Non-Transient Non-Community · PWSID CA2400335

Olivares Farms Water System

Serves 28 peopleGroundwaterOwner: PrivateDelhi, California
Nothing open right now.

On record since 2017: 27 violations. 25 over the limit · 2 notices or reports. Most recent began 2023-04-01.

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

25Over the limit
0Treatment lapse
0Missed or late test
2Notice or report

More violations on record than 95% 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

2005201020152017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Notice or report: 12018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 42020 · Over the limit: 420202021 · Over the limit: 32021 · Over the limit: 32021 · Over the limit: 32021 · Notice or report: 12022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42022 · Over the limit: 42023 · Over the limit: 22023 · Over the limit: 22025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
93% over the limit · 257% 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×+ArsenicNitrate2023-04-01 · Arsenic: measured 0.0590 MG/L vs limit 0.0100 MG/L (5.9×)2023-01-01 · Arsenic: measured 0.0610 MG/L vs limit 0.0100 MG/L (6.1×)2022-10-01 · Arsenic: measured 0.0590 MG/L vs limit 0.0100 MG/L (5.9×)2022-07-01 · Arsenic: measured 61.00 UG/L vs limit 10.00 UG/L (6.1×)2022-04-01 · Arsenic: measured 0.0600 MG/L vs limit 0.0100 MG/L (6.0×)2022-01-01 · Arsenic: measured 61.00 UG/L vs limit 10.00 UG/L (6.1×)2021-07-01 · Arsenic: measured 62.00 UG/L vs limit 10.00 UG/L (6.2×)2021-04-01 · Arsenic: measured 61.00 UG/L vs limit 10.00 UG/L (6.1×)2021-01-01 · Arsenic: measured 59.00 UG/L vs limit 10.00 UG/L (5.9×)2020-10-01 · Arsenic: measured 60.00 UG/L vs limit 10.00 UG/L (6.0×)2020-07-01 · Arsenic: measured 60.00 UG/L vs limit 10.00 UG/L (6.0×)2020-04-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2020-01-01 · Nitrate: measured 31.00 MG/L vs limit 10.00 MG/L (3.1×)2019-10-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2019-07-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2019-04-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2019-01-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2018-10-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2018-07-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2018-04-01 · Nitrate: measured 29.00 MG/L vs limit 10.00 MG/L (2.9×)2018-01-01 · Nitrate: measured 28.00 MG/L vs limit 10.00 MG/L (2.8×)2017-10-01 · Nitrate: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2017-07-01 · Nitrate: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2017-04-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2017-01-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)
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 4 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2023-04-01ArsenicMCL, Averagemeasured 0.0590 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  2. 2023-01-01ArsenicMCL, Averagemeasured 0.0610 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  3. 2022-10-01ArsenicMCL, Averagemeasured 0.0590 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  4. 2022-07-01ArsenicMCL, Averagemeasured 61.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  5. 2022-04-01ArsenicMCL, Averagemeasured 0.0600 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  6. 2022-01-01ArsenicMCL, Averagemeasured 61.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  7. 2021-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  8. 2021-07-01ArsenicMCL, Averagemeasured 62.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  9. 2021-04-01ArsenicMCL, Averagemeasured 61.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  10. 2021-01-01ArsenicMCL, Averagemeasured 59.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  11. 2020-10-01ArsenicMCL, Averagemeasured 60.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  12. 2020-07-01ArsenicMCL, Averagemeasured 60.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  13. 2020-04-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  14. 2020-01-01NitrateMCL, Single Samplemeasured 31.00 MG/L · limit 10.00 MG/LBack in compliance
  15. 2019-10-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  16. 2019-07-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  17. 2019-04-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  18. 2019-01-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  19. 2018-10-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  20. 2018-07-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  21. 2018-04-01NitrateMCL, Single Samplemeasured 29.00 MG/L · limit 10.00 MG/LBack in compliance
  22. 2018-01-01NitrateMCL, Single Samplemeasured 28.00 MG/L · limit 10.00 MG/LBack in compliance
  23. 2017-10-01NitrateMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LBack in compliance
  24. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  25. 2017-07-01NitrateMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LBack in compliance
Show the other 2 entries
  1. 2017-04-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LBack in compliance
  2. 2017-01-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LBack in compliance

System details

Population served28
Service connections5
Water sourceGroundwater
System typeNon-Transient Non-Community
OwnerPrivate
StatusActive
CityDelhi
EPA ZIP on file95315

Areas served

  • Merced County

Reading this record

Olivares Farms Water System is a non-transient non-community that draws from groundwater and serves about 28 people in Delhi, 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.