Community Water System · PWSID CA1500378

Maher Mutual Water Company

Serves 140 peopleGroundwaterOwner: PrivateBakersfield, California
Nothing open right now.

On record since 1997: 60 violations. 49 over the limit · 6 missed or late tests · 5 notices or reports. Most recent began 2022-01-01.

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

49Over the limit
0Treatment lapse
6Missed or late test
5Notice 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

1997 · Over the limit: 21997 · Over the limit: 21997 · Missed or late test: 11998 · Over the limit: 11999 · Over the limit: 12000 · Over the limit: 120002001 · Missed or late test: 12002 · Over the limit: 12002 · Notice or report: 12003 · Notice or report: 12004 · Notice or report: 12005 · Notice or report: 120052006 · Notice or report: 12008 · Over the limit: 12008 · Missed or late test: 12009 · Over the limit: 42009 · Over the limit: 42009 · Over the limit: 42009 · Over the limit: 42010 · Over the limit: 42010 · Over the limit: 42010 · Over the limit: 42010 · Over the limit: 420102011 · Over the limit: 42011 · Over the limit: 42011 · Over the limit: 42011 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42013 · Over the limit: 42013 · Over the limit: 42013 · Over the limit: 42013 · Over the limit: 42013 · Missed or late test: 12014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Missed or late test: 120152016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42016 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42018 · Over the limit: 42019 · Over the limit: 22019 · Over the limit: 220202022 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
82% over the limit · 4910% missed or late test · 68% notice or report · 5

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×+Arsenic2019-04-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2019-01-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2018-10-01 · Arsenic: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2018-07-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2018-04-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2018-01-01 · Arsenic: measured 0.0220 MG/L vs limit 0.0100 MG/L (2.2×)2017-10-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2017-07-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2017-04-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2017-01-01 · Arsenic: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2016-10-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2016-07-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2016-04-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2016-01-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2015-10-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2015-07-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2015-04-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2015-01-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2014-10-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2014-07-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2014-04-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2014-01-01 · Arsenic: measured 0.0220 MG/L vs limit 0.0100 MG/L (2.2×)2013-10-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2013-07-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2013-04-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2013-01-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2012-10-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2012-07-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2012-04-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2012-01-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2011-10-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2011-07-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2011-04-01 · Arsenic: measured 0.0220 MG/L vs limit 0.0100 MG/L (2.2×)2011-01-01 · Arsenic: measured 0.0220 MG/L vs limit 0.0100 MG/L (2.2×)2010-10-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2010-07-01 · Arsenic: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2010-04-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2010-01-01 · Arsenic: measured 0.0205 MG/L vs limit 0.0100 MG/L (2.0×)2009-10-01 · Arsenic: measured 0.0203 MG/L vs limit 0.0100 MG/L (2.0×)2009-07-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)2009-04-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2009-01-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2008-10-01 · Arsenic: measured 0.0210 MG/L vs limit 0.0100 MG/L (2.1×)
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

2.7 ppb
1.9 ppb
0.8 ppb
0 ppb

Every violation on record

  1. 2022-01-01NitrateMonitoring, RegularBack in compliance
  2. 2019-04-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  3. 2019-01-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  4. 2018-10-01ArsenicMCL, Averagemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  5. 2018-07-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  6. 2018-04-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  7. 2018-01-01ArsenicMCL, Averagemeasured 0.0220 MG/L · limit 0.0100 MG/LBack in compliance
  8. 2017-10-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  9. 2017-07-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2017-04-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  11. 2017-01-01ArsenicMCL, Averagemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  12. 2016-10-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  13. 2016-07-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  14. 2016-04-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LBack in compliance
  15. 2016-01-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  16. 2015-10-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  17. 2015-07-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  18. 2015-04-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  19. 2015-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  20. 2015-01-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LBack in compliance
  21. 2014-10-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  22. 2014-07-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  23. 2014-04-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  24. 2014-01-01ArsenicMCL, Averagemeasured 0.0220 MG/L · limit 0.0100 MG/LBack in compliance
  25. 2013-10-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
Show the other 35 entries
  1. 2013-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  2. 2013-07-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  3. 2013-04-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LBack in compliance
  4. 2013-01-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LBack in compliance
  5. 2012-10-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  6. 2012-07-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LBack in compliance
  7. 2012-04-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  8. 2012-01-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  9. 2011-10-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2011-07-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  11. 2011-04-01ArsenicMCL, Averagemeasured 0.0220 MG/L · limit 0.0100 MG/LBack in compliance
  12. 2011-01-01ArsenicMCL, Averagemeasured 0.0220 MG/L · limit 0.0100 MG/LBack in compliance
  13. 2010-10-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  14. 2010-07-01ArsenicMCL, Averagemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  15. 2010-04-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  16. 2010-01-01ArsenicMCL, Averagemeasured 0.0205 MG/L · limit 0.0100 MG/LBack in compliance
  17. 2009-10-01ArsenicMCL, Averagemeasured 0.0203 MG/L · limit 0.0100 MG/LBack in compliance
  18. 2009-07-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  19. 2009-04-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  20. 2009-01-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LBack in compliance
  21. 2008-10-01ArsenicMonitoring, RegularBack in compliance
  22. 2008-10-01ArsenicMCL, Averagemeasured 0.0210 MG/L · limit 0.0100 MG/LBack in compliance
  23. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  24. 2005-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  25. 2004-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  26. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  27. 2002-12-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  28. 2002-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  29. 2001-07-01Coliform (TCR)Monitoring, Routine Minor (TCR)Back in compliance
  30. 2000-10-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  31. 1999-11-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  32. 1998-02-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  33. 1997-11-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  34. 1997-10-01Coliform (TCR)Monitoring, Repeat Minor (TCR)Back in compliance
  35. 1997-09-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance

System details

Population served140
Service connections50
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityBakersfield
EPA ZIP on file93312

Areas served

  • Kern County

Reading this record

Maher Mutual Water Company is a community water system that draws from groundwater and serves about 140 people in Bakersfield, 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.