Community Water System · PWSID CA2000526

Pike Ranch Mutual Water Co

Serves 74 peopleGroundwaterOwner: PrivateOakhurst, California
1 open treatment violation.

Open for: Lead service line inventory. EPA counts treatment-technique violations as health-based: a required protective step was not done. It is not a measurement of contamination.

On record since 2007: 69 violations. 12 over the limit · 1 treatment lapse · 54 missed or late tests · 2 notices or reports. Most recent began 2024-10-17.

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

12Over the limit
1Treatment lapse1 open
54Missed or late test
2Notice or report1 open

More violations on record than 99% 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

20052007 · Over the limit: 12009 · Over the limit: 12010 · Over the limit: 120102011 · Over the limit: 32013 · Missed or late test: 120152016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432016 · Missed or late test: 432017 · Notice or report: 12018 · Over the limit: 12018 · Missed or late test: 52018 · Missed or late test: 52020 · Over the limit: 22020 · Missed or late test: 120202021 · Over the limit: 12022 · Over the limit: 12022 · Missed or late test: 12023 · Over the limit: 12024 · Treatment lapse: 12024 · Missed or late test: 32024 · Notice or report: 12025
One square ≈ 4 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
17% over the limit · 121% treatment lapse · 178% missed or late test · 543% notice or report · 2

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×+Combined UraniumGross Alpha Particle Activity2023-01-01 · Combined Uranium: measured 34.05 PCI/L vs limit 20.00 PCI/L (1.7×)2022-01-01 · Combined Uranium: measured 40.00 PCI/L vs limit 20.00 PCI/L (2.0×)2021-01-01 · Combined Uranium: measured 96.95 PCI/L vs limit 20.00 PCI/L (4.8×)2020-01-01 · Combined Uranium: measured 54.53 PCI/L vs limit 20.00 PCI/L (2.7×)2018-07-01 · Combined Uranium: measured 80.00 PCI/L vs limit 20.00 PCI/L (4.0×)2011-10-01 · Combined Uranium: measured 62.18 PCI/L vs limit 20.00 PCI/L (3.1×)2011-04-01 · Combined Uranium: measured 56.25 PCI/L vs limit 20.00 PCI/L (2.8×)2011-01-01 · Combined Uranium: measured 73.38 PCI/L vs limit 20.00 PCI/L (3.7×)2010-10-01 · Combined Uranium: measured 77.83 PCI/L vs limit 20.00 PCI/L (3.9×)2009-01-01 · Gross Alpha Particle Activity: measured 102.00 PCI/L vs limit 15.00 PCI/L (6.8×)2007-10-01 · Combined Uranium: measured 168.79 PCI/L vs limit 20.00 PCI/L (8.4×)
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 3 results on file · action level 15 ppb

13 ppb
7.2 ppb
0 ppb

Open now (2)

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen

Every violation on record

  1. 2024-10-17Lead service line inventoryRPTOpen
  2. 2024-10-17Lead service line inventoryTTOpen
  3. 2024-10-01Combined UraniumMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2024-10-01Gross Alpha Particle ActivityMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2024-01-01NitrateMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2023-01-01Combined UraniumMCL, Averagemeasured 34.05 PCI/L · limit 20.00 PCI/LPeriod ended · no return to compliance on file
  7. 2022-01-01Combined UraniumMCL, Averagemeasured 40.00 PCI/L · limit 20.00 PCI/LPeriod ended · no return to compliance on file
  8. 2022-01-01Combined UraniumMonitoring, RegularBack in compliance
  9. 2021-01-01Combined UraniumMCL, Averagemeasured 96.95 PCI/L · limit 20.00 PCI/LPeriod ended · no return to compliance on file
  10. 2020-08-01Revised Total Coliform RuleMCLBack in compliance
  11. 2020-01-01Combined UraniumMCL, Averagemeasured 54.53 PCI/L · limit 20.00 PCI/LPeriod ended · no return to compliance on file
  12. 2020-01-01Combined UraniumMonitoring, RegularBack in compliance
  13. 2018-10-01Combined UraniumMonitoring, RegularBack in compliance
  14. 2018-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  15. 2018-07-01Combined UraniumMCL, Single Samplemeasured 80.00 PCI/L · limit 20.00 PCI/LPeriod ended · no return to compliance on file
  16. 2018-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  17. 2018-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  18. 2018-01-01Nitrate-NitriteMonitoring, RegularBack in compliance
  19. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  20. 2016-07-01Combined UraniumMonitoring, RegularBack in compliance
  21. 2016-01-01StyreneMonitoring, RegularBack in compliance
  22. 2016-01-01EthylbenzeneMonitoring, RegularBack in compliance
  23. 2016-01-01TolueneMonitoring, RegularBack in compliance
  24. 2016-01-01BenzeneMonitoring, RegularBack in compliance
  25. 2016-01-01ChlorobenzeneMonitoring, RegularBack in compliance
Show the other 44 entries
  1. 2016-01-011,1,2,2-TetrachloroethaneMonitoring, RegularBack in compliance
  2. 2016-01-01TetrachloroethyleneMonitoring, RegularBack in compliance
  3. 2016-01-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  4. 2016-01-01TrichloroethyleneMonitoring, RegularBack in compliance
  5. 2016-01-011,2-DichloropropaneMonitoring, RegularBack in compliance
  6. 2016-01-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  7. 2016-01-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  8. 2016-01-011,2-DichloroethaneMonitoring, RegularBack in compliance
  9. 2016-01-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  10. 2016-01-011,1-DichloroethaneMonitoring, RegularBack in compliance
  11. 2016-01-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  12. 2016-01-01Vinyl chlorideMonitoring, RegularBack in compliance
  13. 2016-01-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  14. 2016-01-01o-DichlorobenzeneMonitoring, RegularBack in compliance
  15. 2016-01-01DichloromethaneMonitoring, RegularBack in compliance
  16. 2016-01-01Xylenes, TotalMonitoring, RegularBack in compliance
  17. 2016-01-01TrichlorotrifluoroethaneMonitoring, RegularBack in compliance
  18. 2016-01-011, 3-DichloropropeneMonitoring, RegularBack in compliance
  19. 2016-01-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  20. 2016-01-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  21. 2016-01-01Methyl Tert-Butyl EtherMonitoring, RegularBack in compliance
  22. 2016-01-01TrichlorofluoromethaneMonitoring, RegularBack in compliance
  23. 2016-01-01PerchlorateMonitoring, RegularBack in compliance
  24. 2016-01-01SeleniumMonitoring, RegularBack in compliance
  25. 2016-01-01Thallium, TotalMonitoring, RegularBack in compliance
  26. 2016-01-01Beryllium, TotalMonitoring, RegularBack in compliance
  27. 2016-01-01Antimony, TotalMonitoring, RegularBack in compliance
  28. 2016-01-01NitriteMonitoring, RegularBack in compliance
  29. 2016-01-01NickelMonitoring, RegularBack in compliance
  30. 2016-01-01MercuryMonitoring, RegularBack in compliance
  31. 2016-01-01FluorideMonitoring, RegularBack in compliance
  32. 2016-01-01ChromiumMonitoring, RegularBack in compliance
  33. 2016-01-01CadmiumMonitoring, RegularBack in compliance
  34. 2016-01-01BariumMonitoring, RegularBack in compliance
  35. 2016-01-01ArsenicMonitoring, RegularBack in compliance
  36. 2016-01-01AluminumMonitoring, RegularBack in compliance
  37. 2016-01-01Combined UraniumMonitoring, RegularBack in compliance
  38. 2013-01-01Gross Alpha Particle ActivityMonitoring, RegularBack in compliance
  39. 2011-10-01Combined UraniumMCL, Averagemeasured 62.18 PCI/L · limit 20.00 PCI/LBack in compliance
  40. 2011-04-01Combined UraniumMCL, Averagemeasured 56.25 PCI/L · limit 20.00 PCI/LBack in compliance
  41. 2011-01-01Combined UraniumMCL, Averagemeasured 73.38 PCI/L · limit 20.00 PCI/LBack in compliance
  42. 2010-10-01Combined UraniumMCL, Averagemeasured 77.83 PCI/L · limit 20.00 PCI/LBack in compliance
  43. 2009-01-01Gross Alpha Particle ActivityMCL, Single Samplemeasured 102.00 PCI/L · limit 15.00 PCI/LBack in compliance
  44. 2007-10-01Combined UraniumMCL, Averagemeasured 168.79 PCI/L · limit 20.00 PCI/LBack in compliance

System details

Population served74
Service connections20
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityOakhurst
EPA ZIP on file93644

Areas served

  • Madera County

Reading this record

Pike Ranch Mutual Water Co is a community water system that draws from groundwater and serves about 74 people in Oakhurst, 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.