Community Water System · PWSID CA1009039

Pappas & Co (Mendota)

Serves 36 peopleSurface WaterOwner: PrivateFresno, 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 2008: 78 violations. 63 over the limit · 13 treatment lapses · 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.

63Over the limit
13Treatment lapse1 open
0Missed 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

20052008 · Over the limit: 52008 · Over the limit: 52008 · Over the limit: 52008 · Over the limit: 52008 · Over the limit: 52009 · 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: 42010 · Treatment lapse: 42010 · Treatment lapse: 42010 · Treatment lapse: 42010 · Treatment lapse: 420102011 · Over the limit: 32011 · Over the limit: 32011 · Over the limit: 32011 · Treatment lapse: 32011 · Treatment lapse: 32011 · Treatment lapse: 32012 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Treatment lapse: 12013 · 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: 32014 · Treatment lapse: 22014 · Treatment lapse: 22015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Over the limit: 42015 · Treatment lapse: 22015 · Treatment lapse: 22015 · Notice or report: 120152016 · Over the limit: 32016 · Over the limit: 32016 · Over the limit: 32017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42017 · Over the limit: 42018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72018 · Over the limit: 72019 · Over the limit: 72019 · Over the limit: 72019 · Over the limit: 72019 · Over the limit: 72019 · Over the limit: 72019 · Over the limit: 72019 · Over the limit: 72020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 82020 · Over the limit: 820202021 · Over the limit: 32021 · Over the limit: 32021 · Over the limit: 32024 · Treatment lapse: 12024 · Notice or report: 12025
One square = one violation, by the year it began. Empty columns are years with nothing on EPA's record.
81% over the limit · 6317% treatment lapse · 133% 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×+Trihalomethanes (TTHM)Total Haloacetic Acids (HAA5)2021-04-01 · Trihalomethanes (TTHM): measured 0.1410 MG/L vs limit 0.0800 MG/L (1.8×)2021-01-01 · Trihalomethanes (TTHM): measured 0.1610 MG/L vs limit 0.0800 MG/L (2.0×)2021-01-01 · Total Haloacetic Acids (HAA5): measured 0.0640 MG/L vs limit 0.0600 MG/L (1.1×)2020-10-01 · Trihalomethanes (TTHM): measured 0.1780 MG/L vs limit 0.0800 MG/L (2.2×)2020-10-01 · Total Haloacetic Acids (HAA5): measured 0.0710 MG/L vs limit 0.0600 MG/L (1.2×)2020-07-01 · Trihalomethanes (TTHM): measured 0.1530 MG/L vs limit 0.0800 MG/L (1.9×)2020-07-01 · Total Haloacetic Acids (HAA5): measured 0.0670 MG/L vs limit 0.0600 MG/L (1.1×)2020-04-01 · Trihalomethanes (TTHM): measured 0.1200 MG/L vs limit 0.0800 MG/L (1.5×)2020-04-01 · Total Haloacetic Acids (HAA5): measured 0.0680 MG/L vs limit 0.0600 MG/L (1.1×)2020-01-01 · Trihalomethanes (TTHM): measured 0.1350 MG/L vs limit 0.0800 MG/L (1.7×)2020-01-01 · Total Haloacetic Acids (HAA5): measured 0.0800 MG/L vs limit 0.0600 MG/L (1.3×)2019-10-01 · Total Haloacetic Acids (HAA5): measured 0.0780 MG/L vs limit 0.0600 MG/L (1.3×)2019-10-01 · Trihalomethanes (TTHM): measured 0.1480 MG/L vs limit 0.0800 MG/L (1.8×)2019-07-01 · Trihalomethanes (TTHM): measured 0.1750 MG/L vs limit 0.0800 MG/L (2.2×)2019-07-01 · Total Haloacetic Acids (HAA5): measured 0.0800 MG/L vs limit 0.0600 MG/L (1.3×)2019-04-01 · Total Haloacetic Acids (HAA5): measured 0.0690 MG/L vs limit 0.0600 MG/L (1.2×)2019-04-01 · Trihalomethanes (TTHM): measured 0.1850 MG/L vs limit 0.0800 MG/L (2.3×)2019-01-01 · Trihalomethanes (TTHM): measured 0.1900 MG/L vs limit 0.0800 MG/L (2.4×)2018-10-01 · Trihalomethanes (TTHM): measured 0.1850 MG/L vs limit 0.0800 MG/L (2.3×)2018-07-01 · Total Haloacetic Acids (HAA5): measured 0.0650 MG/L vs limit 0.0600 MG/L (1.1×)2018-07-01 · Trihalomethanes (TTHM): measured 0.1700 MG/L vs limit 0.0800 MG/L (2.1×)2018-04-01 · Total Haloacetic Acids (HAA5): measured 0.0770 MG/L vs limit 0.0600 MG/L (1.3×)2018-04-01 · Trihalomethanes (TTHM): measured 0.1630 MG/L vs limit 0.0800 MG/L (2.0×)2018-01-01 · Total Haloacetic Acids (HAA5): measured 0.9950 MG/L vs limit 0.0600 MG/L (16.6×)2018-01-01 · Trihalomethanes (TTHM): measured 0.1780 MG/L vs limit 0.0800 MG/L (2.2×)2017-10-01 · Trihalomethanes (TTHM): measured 0.1750 MG/L vs limit 0.0800 MG/L (2.2×)2017-07-01 · Trihalomethanes (TTHM): measured 0.1767 MG/L vs limit 0.0800 MG/L (2.2×)2017-04-01 · Trihalomethanes (TTHM): measured 0.2167 MG/L vs limit 0.0800 MG/L (2.7×)2017-01-01 · Trihalomethanes (TTHM): measured 0.2000 MG/L vs limit 0.0800 MG/L (2.5×)2016-07-01 · Trihalomethanes (TTHM): measured 0.2300 MG/L vs limit 0.0800 MG/L (2.9×)2016-04-01 · Trihalomethanes (TTHM): measured 0.1675 MG/L vs limit 0.0800 MG/L (2.1×)2016-01-01 · Trihalomethanes (TTHM): measured 0.1775 MG/L vs limit 0.0800 MG/L (2.2×)2015-10-01 · Trihalomethanes (TTHM): measured 0.1525 MG/L vs limit 0.0800 MG/L (1.9×)2015-07-01 · Trihalomethanes (TTHM): measured 0.1500 MG/L vs limit 0.0800 MG/L (1.9×)2015-04-01 · Trihalomethanes (TTHM): measured 0.2025 MG/L vs limit 0.0800 MG/L (2.5×)2015-01-01 · Trihalomethanes (TTHM): measured 0.2025 MG/L vs limit 0.0800 MG/L (2.5×)2014-07-01 · Trihalomethanes (TTHM): measured 0.1880 MG/L vs limit 0.0800 MG/L (2.4×)2014-04-01 · Trihalomethanes (TTHM): measured 0.1680 MG/L vs limit 0.0800 MG/L (2.1×)2014-01-01 · Trihalomethanes (TTHM): measured 0.1500 MG/L vs limit 0.0800 MG/L (1.9×)2013-10-01 · Trihalomethanes (TTHM): measured 0.1630 MG/L vs limit 0.0800 MG/L (2.0×)2013-07-01 · Trihalomethanes (TTHM): measured 0.1750 MG/L vs limit 0.0800 MG/L (2.2×)2013-04-01 · Trihalomethanes (TTHM): measured 0.1800 MG/L vs limit 0.0800 MG/L (2.2×)2013-01-01 · Trihalomethanes (TTHM): measured 0.1830 MG/L vs limit 0.0800 MG/L (2.3×)2012-10-01 · Trihalomethanes (TTHM): measured 0.1780 MG/L vs limit 0.0800 MG/L (2.2×)2012-07-01 · Trihalomethanes (TTHM): measured 0.1530 MG/L vs limit 0.0800 MG/L (1.9×)2012-04-01 · Trihalomethanes (TTHM): measured 0.1630 MG/L vs limit 0.0800 MG/L (2.0×)2012-01-01 · Trihalomethanes (TTHM): measured 0.1800 MG/L vs limit 0.0800 MG/L (2.2×)2011-10-01 · Trihalomethanes (TTHM): measured 0.1750 MG/L vs limit 0.0800 MG/L (2.2×)2011-07-01 · Trihalomethanes (TTHM): measured 0.1700 MG/L vs limit 0.0800 MG/L (2.1×)2011-04-01 · Trihalomethanes (TTHM): measured 0.1570 MG/L vs limit 0.0800 MG/L (2.0×)2010-10-01 · Trihalomethanes (TTHM): measured 0.1440 MG/L vs limit 0.0800 MG/L (1.8×)2010-07-01 · Trihalomethanes (TTHM): measured 0.1650 MG/L vs limit 0.0800 MG/L (2.1×)2010-04-01 · Trihalomethanes (TTHM): measured 0.1750 MG/L vs limit 0.0800 MG/L (2.2×)2010-01-01 · Trihalomethanes (TTHM): measured 0.1680 MG/L vs limit 0.0800 MG/L (2.1×)2009-10-01 · Trihalomethanes (TTHM): measured 0.1880 MG/L vs limit 0.0800 MG/L (2.4×)2009-07-01 · Trihalomethanes (TTHM): measured 0.1900 MG/L vs limit 0.0800 MG/L (2.4×)2009-04-01 · Trihalomethanes (TTHM): measured 0.1930 MG/L vs limit 0.0800 MG/L (2.4×)2009-01-01 · Trihalomethanes (TTHM): measured 0.2130 MG/L vs limit 0.0800 MG/L (2.7×)2008-10-01 · Trihalomethanes (TTHM): measured 0.1880 MG/L vs limit 0.0800 MG/L (2.4×)2008-07-01 · Trihalomethanes (TTHM): measured 0.1650 MG/L vs limit 0.0800 MG/L (2.1×)2008-04-01 · Trihalomethanes (TTHM): measured 0.1530 MG/L vs limit 0.0800 MG/L (1.9×)2008-01-01 · Trihalomethanes (TTHM): measured 0.1135 MG/L vs limit 0.0800 MG/L (1.4×)
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 4 results on file · action level 15 ppb

7 ppb
5.5 ppb
0 ppb
0 ppb

Open now (2)

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

Every violation on record

  1. 2024-10-17Lead service line inventoryTTOpen
  2. 2024-10-17Lead service line inventoryRPTOpen
  3. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1410 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2021-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1610 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2021-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0640 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  6. 2020-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1780 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2020-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0710 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  8. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1530 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2020-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0670 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  10. 2020-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1200 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  11. 2020-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0680 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  12. 2020-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1350 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  13. 2020-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0800 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  14. 2019-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0780 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  15. 2019-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1480 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  16. 2019-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1750 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  17. 2019-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0800 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  18. 2019-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0690 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  19. 2019-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  20. 2019-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1900 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  21. 2018-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1850 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  22. 2018-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0650 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  23. 2018-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1700 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  24. 2018-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.0770 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  25. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1630 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
Show the other 53 entries
  1. 2018-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 0.9950 MG/L · limit 0.0600 MG/LPeriod ended · no return to compliance on file
  2. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1780 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  3. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1750 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  4. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1767 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  5. 2017-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2167 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  6. 2017-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2000 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  7. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2300 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  8. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1675 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  9. 2016-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1775 MG/L · limit 0.0800 MG/LPeriod ended · no return to compliance on file
  10. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1525 MG/L · limit 0.0800 MG/LBack in compliance
  11. 2015-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1500 MG/L · limit 0.0800 MG/LBack in compliance
  12. 2015-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2025 MG/L · limit 0.0800 MG/LBack in compliance
  13. 2015-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  14. 2015-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2025 MG/L · limit 0.0800 MG/LBack in compliance
  15. 2015-01-01Unknown contaminantVariance/Exemption/Other ComplianceBack in compliance
  16. 2015-01-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  17. 2014-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1880 MG/L · limit 0.0800 MG/LBack in compliance
  18. 2014-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  19. 2014-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1680 MG/L · limit 0.0800 MG/LBack in compliance
  20. 2014-02-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  21. 2014-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1500 MG/L · limit 0.0800 MG/LBack in compliance
  22. 2013-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1630 MG/L · limit 0.0800 MG/LBack in compliance
  23. 2013-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1750 MG/L · limit 0.0800 MG/LBack in compliance
  24. 2013-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1800 MG/L · limit 0.0800 MG/LBack in compliance
  25. 2013-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1830 MG/L · limit 0.0800 MG/LBack in compliance
  26. 2012-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1780 MG/L · limit 0.0800 MG/LBack in compliance
  27. 2012-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1530 MG/L · limit 0.0800 MG/LBack in compliance
  28. 2012-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1630 MG/L · limit 0.0800 MG/LBack in compliance
  29. 2012-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1800 MG/L · limit 0.0800 MG/LBack in compliance
  30. 2012-01-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  31. 2011-12-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  32. 2011-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1750 MG/L · limit 0.0800 MG/LBack in compliance
  33. 2011-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1700 MG/L · limit 0.0800 MG/LBack in compliance
  34. 2011-05-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  35. 2011-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1570 MG/L · limit 0.0800 MG/LBack in compliance
  36. 2011-03-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  37. 2010-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1440 MG/L · limit 0.0800 MG/LBack in compliance
  38. 2010-08-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  39. 2010-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1650 MG/L · limit 0.0800 MG/LBack in compliance
  40. 2010-06-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  41. 2010-05-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  42. 2010-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1750 MG/L · limit 0.0800 MG/LBack in compliance
  43. 2010-04-01Surface water treatment (SWTR)Treatment Technique (SWTR and GWR)Back in compliance
  44. 2010-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1680 MG/L · limit 0.0800 MG/LBack in compliance
  45. 2009-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1880 MG/L · limit 0.0800 MG/LBack in compliance
  46. 2009-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1900 MG/L · limit 0.0800 MG/LBack in compliance
  47. 2009-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1930 MG/L · limit 0.0800 MG/LBack in compliance
  48. 2009-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.2130 MG/L · limit 0.0800 MG/LBack in compliance
  49. 2008-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1880 MG/L · limit 0.0800 MG/LBack in compliance
  50. 2008-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1650 MG/L · limit 0.0800 MG/LBack in compliance
  51. 2008-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1530 MG/L · limit 0.0800 MG/LBack in compliance
  52. 2008-03-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  53. 2008-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1135 MG/L · limit 0.0800 MG/LBack in compliance

System details

Population served36
Service connections13
Water sourceSurface Water
System typeCommunity Water System
OwnerPrivate
StatusActive
CityFresno
EPA ZIP on file93711

Areas served

  • Fresno County

Reading this record

Pappas & Co (Mendota) is a community water system that draws from surface water and serves about 36 people in Fresno, 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.