Transient Non-Community · PWSID CA4100502

Uc Elkus Ranch

Serves 34 peopleSurface WaterOwner: StateHalf Moon Bay, California
Nothing open right now.

On record since 1981: 57 violations. 1 treatment lapse · 32 missed or late tests · 24 notices or reports. Most recent began 2018-09-01.

None of them is a measurement of contaminated water.

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

0Over the limit
1Treatment lapse
32Missed or late test
24Notice or report

More violations on record than 98% 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

1981 · Missed or late test: 21982 · Missed or late test: 31982 · Notice or report: 31983 · Missed or late test: 131983 · Missed or late test: 131983 · Missed or late test: 131983 · Missed or late test: 131983 · Missed or late test: 131983 · Notice or report: 121983 · Notice or report: 121983 · Notice or report: 121983 · Notice or report: 121984 · Missed or late test: 101984 · Missed or late test: 101984 · Missed or late test: 101984 · Missed or late test: 101984 · Notice or report: 91984 · Notice or report: 91984 · Notice or report: 919851988 · Missed or late test: 1199019951996 · Missed or late test: 220002004 · Treatment lapse: 12005201020152018 · Missed or late test: 120202025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
2% treatment lapse · 156% missed or late test · 3242% notice or report · 24

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

Every violation on record

  1. 2018-09-01Revised Total Coliform RuleMONBack in compliance
  2. 2004-06-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  3. 1996-07-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  4. 1996-04-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  5. 1988-01-31Coliform (Pre-TCR)Monitoring, RegularSystem inactive
  6. 1984-09-01Unknown contaminantNotification, PublicSystem inactive
  7. 1984-09-01TurbidityMonitoring, RegularSystem inactive
  8. 1984-08-01Coliform (Pre-TCR)Monitoring, RegularSystem inactive
  9. 1984-08-01Unknown contaminantNotification, PublicSystem inactive
  10. 1984-08-01TurbidityMonitoring, RegularSystem inactive
  11. 1984-07-01Unknown contaminantNotification, PublicSystem inactive
  12. 1984-07-01TurbidityMonitoring, RegularSystem inactive
  13. 1984-06-01Unknown contaminantNotification, PublicSystem inactive
  14. 1984-06-01TurbidityMonitoring, RegularSystem inactive
  15. 1984-05-01Unknown contaminantNotification, PublicSystem inactive
  16. 1984-05-01TurbidityMonitoring, RegularSystem inactive
  17. 1984-04-01Unknown contaminantNotification, PublicSystem inactive
  18. 1984-04-01TurbidityMonitoring, RegularSystem inactive
  19. 1984-03-01Unknown contaminantNotification, PublicSystem inactive
  20. 1984-03-01TurbidityMonitoring, RegularSystem inactive
  21. 1984-02-01Unknown contaminantNotification, PublicSystem inactive
  22. 1984-02-01TurbidityMonitoring, RegularSystem inactive
  23. 1984-01-01Unknown contaminantNotification, PublicSystem inactive
  24. 1984-01-01TurbidityMonitoring, RegularSystem inactive
  25. 1983-12-01Unknown contaminantNotification, PublicSystem inactive
Show the other 32 entries
  1. 1983-12-01TurbidityMonitoring, RegularSystem inactive
  2. 1983-12-01Coliform (Pre-TCR)Monitoring, RegularSystem inactive
  3. 1983-11-01Unknown contaminantNotification, PublicSystem inactive
  4. 1983-11-01TurbidityMonitoring, RegularSystem inactive
  5. 1983-10-01Unknown contaminantNotification, PublicSystem inactive
  6. 1983-10-01TurbidityMonitoring, RegularSystem inactive
  7. 1983-09-01Unknown contaminantNotification, PublicSystem inactive
  8. 1983-09-01TurbidityMonitoring, RegularSystem inactive
  9. 1983-08-01Unknown contaminantNotification, PublicSystem inactive
  10. 1983-08-01TurbidityMonitoring, RegularSystem inactive
  11. 1983-07-01Unknown contaminantNotification, PublicSystem inactive
  12. 1983-07-01TurbidityMonitoring, RegularSystem inactive
  13. 1983-06-01Unknown contaminantNotification, PublicSystem inactive
  14. 1983-06-01TurbidityMonitoring, RegularSystem inactive
  15. 1983-05-01Unknown contaminantNotification, PublicSystem inactive
  16. 1983-05-01TurbidityMonitoring, RegularSystem inactive
  17. 1983-04-01Unknown contaminantNotification, PublicSystem inactive
  18. 1983-04-01TurbidityMonitoring, RegularSystem inactive
  19. 1983-03-01Unknown contaminantNotification, PublicSystem inactive
  20. 1983-03-01TurbidityMonitoring, RegularSystem inactive
  21. 1983-02-01Unknown contaminantNotification, PublicSystem inactive
  22. 1983-02-01TurbidityMonitoring, RegularSystem inactive
  23. 1983-01-01Unknown contaminantNotification, PublicSystem inactive
  24. 1983-01-01TurbidityMonitoring, RegularSystem inactive
  25. 1982-12-01Unknown contaminantNotification, PublicSystem inactive
  26. 1982-12-01TurbidityMonitoring, RegularSystem inactive
  27. 1982-11-01Unknown contaminantNotification, PublicSystem inactive
  28. 1982-11-01TurbidityMonitoring, RegularSystem inactive
  29. 1982-10-01Unknown contaminantNotification, PublicSystem inactive
  30. 1982-10-01TurbidityMonitoring, RegularSystem inactive
  31. 1981-10-01TurbidityMonitoring, RegularSystem inactive
  32. 1981-10-01Coliform (Pre-TCR)Monitoring, RegularSystem inactive

System details

Population served34
Service connections6
Water sourceSurface Water
System typeTransient Non-Community
OwnerState
StatusActive
CityHalf Moon Bay
EPA ZIP on file94019

Areas served

  • San Mateo County

Reading this record

Uc Elkus Ranch is a transient non-community that draws from surface water and serves about 34 people in Half Moon Bay, 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.