Community Water System · PWSID CT1480011

Wallingford Water Department

Serves 37,267 peopleSurface WaterOwner: Local GovernmentWallingford, Connecticut
Nothing open right now.

On record since 2017: 92 violations. 90 missed or late tests · 2 notices or reports. Most recent began 2024-07-01.

None of them is a measurement of contaminated water.

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

0Over the limit
0Treatment lapse
90Missed or late test
2Notice or report

More violations on record than 96% of active water systems in Connecticut. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

2005201020152017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 412017 · Missed or late test: 4120202023 · Notice or report: 12024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Missed or late test: 492024 · Notice or report: 12025
One square ≈ 5 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
98% missed or late test · 902% notice or report · 2

Across Connecticut, 76% of violations are missed or late tests and 1% are water over a limit.

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 14 results on file · action level 15 ppb

4 ppb
0.4 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Every violation on record

  1. 2024-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  2. 2024-04-01n-PropylbenzeneMonitoring, RegularBack in compliance
  3. 2024-04-01o-XyleneMonitoring, RegularBack in compliance
  4. 2024-04-01StyreneMonitoring, RegularBack in compliance
  5. 2024-04-01m-XyleneMonitoring, RegularBack in compliance
  6. 2024-04-01BromobenzeneMonitoring, RegularBack in compliance
  7. 2024-04-01EthylbenzeneMonitoring, RegularBack in compliance
  8. 2024-04-01TolueneMonitoring, RegularBack in compliance
  9. 2024-04-01BenzeneMonitoring, RegularBack in compliance
  10. 2024-04-01ChlorobenzeneMonitoring, RegularBack in compliance
  11. 2024-04-011,1,2,2-TetrachloroethaneMonitoring, RegularBack in compliance
  12. 2024-04-01TetrachloroethyleneMonitoring, RegularBack in compliance
  13. 2024-04-011,1,1,2-TetrachloroethaneMonitoring, RegularBack in compliance
  14. 2024-04-011,1,2-TrichloroethaneMonitoring, RegularBack in compliance
  15. 2024-04-01TrichloroethyleneMonitoring, RegularBack in compliance
  16. 2024-04-011,2-DichloropropaneMonitoring, RegularBack in compliance
  17. 2024-04-01Carbon tetrachlorideMonitoring, RegularBack in compliance
  18. 2024-04-011,1,1-TrichloroethaneMonitoring, RegularBack in compliance
  19. 2024-04-011,2-DichloroethaneMonitoring, RegularBack in compliance
  20. 2024-04-01trans-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  21. 2024-04-011,1-DichloroethaneMonitoring, RegularBack in compliance
  22. 2024-04-011,1-DichloroethyleneMonitoring, RegularBack in compliance
  23. 2024-04-01Vinyl chlorideMonitoring, RegularBack in compliance
  24. 2024-04-01p-DichlorobenzeneMonitoring, RegularBack in compliance
  25. 2024-04-01o-DichlorobenzeneMonitoring, RegularBack in compliance
Show the other 67 entries
  1. 2024-04-01m-DichlorobenzeneMonitoring, RegularBack in compliance
  2. 2024-04-01p-ChlorotolueneMonitoring, RegularBack in compliance
  3. 2024-04-01o-ChlorotolueneMonitoring, RegularBack in compliance
  4. 2024-04-01DichloromethaneMonitoring, RegularBack in compliance
  5. 2024-04-01p-XyleneMonitoring, RegularBack in compliance
  6. 2024-04-01DibromochloromethaneMonitoring, RegularBack in compliance
  7. 2024-04-01BromodichloromethaneMonitoring, RegularBack in compliance
  8. 2024-04-01BromoformMonitoring, RegularBack in compliance
  9. 2024-04-01ChloroformMonitoring, RegularBack in compliance
  10. 2024-04-011,3,5-TrimethylbenzeneMonitoring, RegularBack in compliance
  11. 2024-04-01n-ButylbenzeneMonitoring, RegularBack in compliance
  12. 2024-04-011,2,4-TrimethylbenzeneMonitoring, RegularBack in compliance
  13. 2024-04-012,2-DichloropropaneMonitoring, RegularBack in compliance
  14. 2024-04-011,2,3-TrichloropropaneMonitoring, RegularBack in compliance
  15. 2024-04-011, 3-DichloropropeneMonitoring, RegularBack in compliance
  16. 2024-04-011,3-DichloropropaneMonitoring, RegularBack in compliance
  17. 2024-04-011,1-DichloropropeneMonitoring, RegularBack in compliance
  18. 2024-04-01DibromomethaneMonitoring, RegularBack in compliance
  19. 2024-04-01cis-1,2-DichloroethyleneMonitoring, RegularBack in compliance
  20. 2024-04-011,2,4-TrichlorobenzeneMonitoring, RegularBack in compliance
  21. 2024-04-01Methyl Tert-Butyl EtherMonitoring, RegularBack in compliance
  22. 2024-04-01NaphthaleneMonitoring, RegularBack in compliance
  23. 2024-04-01ChloroethaneMonitoring, RegularBack in compliance
  24. 2024-04-01BromomethaneMonitoring, RegularBack in compliance
  25. 2024-04-01ChloromethaneMonitoring, RegularBack in compliance
  26. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  27. 2017-01-01ChlordaneMonitoring, RegularPeriod ended · no return to compliance on file
  28. 2017-01-01Ethylene DibromideMonitoring, RegularPeriod ended · no return to compliance on file
  29. 2017-01-011, 2-Dibromo-3-ChloropropaneMonitoring, RegularPeriod ended · no return to compliance on file
  30. 2017-01-01MetribuzinMonitoring, RegularPeriod ended · no return to compliance on file
  31. 2017-01-01DicambaMonitoring, RegularPeriod ended · no return to compliance on file
  32. 2017-01-01Total Polychlorinated Biphenyls (PCB)Monitoring, RegularPeriod ended · no return to compliance on file
  33. 2017-01-01AldrinMonitoring, RegularPeriod ended · no return to compliance on file
  34. 2017-01-01PentachlorophenolMonitoring, RegularPeriod ended · no return to compliance on file
  35. 2017-01-01Benzo(a)pyreneMonitoring, RegularPeriod ended · no return to compliance on file
  36. 2017-01-01HexachlorobenzeneMonitoring, RegularPeriod ended · no return to compliance on file
  37. 2017-01-012, 4, 5-TpMonitoring, RegularPeriod ended · no return to compliance on file
  38. 2017-01-012, 4-DMonitoring, RegularPeriod ended · no return to compliance on file
  39. 2017-01-01PropachlorMonitoring, RegularPeriod ended · no return to compliance on file
  40. 2017-01-01ButachlorMonitoring, RegularPeriod ended · no return to compliance on file
  41. 2017-01-01DieldrinMonitoring, RegularPeriod ended · no return to compliance on file
  42. 2017-01-01Heptachlor epoxideMonitoring, RegularPeriod ended · no return to compliance on file
  43. 2017-01-013-HydroxycarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  44. 2017-01-01HeptachlorMonitoring, RegularPeriod ended · no return to compliance on file
  45. 2017-01-01LassoMonitoring, RegularPeriod ended · no return to compliance on file
  46. 2017-01-01AtrazineMonitoring, RegularPeriod ended · no return to compliance on file
  47. 2017-01-01AldicarbMonitoring, RegularPeriod ended · no return to compliance on file
  48. 2017-01-01CarbofuranMonitoring, RegularPeriod ended · no return to compliance on file
  49. 2017-01-01MetolachlorMonitoring, RegularPeriod ended · no return to compliance on file
  50. 2017-01-01Aldicarb sulfoneMonitoring, RegularPeriod ended · no return to compliance on file
  51. 2017-01-01Aldicarb sulfoxideMonitoring, RegularPeriod ended · no return to compliance on file
  52. 2017-01-01HexachlorocyclopentadieneMonitoring, RegularPeriod ended · no return to compliance on file
  53. 2017-01-01DinosebMonitoring, RegularPeriod ended · no return to compliance on file
  54. 2017-01-01PicloramMonitoring, RegularPeriod ended · no return to compliance on file
  55. 2017-01-01Di(2-ethylhexyl) phthalateMonitoring, RegularPeriod ended · no return to compliance on file
  56. 2017-01-01SimazineMonitoring, RegularPeriod ended · no return to compliance on file
  57. 2017-01-01OxamylMonitoring, RegularPeriod ended · no return to compliance on file
  58. 2017-01-01Di(2-ethylhexyl) adipateMonitoring, RegularPeriod ended · no return to compliance on file
  59. 2017-01-01GlyphosateMonitoring, RegularPeriod ended · no return to compliance on file
  60. 2017-01-01DiquatMonitoring, RegularPeriod ended · no return to compliance on file
  61. 2017-01-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
  62. 2017-01-01MethomylMonitoring, RegularPeriod ended · no return to compliance on file
  63. 2017-01-01CarbarylMonitoring, RegularPeriod ended · no return to compliance on file
  64. 2017-01-01ToxapheneMonitoring, RegularPeriod ended · no return to compliance on file
  65. 2017-01-01MethoxychlorMonitoring, RegularPeriod ended · no return to compliance on file
  66. 2017-01-01Bhc-GammaMonitoring, RegularPeriod ended · no return to compliance on file
  67. 2017-01-01EndrinMonitoring, RegularPeriod ended · no return to compliance on file

System details

Population served37,267
Service connections13,204
Water sourceSurface Water
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityWallingford
EPA ZIP on file06492

Areas served

  • New Haven County

Reading this record

Wallingford Water Department is a community water system that draws from surface water and serves about 37,267 people in Wallingford, Connecticut. 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.