Community Water System · PWSID MD0070018

Town of Perryville

Serves 4,413 peopleSurface WaterOwner: Local GovernmentPerryville, Maryland
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 2008: 60 violations. 11 over the limit · 1 treatment lapse · 39 missed or late tests · 9 notices or reports. Most recent began 2025-07-02.

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

11Over the limit
1Treatment lapse
39Missed or late test
9Notice or report1 open

More violations on record than 99% of active water systems in Maryland. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052008 · Notice or report: 12010 · Notice or report: 120102011 · Notice or report: 22012 · Missed or late test: 12012 · Notice or report: 12013 · Missed or late test: 12013 · Notice or report: 12015 · Over the limit: 22015 · Missed or late test: 120152016 · Over the limit: 62016 · Over the limit: 62018 · Missed or late test: 22018 · Notice or report: 12020 · Over the limit: 120202021 · Missed or late test: 12023 · Treatment lapse: 12023 · Notice or report: 12024 · Missed or late test: 12025 · Over the limit: 22025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Missed or late test: 322025 · Notice or report: 12025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
18% over the limit · 112% treatment lapse · 165% missed or late test · 3915% notice or report · 9

Across Maryland, 72% of violations are missed or late tests and 5% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Trihalomethanes (TTHM)Total Haloacetic Acids (HAA5)2025-07-01 · Trihalomethanes (TTHM): measured 87.00 UG/L vs limit 80.00 UG/L (1.1×)2025-04-01 · Trihalomethanes (TTHM): measured 83.00 UG/L vs limit 80.00 UG/L (1.0×)2020-07-01 · Trihalomethanes (TTHM): measured 82.00 UG/L vs limit 80.00 UG/L (1.0×)2016-07-01 · Trihalomethanes (TTHM): measured 89.00 UG/L vs limit 80.00 UG/L (1.1×)2016-07-01 · Total Haloacetic Acids (HAA5): measured 102.00 UG/L vs limit 60.00 UG/L (1.7×)2016-04-01 · Trihalomethanes (TTHM): measured 98.00 UG/L vs limit 80.00 UG/L (1.2×)2016-04-01 · Total Haloacetic Acids (HAA5): measured 68.00 UG/L vs limit 60.00 UG/L (1.1×)2016-01-01 · Trihalomethanes (TTHM): measured 97.00 UG/L vs limit 80.00 UG/L (1.2×)2016-01-01 · Total Haloacetic Acids (HAA5): measured 113.00 UG/L vs limit 60.00 UG/L (1.9×)2015-10-01 · Total Haloacetic Acids (HAA5): measured 86.00 UG/L vs limit 60.00 UG/L (1.4×)2015-10-01 · Trihalomethanes (TTHM): measured 82.00 UG/L vs limit 80.00 UG/L (1.0×)
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

2 ppb
0 ppb
0 ppb

Open now (1)

  1. 2025-07-02Lead service line inventoryRPTOpen

Every violation on record

  1. 2025-07-02Lead service line inventoryRPTOpen
  2. 2025-07-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
  3. 2025-07-01DecachlorobiphenylMonitoring, RegularPeriod ended · no return to compliance on file
  4. 2025-07-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
  5. 2025-07-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  6. 2025-07-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file
  7. 2025-07-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
  8. 2025-07-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
  9. 2025-07-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
  10. 2025-07-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
  11. 2025-07-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
  12. 2025-07-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
  13. 2025-07-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
  14. 2025-07-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
  15. 2025-07-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
  16. 2025-07-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
  17. 2025-07-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2025-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 87.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  19. 2025-04-01LassoMonitoring, RegularBack in compliance
  20. 2025-04-01AtrazineMonitoring, RegularBack in compliance
  21. 2025-04-01HexachlorocyclopentadieneMonitoring, RegularBack in compliance
  22. 2025-04-01Di(2-ethylhexyl) phthalateMonitoring, RegularBack in compliance
  23. 2025-04-01SimazineMonitoring, RegularBack in compliance
  24. 2025-04-01Di(2-ethylhexyl) adipateMonitoring, RegularBack in compliance
  25. 2025-04-01ToxapheneMonitoring, RegularBack in compliance
Show the other 35 entries
  1. 2025-04-01MethoxychlorMonitoring, RegularBack in compliance
  2. 2025-04-01Bhc-GammaMonitoring, RegularBack in compliance
  3. 2025-04-01EndrinMonitoring, RegularBack in compliance
  4. 2025-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 83.00 UG/L · limit 80.00 UG/LPeriod ended · no return to compliance on file
  5. 2025-04-01ChlordaneMonitoring, RegularBack in compliance
  6. 2025-04-01DecachlorobiphenylMonitoring, RegularBack in compliance
  7. 2025-04-01Benzo(a)pyreneMonitoring, RegularBack in compliance
  8. 2025-04-01HexachlorobenzeneMonitoring, RegularBack in compliance
  9. 2025-04-01Heptachlor epoxideMonitoring, RegularBack in compliance
  10. 2025-04-01HeptachlorMonitoring, RegularBack in compliance
  11. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  12. 2023-03-20Surface water filtration (IESWTR)Record KeepingBack in compliance
  13. 2023-03-01Surface water treatment (LT2)Treatment Technique (SWTR and GWR)Back in compliance
  14. 2021-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  15. 2020-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 82.00 UG/L · limit 80.00 UG/LBack in compliance
  16. 2018-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  17. 2018-07-01E. ColiMonitoring, Source Water (LT2)Back in compliance
  18. 2018-03-01Revised Total Coliform RuleRPTBack in compliance
  19. 2016-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 89.00 UG/L · limit 80.00 UG/LBack in compliance
  20. 2016-07-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 102.00 UG/L · limit 60.00 UG/LBack in compliance
  21. 2016-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 98.00 UG/L · limit 80.00 UG/LBack in compliance
  22. 2016-04-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 68.00 UG/L · limit 60.00 UG/LBack in compliance
  23. 2016-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 97.00 UG/L · limit 80.00 UG/LBack in compliance
  24. 2016-01-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 113.00 UG/L · limit 60.00 UG/LBack in compliance
  25. 2015-10-01Total Haloacetic Acids (HAA5)MCL, Averagemeasured 86.00 UG/L · limit 60.00 UG/LBack in compliance
  26. 2015-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 82.00 UG/L · limit 80.00 UG/LBack in compliance
  27. 2015-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  28. 2013-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  29. 2013-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  30. 2012-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  31. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  32. 2011-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  33. 2011-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  34. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  35. 2008-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served4,413
Service connections1,395
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityPerryville
EPA ZIP on file21903

Areas served

  • Cecil County

Reading this record

Town of Perryville is a community water system that draws from surface water and serves about 4,413 people in Perryville, Maryland. 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.