Community Water System · PWSID CA2700738

San Miguel Ws #01

Serves 100 peopleGroundwaterOwner: PrivateRoyal Oaks, California
Nothing open that measures the water, but 1 open testing or paperwork violation.

A missed test is not evidence of bad water. It also is not evidence of good water: for that period nobody checked.

On record since 2003: 68 violations. 58 over the limit · 9 missed or late tests · 1 notice or report. Most recent began 2021-10-01.

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

58Over the limit
0Treatment lapse
9Missed or late test1 open
1Notice 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

2003 · Missed or late test: 12005 · Over the limit: 120052006 · Over the limit: 42006 · Over the limit: 42006 · Over the limit: 42006 · Over the limit: 42006 · Missed or late test: 32006 · Missed or late test: 32006 · Missed or late test: 32007 · Over the limit: 42007 · Over the limit: 42007 · Over the limit: 42007 · Over the limit: 42007 · Missed or late test: 22007 · Missed or late test: 22008 · Over the limit: 52008 · Over the limit: 52008 · Over the limit: 52008 · Over the limit: 52008 · Over the limit: 52008 · Missed or late test: 12009 · Over the limit: 32009 · Over the limit: 32009 · Over the limit: 32009 · Missed or late test: 12010 · Over the limit: 42010 · Over the limit: 42010 · Over the limit: 42010 · Over the limit: 42010 · Notice or report: 120102011 · Over the limit: 52011 · Over the limit: 52011 · Over the limit: 52011 · Over the limit: 52011 · Over the limit: 52012 · 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: 42014 · Over the limit: 32014 · Over the limit: 32014 · Over the limit: 32015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 420152016 · 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: 42019 · Over the limit: 42019 · Over the limit: 42019 · Over the limit: 42020 · Over the limit: 120202021 · Missed or late test: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
85% over the limit · 5813% missed or late test · 91% notice or report · 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×+Nitrate2020-01-01 · Nitrate: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2019-10-01 · Nitrate: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2019-07-01 · Nitrate: measured 27.00 MG/L vs limit 10.00 MG/L (2.7×)2019-04-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2019-01-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2018-10-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2018-07-01 · Nitrate: measured 26.00 MG/L vs limit 10.00 MG/L (2.6×)2018-04-01 · Nitrate: measured 24.00 MG/L vs limit 10.00 MG/L (2.4×)2018-01-01 · Nitrate: measured 24.00 MG/L vs limit 10.00 MG/L (2.4×)2017-10-01 · Nitrate: measured 23.00 MG/L vs limit 10.00 MG/L (2.3×)2017-07-01 · Nitrate: measured 23.00 MG/L vs limit 10.00 MG/L (2.3×)2017-04-01 · Nitrate: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2017-01-01 · Nitrate: measured 0.0200 MG/L vs limit 0.0100 MG/L (2.0×)2016-10-01 · Nitrate: measured 20.00 MG/L vs limit 10.00 MG/L (2.0×)2016-07-01 · Nitrate: measured 20.00 MG/L vs limit 10.00 MG/L (2.0×)2016-04-01 · Nitrate: measured 16.00 MG/L vs limit 10.00 MG/L (1.6×)2016-01-01 · Nitrate: measured 16.00 MG/L vs limit 10.00 MG/L (1.6×)2015-10-01 · Nitrate: measured 16.00 MG/L vs limit 10.00 MG/L (1.6×)2015-07-01 · Nitrate: measured 18.00 MG/L vs limit 10.00 MG/L (1.8×)2015-04-01 · Nitrate: measured 96.00 MG/L vs limit 45.00 MG/L (2.1×)2015-01-01 · Nitrate: measured 90.00 MG/L vs limit 45.00 MG/L (2.0×)2014-07-01 · Nitrate: measured 86.00 MG/L vs limit 45.00 MG/L (1.9×)2014-04-01 · Nitrate: measured 65.00 MG/L vs limit 45.00 MG/L (1.4×)2014-01-01 · Nitrate: measured 86.00 MG/L vs limit 45.00 MG/L (1.9×)2013-10-01 · Nitrate: measured 76.00 MG/L vs limit 45.00 MG/L (1.7×)2013-07-01 · Nitrate: measured 68.00 MG/L vs limit 45.00 MG/L (1.5×)2013-04-01 · Nitrate: measured 72.00 MG/L vs limit 45.00 MG/L (1.6×)2013-01-01 · Nitrate: measured 74.00 MG/L vs limit 45.00 MG/L (1.6×)2012-10-01 · Nitrate: measured 73.00 MG/L vs limit 45.00 MG/L (1.6×)2012-07-01 · Nitrate: measured 79.00 MG/L vs limit 45.00 MG/L (1.8×)2012-04-01 · Nitrate: measured 73.00 MG/L vs limit 45.00 MG/L (1.6×)2012-01-01 · Nitrate: measured 63.00 MG/L vs limit 45.00 MG/L (1.4×)2011-12-01 · Nitrate: measured 58.00 MG/L vs limit 45.00 MG/L (1.3×)2011-11-01 · Nitrate: measured 57.00 MG/L vs limit 45.00 MG/L (1.3×)2011-07-01 · Nitrate: measured 62.00 MG/L vs limit 45.00 MG/L (1.4×)2011-04-01 · Nitrate: measured 64.00 MG/L vs limit 45.00 MG/L (1.4×)2011-02-01 · Nitrate: measured 57.00 MG/L vs limit 45.00 MG/L (1.3×)2010-11-01 · Nitrate: measured 58.00 MG/L vs limit 45.00 MG/L (1.3×)2010-09-01 · Nitrate: measured 59.00 MG/L vs limit 45.00 MG/L (1.3×)2010-05-01 · Nitrate: measured 60.00 MG/L vs limit 45.00 MG/L (1.3×)2010-02-01 · Nitrate: measured 54.00 MG/L vs limit 45.00 MG/L (1.2×)2009-11-01 · Nitrate: measured 57.00 MG/L vs limit 45.00 MG/L (1.3×)2009-09-01 · Nitrate: measured 57.00 MG/L vs limit 45.00 MG/L (1.3×)2009-01-01 · Nitrate: measured 57.00 MG/L vs limit 45.00 MG/L (1.3×)2008-10-01 · Nitrate: measured 68.00 MG/L vs limit 45.00 MG/L (1.5×)2008-08-01 · Nitrate: measured 48.00 MG/L vs limit 45.00 MG/L (1.1×)2008-04-01 · Nitrate: measured 47.00 MG/L vs limit 45.00 MG/L (1.0×)2008-04-01 · Nitrate: measured 48.00 MG/L vs limit 45.00 MG/L (1.1×)2008-01-01 · Nitrate: measured 50.00 MG/L vs limit 45.00 MG/L (1.1×)2007-11-01 · Nitrate: measured 56.00 MG/L vs limit 45.00 MG/L (1.2×)2007-09-01 · Nitrate: measured 56.00 MG/L vs limit 45.00 MG/L (1.2×)2007-05-01 · Nitrate: measured 46.00 MG/L vs limit 45.00 MG/L (1.0×)2007-05-01 · Nitrate: measured 49.00 MG/L vs limit 45.00 MG/L (1.1×)2006-10-01 · Nitrate: measured 49.00 MG/L vs limit 45.00 MG/L (1.1×)2006-08-01 · Nitrate: measured 46.00 MG/L vs limit 45.00 MG/L (1.0×)2006-04-01 · Nitrate: measured 50.00 MG/L vs limit 45.00 MG/L (1.1×)2006-01-01 · Nitrate: measured 54.00 MG/L vs limit 45.00 MG/L (1.2×)2005-11-01 · Nitrate: measured 48.00 MG/L vs limit 45.00 MG/L (1.1×)
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 6 results on file · action level 15 ppb

0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Open now (1)

  1. 2021-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen

Every violation on record

  1. 2021-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/ROpen
  2. 2020-01-01NitrateMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LBack in compliance
  3. 2019-10-01NitrateMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LBack in compliance
  4. 2019-07-01NitrateMCL, Single Samplemeasured 27.00 MG/L · limit 10.00 MG/LBack in compliance
  5. 2019-04-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LBack in compliance
  6. 2019-01-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LBack in compliance
  7. 2018-10-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LBack in compliance
  8. 2018-07-01NitrateMCL, Single Samplemeasured 26.00 MG/L · limit 10.00 MG/LBack in compliance
  9. 2018-04-01NitrateMCL, Single Samplemeasured 24.00 MG/L · limit 10.00 MG/LBack in compliance
  10. 2018-01-01NitrateMCL, Single Samplemeasured 24.00 MG/L · limit 10.00 MG/LBack in compliance
  11. 2017-10-01NitrateMCL, Single Samplemeasured 23.00 MG/L · limit 10.00 MG/LBack in compliance
  12. 2017-07-01NitrateMCL, Single Samplemeasured 23.00 MG/L · limit 10.00 MG/LBack in compliance
  13. 2017-04-01NitrateMCL, Single Samplemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  14. 2017-01-01NitrateMCL, Single Samplemeasured 0.0200 MG/L · limit 0.0100 MG/LBack in compliance
  15. 2016-10-01NitrateMCL, Single Samplemeasured 20.00 MG/L · limit 10.00 MG/LBack in compliance
  16. 2016-07-01NitrateMCL, Single Samplemeasured 20.00 MG/L · limit 10.00 MG/LBack in compliance
  17. 2016-04-01NitrateMCL, Single Samplemeasured 16.00 MG/L · limit 10.00 MG/LBack in compliance
  18. 2016-01-01NitrateMCL, Single Samplemeasured 16.00 MG/L · limit 10.00 MG/LBack in compliance
  19. 2015-10-01NitrateMCL, Single Samplemeasured 16.00 MG/L · limit 10.00 MG/LBack in compliance
  20. 2015-07-01NitrateMCL, Single Samplemeasured 18.00 MG/L · limit 10.00 MG/LBack in compliance
  21. 2015-04-01NitrateMCL, Single Samplemeasured 96.00 MG/L · limit 45.00 MG/LBack in compliance
  22. 2015-01-01NitrateMCL, Single Samplemeasured 90.00 MG/L · limit 45.00 MG/LBack in compliance
  23. 2014-07-01NitrateMCL, Single Samplemeasured 86.00 MG/L · limit 45.00 MG/LBack in compliance
  24. 2014-04-01NitrateMCL, Single Samplemeasured 65.00 MG/L · limit 45.00 MG/LBack in compliance
  25. 2014-01-01NitrateMCL, Single Samplemeasured 86.00 MG/L · limit 45.00 MG/LBack in compliance
Show the other 43 entries
  1. 2013-10-01NitrateMCL, Single Samplemeasured 76.00 MG/L · limit 45.00 MG/LBack in compliance
  2. 2013-07-01NitrateMCL, Single Samplemeasured 68.00 MG/L · limit 45.00 MG/LBack in compliance
  3. 2013-04-01NitrateMCL, Single Samplemeasured 72.00 MG/L · limit 45.00 MG/LBack in compliance
  4. 2013-01-01NitrateMCL, Single Samplemeasured 74.00 MG/L · limit 45.00 MG/LBack in compliance
  5. 2012-10-01NitrateMCL, Single Samplemeasured 73.00 MG/L · limit 45.00 MG/LBack in compliance
  6. 2012-07-01NitrateMCL, Single Samplemeasured 79.00 MG/L · limit 45.00 MG/LBack in compliance
  7. 2012-04-01NitrateMCL, Single Samplemeasured 73.00 MG/L · limit 45.00 MG/LBack in compliance
  8. 2012-01-01NitrateMCL, Averagemeasured 63.00 MG/L · limit 45.00 MG/LBack in compliance
  9. 2011-12-01NitrateMCL, Single Samplemeasured 58.00 MG/L · limit 45.00 MG/LBack in compliance
  10. 2011-11-01NitrateMCL, Single Samplemeasured 57.00 MG/L · limit 45.00 MG/LBack in compliance
  11. 2011-07-01NitrateMCL, Averagemeasured 62.00 MG/L · limit 45.00 MG/LBack in compliance
  12. 2011-04-01NitrateMCL, Averagemeasured 64.00 MG/L · limit 45.00 MG/LBack in compliance
  13. 2011-02-01NitrateMCL, Single Samplemeasured 57.00 MG/L · limit 45.00 MG/LBack in compliance
  14. 2010-11-01NitrateMCL, Averagemeasured 58.00 MG/L · limit 45.00 MG/LBack in compliance
  15. 2010-09-01NitrateMCL, Single Samplemeasured 59.00 MG/L · limit 45.00 MG/LBack in compliance
  16. 2010-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  17. 2010-05-01NitrateMCL, Single Samplemeasured 60.00 MG/L · limit 45.00 MG/LBack in compliance
  18. 2010-02-01NitrateMCL, Single Samplemeasured 54.00 MG/L · limit 45.00 MG/LBack in compliance
  19. 2009-11-01NitrateMCL, Single Samplemeasured 57.00 MG/L · limit 45.00 MG/LBack in compliance
  20. 2009-09-01NitrateMCL, Single Samplemeasured 57.00 MG/L · limit 45.00 MG/LBack in compliance
  21. 2009-03-01NitrateMonitoring, Check/Repeat/ConfirmationBack in compliance
  22. 2009-01-01NitrateMCL, Single Samplemeasured 57.00 MG/L · limit 45.00 MG/LBack in compliance
  23. 2008-10-01NitrateMCL, Single Samplemeasured 68.00 MG/L · limit 45.00 MG/LBack in compliance
  24. 2008-08-01NitrateMCL, Single Samplemeasured 48.00 MG/L · limit 45.00 MG/LBack in compliance
  25. 2008-05-01NitrateMonitoring, RegularBack in compliance
  26. 2008-04-01NitrateMCL, Averagemeasured 47.00 MG/L · limit 45.00 MG/LBack in compliance
  27. 2008-04-01NitrateMCL, Single Samplemeasured 48.00 MG/L · limit 45.00 MG/LBack in compliance
  28. 2008-01-01NitrateMCL, Single Samplemeasured 50.00 MG/L · limit 45.00 MG/LBack in compliance
  29. 2007-11-01NitrateMonitoring, Check/Repeat/ConfirmationBack in compliance
  30. 2007-11-01NitrateMCL, Single Samplemeasured 56.00 MG/L · limit 45.00 MG/LBack in compliance
  31. 2007-09-01NitrateMCL, Single Samplemeasured 56.00 MG/L · limit 45.00 MG/LBack in compliance
  32. 2007-06-01NitrateMonitoring, Check/Repeat/ConfirmationBack in compliance
  33. 2007-05-01NitrateMCL, Averagemeasured 46.00 MG/L · limit 45.00 MG/LBack in compliance
  34. 2007-05-01NitrateMCL, Single Samplemeasured 49.00 MG/L · limit 45.00 MG/LBack in compliance
  35. 2006-11-01NitrateMonitoring, Check/Repeat/ConfirmationBack in compliance
  36. 2006-10-01NitrateMonitoring, Check/Repeat/ConfirmationBack in compliance
  37. 2006-10-01NitrateMCL, Single Samplemeasured 49.00 MG/L · limit 45.00 MG/LBack in compliance
  38. 2006-08-01NitrateMCL, Single Samplemeasured 46.00 MG/L · limit 45.00 MG/LBack in compliance
  39. 2006-04-01NitrateMonitoring, Check/Repeat/ConfirmationBack in compliance
  40. 2006-04-01NitrateMCL, Single Samplemeasured 50.00 MG/L · limit 45.00 MG/LBack in compliance
  41. 2006-01-01NitrateMCL, Single Samplemeasured 54.00 MG/L · limit 45.00 MG/LBack in compliance
  42. 2005-11-01NitrateMCL, Single Samplemeasured 48.00 MG/L · limit 45.00 MG/LBack in compliance
  43. 2003-04-01NitrateMonitoring, RegularBack in compliance

System details

Population served100
Service connections34
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityRoyal Oaks
EPA ZIP on file95076

Areas served

  • Monterey County

Reading this record

San Miguel Ws #01 is a community water system that draws from groundwater and serves about 100 people in Royal Oaks, 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.