Community Water System · PWSID TX0200401

Key Largo Utilities

Serves 105 peopleGroundwaterOwner: PrivateSheridan, Wyoming
1 open treatment violation.

Open for: Lead and Copper 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 2010: 163 violations. 7 treatment lapses · 85 missed or late tests · 71 notices or reports. Most recent began 2025-09-29.

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
7Treatment lapse1 open
85Missed or late test2 open
71Notice or report1 open

More violations on record than 98% 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

20052010 · Notice or report: 220102011 · Missed or late test: 32011 · Missed or late test: 32012 · Missed or late test: 42012 · Missed or late test: 42012 · Notice or report: 12013 · Missed or late test: 52013 · Missed or late test: 52013 · Missed or late test: 52013 · Notice or report: 22014 · Missed or late test: 72014 · Missed or late test: 72014 · Missed or late test: 72014 · Missed or late test: 72014 · Notice or report: 92014 · Notice or report: 92014 · Notice or report: 92014 · Notice or report: 92014 · Notice or report: 92015 · Treatment lapse: 12015 · Missed or late test: 42015 · Missed or late test: 42015 · Notice or report: 112015 · Notice or report: 112015 · Notice or report: 112015 · Notice or report: 112015 · Notice or report: 112015 · Notice or report: 1120152016 · Treatment lapse: 32016 · Treatment lapse: 32016 · Missed or late test: 102016 · Missed or late test: 102016 · Missed or late test: 102016 · Missed or late test: 102016 · Missed or late test: 102016 · Notice or report: 112016 · Notice or report: 112016 · Notice or report: 112016 · Notice or report: 112016 · Notice or report: 112016 · Notice or report: 112017 · Treatment lapse: 12017 · Missed or late test: 92017 · Missed or late test: 92017 · Missed or late test: 92017 · Missed or late test: 92017 · Missed or late test: 92017 · Notice or report: 72017 · Notice or report: 72017 · Notice or report: 72017 · Notice or report: 72018 · Missed or late test: 102018 · Missed or late test: 102018 · Missed or late test: 102018 · Missed or late test: 102018 · Missed or late test: 102018 · Notice or report: 52018 · Notice or report: 52018 · Notice or report: 52019 · Missed or late test: 62019 · Missed or late test: 62019 · Missed or late test: 62019 · Notice or report: 12020 · Missed or late test: 72020 · Missed or late test: 72020 · Missed or late test: 72020 · Missed or late test: 72020 · Notice or report: 72020 · Notice or report: 72020 · Notice or report: 72020 · Notice or report: 720202021 · Missed or late test: 72021 · Missed or late test: 72021 · Missed or late test: 72021 · Missed or late test: 72021 · Notice or report: 42021 · Notice or report: 42022 · Missed or late test: 62022 · Missed or late test: 62022 · Missed or late test: 62022 · Notice or report: 62022 · Notice or report: 62022 · Notice or report: 62023 · Missed or late test: 12023 · Notice or report: 32023 · Notice or report: 32024 · Treatment lapse: 22024 · Missed or late test: 42024 · Missed or late test: 42024 · Notice or report: 12025 · Missed or late test: 22025 · Notice or report: 12025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
4% treatment lapse · 752% missed or late test · 8544% notice or report · 71

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

What you can do

  • Lead: Run cold water for 30 seconds to 2 minutes before using it for drinking or cooking, especially after the water has been sitting for several hours. Use only cold water for cooking and baby formula. Consider a water filter certified to remove lead (look for NSF/ANSI Standard 53 certification). Have your water tested if you live in an older home.

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 8 results on file · action level 15 ppb

80 ppb
60 ppb
6 ppb
4.9 ppb
3 ppb
2 ppb
1 ppb
0 ppb

Open now (4)

  1. 2025-09-29Lead and Copper RuleLead Consumer NoticeOpen
  2. 2025-05-15Public NoticePN Violation for NPDWR ViolationOpen
  3. 2024-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/ROpen
  4. 2016-10-01Lead and Copper RuleOCCT/SOWT Study/RecommendationOpen

Every violation on record

  1. 2025-09-29Lead and Copper RuleLead Consumer NoticeOpen
  2. 2025-05-15Public NoticePN Violation for NPDWR ViolationOpen
  3. 2025-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  4. 2024-10-17Lead service line inventoryRPTBack in compliance
  5. 2024-10-17Lead service line inventoryTTBack in compliance
  6. 2024-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  7. 2024-03-31Lead and Copper RuleLead Consumer NoticeBack in compliance
  8. 2024-03-01Lead and Copper RulePublic EducationBack in compliance
  9. 2024-01-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/ROpen
  10. 2024-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  11. 2023-06-18Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2023-04-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  13. 2023-03-05Public NoticePN Violation for NPDWR ViolationBack in compliance
  14. 2023-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  15. 2022-09-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  16. 2022-08-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  17. 2022-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  18. 2022-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  19. 2022-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  20. 2022-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  21. 2022-06-25Public NoticePN Violation for NPDWR ViolationBack in compliance
  22. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  23. 2022-03-24Public NoticePN Violation for NPDWR ViolationBack in compliance
  24. 2022-03-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  25. 2022-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
Show the other 124 entries
  1. 2022-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  2. 2021-10-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  3. 2021-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  4. 2021-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  5. 2021-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  6. 2021-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  7. 2021-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  8. 2021-03-15Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2021-03-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  10. 2021-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  11. 2021-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  12. 2021-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  13. 2020-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
  14. 2020-09-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  15. 2020-09-06Public NoticePN Violation for NPDWR ViolationBack in compliance
  16. 2020-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  17. 2020-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  18. 2020-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  19. 2020-06-25Public NoticePN Violation for NPDWR ViolationBack in compliance
  20. 2020-05-16Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  21. 2020-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  22. 2020-03-09Public NoticePN Violation for NPDWR ViolationBack in compliance
  23. 2020-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  24. 2020-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  25. 2020-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  26. 2019-07-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  27. 2019-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  28. 2019-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  29. 2019-01-04Public NoticePN Violation for NPDWR ViolationBack in compliance
  30. 2019-01-01Lead and Copper RuleWater Quality Parameter M/RBack in compliance
  31. 2019-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  32. 2019-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  33. 2018-10-26Public NoticePN Violation for NPDWR ViolationBack in compliance
  34. 2018-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  35. 2018-08-17Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  36. 2018-07-01Lead and Copper Rule ×2Water Quality Parameter M/RBack in compliance
  37. 2018-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  38. 2018-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  39. 2018-07-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  40. 2018-05-02Public NoticePN Violation for NPDWR ViolationBack in compliance
  41. 2018-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  42. 2018-01-01Lead and Copper Rule ×2Water Quality Parameter M/RBack in compliance
  43. 2018-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  44. 2018-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  45. 2017-10-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  46. 2017-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
  47. 2017-09-25Public NoticePN Violation for NPDWR ViolationBack in compliance
  48. 2017-09-11Revised Total Coliform RuleTTBack in compliance
  49. 2017-08-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  50. 2017-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  51. 2017-06-05Public NoticePN Violation for NPDWR ViolationBack in compliance
  52. 2017-05-01Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  53. 2017-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  54. 2017-04-01Revised Total Coliform RuleMONBack in compliance
  55. 2017-04-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  56. 2017-03-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  57. 2017-01-16Public NoticePN Violation for NPDWR ViolationBack in compliance
  58. 2017-01-01Lead and Copper Rule ×2Water Quality Parameter M/RBack in compliance
  59. 2017-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  60. 2016-12-31Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  61. 2016-10-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  62. 2016-10-01Lead and Copper RuleOCCT/SOWT Study/RecommendationOpen
  63. 2016-10-01Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  64. 2016-10-01Revised Total Coliform RuleTTBack in compliance
  65. 2016-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  66. 2016-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
  67. 2016-09-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  68. 2016-09-01Lead and Copper RulePublic EducationBack in compliance
  69. 2016-07-25Public NoticePN Violation for NPDWR ViolationBack in compliance
  70. 2016-07-01Lead and Copper Rule ×2Water Quality Parameter M/RBack in compliance
  71. 2016-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  72. 2016-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  73. 2016-04-20Public NoticePN Violation for NPDWR ViolationBack in compliance
  74. 2016-04-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  75. 2016-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  76. 2016-04-01Lead and Copper RuleInitial, Follow-up, or Routine Source Water M/RBack in compliance
  77. 2016-01-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  78. 2016-01-01Lead and Copper Rule ×2Water Quality Parameter M/RBack in compliance
  79. 2016-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  80. 2015-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
  81. 2015-12-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  82. 2015-12-01Lead and Copper RulePublic EducationBack in compliance
  83. 2015-10-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  84. 2015-09-25Public NoticePN Violation for NPDWR ViolationBack in compliance
  85. 2015-09-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  86. 2015-08-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  87. 2015-07-11Public NoticePN Violation for NPDWR ViolationBack in compliance
  88. 2015-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  89. 2015-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  90. 2015-06-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  91. 2015-04-15Public NoticePN Violation for NPDWR ViolationBack in compliance
  92. 2015-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  93. 2015-02-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  94. 2015-01-22Public NoticePN Violation for NPDWR ViolationBack in compliance
  95. 2015-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  96. 2014-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  97. 2014-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  98. 2014-10-01Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  99. 2014-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  100. 2014-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  101. 2014-08-19Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  102. 2014-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  103. 2014-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  104. 2014-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  105. 2014-02-24Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  106. 2014-02-13Public Notice ×2PN Violation for NPDWR ViolationBack in compliance
  107. 2014-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  108. 2013-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  109. 2013-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  110. 2013-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  111. 2013-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  112. 2013-06-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  113. 2013-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  114. 2013-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  115. 2012-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  116. 2012-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  117. 2012-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  118. 2012-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  119. 2012-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  120. 2011-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  121. 2011-07-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  122. 2011-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  123. 2010-07-01Consumer Confidence RuleCCR Inadequate ReportingBack in compliance
  124. 2010-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance

System details

Population served105
Service connections35
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CitySheridan
EPA ZIP on file82801-5777

Areas served

  • Brazoria County

Reading this record

Key Largo Utilities is a community water system that draws from groundwater and serves about 105 people in Sheridan, 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.