Transient Non-Community · PWSID CA0300088

Black Chasm Cavern

Serves 115 peopleGroundwaterOwner: PrivateAngels Camp, California
Nothing open right now.

On record since 2018: 5 violations. 1 over the limit · 4 missed or late tests. Most recent began 2021-11-01.

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
4Missed or late test
0Notice or report

More violations on record than 76% 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

2005201020152018 · Missed or late test: 12020 · Missed or late test: 22020 · Missed or late test: 220202021 · Over the limit: 12021 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
20% over the limit · 180% missed or late test · 4

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

Every violation on record

  1. 2021-11-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  2. 2021-11-01Revised Total Coliform RuleMCLBack in compliance
  3. 2020-10-01Revised Total Coliform RuleMONBack in compliance
  4. 2020-01-01NitrateMonitoring, RegularBack in compliance
  5. 2018-12-31NitriteMonitoring, RegularBack in compliance

System details

Population served115
Service connections2
Water sourceGroundwater
System typeTransient Non-Community
OwnerPrivate
StatusActive
CityAngels Camp
EPA ZIP on file95222

Areas served

  • Amador County

Reading this record

Black Chasm Cavern is a transient non-community that draws from groundwater and serves about 115 people in Angels Camp, 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.