Community Water System · PWSID CA0400013

Merry Mountain Mutual

Serves 90 peopleGroundwaterOwner: PrivateClipper Mills, California
Nothing open right now.

On record since 1993: 6 violations. 1 over the limit · 3 missed or late tests · 2 notices or reports. Most recent began 2022-10-01.

For this year's test results, ask the utility for its annual Consumer Confidence Report. Every community system must publish one.

1Over the limit
0Treatment lapse
3Missed or late test
2Notice or report

More violations on record than 80% of active water systems in California. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1993 · Missed or late test: 11995200020052009 · Over the limit: 12009 · Missed or late test: 120102015 · Missed or late test: 1201520202022 · Notice or report: 22022 · Notice or report: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
17% over the limit · 150% missed or late test · 333% notice or report · 2

Across California, 52% of violations are missed or late tests and 29% are water over a limit.

Lead & copper at the tap

Utilities sample taps in homes most likely to have lead pipes, and report the 90th-percentile result: 9 in 10 homes sampled came in at or below this number. Above the red line (the action level) the utility must act. The action level is not a safe level; EPA's health goal for lead is zero. EPA's file does not date these results, so they are shown highest first.

Lead, 90th percentile 3 results on file · action level 15 ppb

6.5 ppb
3 ppb
0 ppb

Every violation on record

  1. 2022-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  2. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  3. 2015-01-01ArsenicMonitoring, RegularBack in compliance
  4. 2009-06-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  5. 2009-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  6. 1993-07-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served90
Service connections97
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityClipper Mills
EPA ZIP on file95930

Areas served

  • Butte County

Reading this record

Merry Mountain Mutual is a community water system that draws from groundwater and serves about 90 people in Clipper Mills, California. Everything above comes from the EPA's Safe Drinking Water Information System (SDWIS), where states report every violation by every public water system.

Four kinds of violation. Only one is a measurement of the water: over the limit means a test came back above a legal maximum (an MCL). A treatment lapse means a required protective step was not done, such as disinfection, filtration, fixing a defect an inspector found, or filing a lead-pipe inventory. A missed or late test means a required test was skipped or never reported. That is the most common kind, and the most misread: it does not mean the water was bad, and it does not mean the water was fine. Notices and reports covers public notices and the annual Consumer Confidence Report.

Status. “Back in compliance” means the state recorded a return to compliance. “Period ended” means the violation's compliance period is over but no return to compliance was ever filed, which is common in older records. EPA's federal copy lags state records by months, so call the utility for anything current.