990s 2 0
2000s 3 0
2010 to October 18, 2016 4 0
October 19, 2016 to 2019 2 2
2020s 1 0

Most recent health-based violation before October 19, 2016: Total Coliform, began August 2014, Resolved.

Show all 9 health-based violations before October 19, 2016
Contaminant Start date Status
Total Coliform
Contaminant limit exceeded
Aug 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2014 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2011 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 2010 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2007 Resolved
Total Coliform
Contaminant limit exceeded
Jul 1, 2006 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 2000 Resolved
Total Coliform
Contaminant limit exceeded
Aug 1, 1996 Resolved
Total Coliform
Contaminant limit exceeded
Sep 1, 1993 Resolved

Enforcement actions

California regulators took 2 formal enforcement actions against Lake Siskiyou M.W.C. and issued 1 boil water order between 2019 and 2020, filed as 4 records in EPA's data. The most recent was a boil water order in May 2020.

Date By Action Violations covered
May 15, 2020 California Boil water order 1 violation (1 health-based): Revised Total Coliform Rule
Jan 24, 2020 California Compliance order (no penalty) 2 violations (1 health-based): Revised Total Coliform Rule
Jul 18, 2019 California Compliance order (no penalty) 1 violation (1 health-based): Revised Total Coliform Rule

What the violations mean

Revised Total Coliform Rule

3 incidents

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

Lake Siskiyou M.W.C. draws water from 2 wells.

Annual water quality report

Lake Siskiyou M.W.C. 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 Lake Siskiyou M.W.C. 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.