Community Water System · PWSID WY5600109

Lance Creek Water District

Serves 45 peopleGroundwaterOwner: Local GovernmentLance Creek, Wyoming
1 open treatment violation.

Open for: Groundwater Rule. 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 1995: 102 violations. 31 over the limit · 2 treatment lapses · 68 missed or late tests · 1 notice or report. Most recent began 2024-04-01.

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

31Over the limit
2Treatment lapse1 open
68Missed or late test2 open
1Notice or report

More violations on record than 97% of active water systems in Wyoming. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

1995 · Missed or late test: 119951999 · Missed or late test: 12000 · Missed or late test: 1200020052007 · Missed or late test: 12010 · Missed or late test: 1201020152016 · Over the limit: 12016 · Treatment lapse: 12017 · Over the limit: 42017 · Over the limit: 42017 · Missed or late test: 12018 · Over the limit: 62018 · Over the limit: 62018 · Missed or late test: 52018 · Missed or late test: 52019 · Over the limit: 42019 · Over the limit: 42019 · Missed or late test: 232019 · Missed or late test: 232019 · Missed or late test: 232019 · Missed or late test: 232019 · Missed or late test: 232019 · Missed or late test: 232019 · Missed or late test: 232019 · Missed or late test: 232020 · Over the limit: 42020 · Over the limit: 42020 · Missed or late test: 72020 · Missed or late test: 72020 · Missed or late test: 72020 · Notice or report: 120202021 · Over the limit: 42021 · Over the limit: 42021 · Missed or late test: 52021 · Missed or late test: 52022 · Over the limit: 52022 · Over the limit: 52022 · Missed or late test: 102022 · Missed or late test: 102022 · Missed or late test: 102022 · Missed or late test: 102023 · Over the limit: 32023 · Treatment lapse: 12023 · Missed or late test: 72023 · Missed or late test: 72023 · Missed or late test: 72024 · Missed or late test: 52024 · Missed or late test: 52025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
30% over the limit · 312% treatment lapse · 267% missed or late test · 68<1% notice or report · 1

Across Wyoming, 85% of violations are missed or late tests and 4% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Combined Radium (-226 and...2022-07-01 · Combined Radium (-226 and -228): measured 8.00 PCI/L vs limit 5.00 PCI/L (1.6×)2022-04-01 · Combined Radium (-226 and -228): measured 8.00 PCI/L vs limit 5.00 PCI/L (1.6×)2022-01-01 · Combined Radium (-226 and -228): measured 9.00 PCI/L vs limit 5.00 PCI/L (1.8×)
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 5 results on file · action level 15 ppb

11 ppb
8 ppb
7 ppb
2 ppb
2 ppb

Open now (3)

  1. 2023-08-16Groundwater RuleFailure To Address DeficiencyOpen
  2. 2023-01-01DBP Stage 1 ×2Monitoring and Reporting (DBP)Open

Every violation on record

  1. 2024-04-01Radium-228Monitoring, RegularBack in compliance
  2. 2024-04-01Radium-226Monitoring, RegularBack in compliance
  3. 2024-04-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  4. 2024-04-01Combined UraniumMonitoring, RegularBack in compliance
  5. 2024-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  6. 2023-10-01Radium-228Monitoring, RegularBack in compliance
  7. 2023-10-01Radium-226Monitoring, RegularBack in compliance
  8. 2023-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  9. 2023-10-01Combined UraniumMonitoring, RegularBack in compliance
  10. 2023-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  11. 2023-08-16Groundwater RuleFailure To Address DeficiencyOpen
  12. 2023-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 7.00 PCI/LBack in compliance
  13. 2023-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/LPeriod ended · no return to compliance on file
  14. 2023-01-01DBP Stage 1 ×2Monitoring and Reporting (DBP)Open
  15. 2023-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/LBack in compliance
  16. 2022-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/LBack in compliance
  17. 2022-10-01Radium-228Monitoring, RegularBack in compliance
  18. 2022-10-01Radium-226Monitoring, RegularBack in compliance
  19. 2022-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  20. 2022-10-01Combined UraniumMonitoring, RegularBack in compliance
  21. 2022-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  22. 2022-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/L · limit 5.00 PCI/LBack in compliance
  23. 2022-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/L · limit 5.00 PCI/LPeriod ended · no return to compliance on file
  24. 2022-01-01Combined Radium (-226 and -228) ×2MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  25. 2022-01-01Radium-228Monitoring, RegularBack in compliance
Show the other 75 entries
  1. 2022-01-01Radium-226Monitoring, RegularBack in compliance
  2. 2022-01-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  3. 2022-01-01Combined UraniumMonitoring, RegularBack in compliance
  4. 2022-01-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  5. 2021-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  6. 2021-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  7. 2021-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 10.00 PCI/LPeriod ended · no return to compliance on file
  8. 2021-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 10.00 PCI/LPeriod ended · no return to compliance on file
  9. 2021-01-01Radium-228Monitoring, RegularBack in compliance
  10. 2021-01-01Radium-226Monitoring, RegularBack in compliance
  11. 2021-01-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  12. 2021-01-01Combined UraniumMonitoring, RegularBack in compliance
  13. 2021-01-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  14. 2020-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
  15. 2020-10-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  16. 2020-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 10.00 PCI/LPeriod ended · no return to compliance on file
  17. 2020-10-01Radium-228Monitoring, RegularBack in compliance
  18. 2020-10-01Radium-226Monitoring, RegularBack in compliance
  19. 2020-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  20. 2020-10-01Combined UraniumMonitoring, RegularBack in compliance
  21. 2020-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  22. 2020-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 7.00 PCI/LPeriod ended · no return to compliance on file
  23. 2020-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 10.00 PCI/LPeriod ended · no return to compliance on file
  24. 2020-01-01AsbestosMonitoring, RegularPeriod ended · no return to compliance on file
  25. 2020-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  26. 2019-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  27. 2019-10-01Radium-228Monitoring, RegularBack in compliance
  28. 2019-10-01Radium-226Monitoring, RegularBack in compliance
  29. 2019-10-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  30. 2019-10-01Combined UraniumMonitoring, RegularBack in compliance
  31. 2019-10-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  32. 2019-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  33. 2019-07-01Radium-228Monitoring, RegularBack in compliance
  34. 2019-07-01Radium-226Monitoring, RegularBack in compliance
  35. 2019-07-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  36. 2019-07-01Combined UraniumMonitoring, RegularBack in compliance
  37. 2019-07-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  38. 2019-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  39. 2019-04-01Radium-228Monitoring, RegularBack in compliance
  40. 2019-04-01Radium-226Monitoring, RegularBack in compliance
  41. 2019-04-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  42. 2019-04-01Combined UraniumMonitoring, RegularBack in compliance
  43. 2019-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  44. 2019-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  45. 2019-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  46. 2019-01-01ArsenicMonitoring, RegularBack in compliance
  47. 2019-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  48. 2019-01-01Radium-228Monitoring, RegularBack in compliance
  49. 2019-01-01Radium-226Monitoring, RegularBack in compliance
  50. 2019-01-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  51. 2019-01-01Combined UraniumMonitoring, RegularBack in compliance
  52. 2019-01-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  53. 2018-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  54. 2018-10-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 18.00 PCI/LPeriod ended · no return to compliance on file
  55. 2018-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 9.00 PCI/LPeriod ended · no return to compliance on file
  56. 2018-07-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 17.00 PCI/LPeriod ended · no return to compliance on file
  57. 2018-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/LPeriod ended · no return to compliance on file
  58. 2018-04-01Radium-228Monitoring, RegularBack in compliance
  59. 2018-04-01Radium-226Monitoring, RegularBack in compliance
  60. 2018-04-01Combined Radium (-226 and -228)Monitoring, RegularBack in compliance
  61. 2018-04-01Combined UraniumMonitoring, RegularBack in compliance
  62. 2018-04-01Gross Alpha, Excl. Radon and UMonitoring, RegularBack in compliance
  63. 2018-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 7.00 PCI/LPeriod ended · no return to compliance on file
  64. 2017-10-01ArsenicMonitoring, RegularBack in compliance
  65. 2017-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 7.00 PCI/LPeriod ended · no return to compliance on file
  66. 2017-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 8.00 PCI/LPeriod ended · no return to compliance on file
  67. 2017-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 7.00 PCI/LPeriod ended · no return to compliance on file
  68. 2017-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 6.00 PCI/LPeriod ended · no return to compliance on file
  69. 2016-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 6.00 PCI/LPeriod ended · no return to compliance on file
  70. 2016-08-15Groundwater RuleFailure To Address DeficiencyBack in compliance
  71. 2010-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  72. 2007-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  73. 2000-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  74. 1999-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance
  75. 1995-01-01Lead and Copper RuleInitial Tap Sampling for Pb and CuBack in compliance

System details

Population served45
Service connections33
Water sourceGroundwater
System typeCommunity Water System
OwnerLocal Government
StatusActive
CityLance Creek
EPA ZIP on file82222

Areas served

  • Lance Creek, Niobrara County

Reading this record

Lance Creek Water District is a community water system that draws from groundwater and serves about 45 people in Lance Creek, Wyoming. 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.