Community Water System · PWSID CA1900785

Mitchell's Avenue E Mobile Home Park

Serves 24 peopleGroundwaterOwner: PrivateLancaster, California
Nothing open right now.

On record since 2016: 23 violations. 22 over the limit · 1 missed or late test. Most recent began 2024-04-01.

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

22Over the limit
0Treatment lapse
1Missed or late test
0Notice or report

More violations on record than 94% 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

2005201020152016 · Over the limit: 22016 · Over the limit: 22017 · Over the limit: 12018 · Over the limit: 22018 · Over the limit: 22019 · Missed or late test: 12020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 420202021 · Over the limit: 42021 · Over the limit: 42021 · Over the limit: 42021 · Over the limit: 42022 · Over the limit: 32022 · Over the limit: 32022 · Over the limit: 32023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42023 · Over the limit: 42024 · Over the limit: 22024 · Over the limit: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
96% over the limit · 224% missed or late test · 1

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

How far over the limit

at the limit2×5×10×100×+Arsenic2016-04-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2016-01-01 · Arsenic: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)
Each dot is one over-the-limit violation: the measured value divided by the limit it broke, on a log scale. Most legal limits for chemicals are running averages set for a lifetime of drinking, so “just over” and “ten times over” are very different news. Hover a dot for the numbers.

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 2 results on file · action level 15 ppb

0 ppb
0 ppb

Every violation on record

  1. 2024-04-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  2. 2024-01-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  3. 2023-10-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  4. 2023-07-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  5. 2023-04-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  6. 2023-01-01ArsenicMCL, Averagemeasured 22.00 UG/LPeriod ended · no return to compliance on file
  7. 2022-10-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  8. 2022-04-01ArsenicMCL, Averagemeasured 22.00 UG/LPeriod ended · no return to compliance on file
  9. 2022-01-01ArsenicMCL, Averagemeasured 22.00 UG/LPeriod ended · no return to compliance on file
  10. 2021-10-01ArsenicMCL, Averagemeasured 22.00 MG/LPeriod ended · no return to compliance on file
  11. 2021-07-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  12. 2021-04-01ArsenicMCL, Averagemeasured 19.00 UG/LPeriod ended · no return to compliance on file
  13. 2021-01-01ArsenicMCL, Averagemeasured 20.00 UG/LPeriod ended · no return to compliance on file
  14. 2020-10-01ArsenicMCL, Averagemeasured 23.00 UG/LPeriod ended · no return to compliance on file
  15. 2020-07-01ArsenicMCL, Averagemeasured 21.00 UG/LPeriod ended · no return to compliance on file
  16. 2020-04-01ArsenicMCL, Averagemeasured 20.00 UG/LPeriod ended · no return to compliance on file
  17. 2020-01-01ArsenicMCL, Averagemeasured 20.00 UG/LPeriod ended · no return to compliance on file
  18. 2019-01-01NitrateMonitoring, RegularBack in compliance
  19. 2018-07-01ArsenicMCL, Averagemeasured 24.00 UG/LPeriod ended · no return to compliance on file
  20. 2018-04-01ArsenicMCL, Averagemeasured 23.00 UG/LPeriod ended · no return to compliance on file
  21. 2017-10-30ArsenicMCL, Averagemeasured 0.0210 MG/LPeriod ended · no return to compliance on file
  22. 2016-04-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  23. 2016-01-01ArsenicMCL, Averagemeasured 0.0200 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file

System details

Population served24
Service connections24
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityLancaster
EPA ZIP on file93534

Areas served

  • Los Angeles County

Reading this record

Mitchell's Avenue E Mobile Home Park is a community water system that draws from groundwater and serves about 24 people in Lancaster, 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.