Community Water System · PWSID CO0102300

Valley Mobile Home LLC

Serves 85 peopleGroundwaterOwner: PrivateCarbondale, Colorado
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 2001: 106 violations. 34 over the limit · 3 treatment lapses · 39 missed or late tests · 30 notices or reports. Most recent began 2025-07-31.

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

34Over the limit
3Treatment lapse1 open
39Missed or late test
30Notice or report1 open

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

The record, year by year

2001 · Missed or late test: 12002 · Missed or late test: 12003 · Notice or report: 12004 · Missed or late test: 220052006 · Notice or report: 12007 · Notice or report: 1201020152016 · Missed or late test: 12016 · Notice or report: 12017 · Over the limit: 22017 · Missed or late test: 102017 · Missed or late test: 102017 · Missed or late test: 102017 · Missed or late test: 102017 · Missed or late test: 102017 · Notice or report: 22018 · Over the limit: 62018 · Over the limit: 62018 · Over the limit: 62018 · Treatment lapse: 12018 · Missed or late test: 82018 · Missed or late test: 82018 · Missed or late test: 82018 · Missed or late test: 82018 · Notice or report: 42018 · Notice or report: 42019 · Over the limit: 42019 · Over the limit: 42019 · Missed or late test: 22019 · Notice or report: 32019 · Notice or report: 32020 · Over the limit: 52020 · Over the limit: 52020 · Over the limit: 52020 · Missed or late test: 32020 · Missed or late test: 32020 · Notice or report: 120202021 · Over the limit: 72021 · Over the limit: 72021 · Over the limit: 72021 · Over the limit: 72021 · Missed or late test: 12022 · Over the limit: 42022 · Over the limit: 42022 · Notice or report: 22023 · Over the limit: 42023 · Over the limit: 42023 · Missed or late test: 12023 · Notice or report: 32023 · Notice or report: 32024 · Over the limit: 22024 · Treatment lapse: 22024 · Missed or late test: 52024 · Missed or late test: 52024 · Missed or late test: 52024 · Notice or report: 82024 · Notice or report: 82024 · Notice or report: 82024 · Notice or report: 82025 · Missed or late test: 42025 · Missed or late test: 42025 · Notice or report: 32025 · Notice or report: 32025
One square ≈ 2 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
32% over the limit · 343% treatment lapse · 337% missed or late test · 3928% notice or report · 30

Across Colorado, 74% of violations are missed or late tests and 6% are water over a limit.

How far over the limit

at the limit2×5×10×100×+ArsenicTrihalomethanes (TTHM)2024-04-01 · Arsenic: measured 0.0115 MG/L vs limit 0.0100 MG/L (1.1×)2024-01-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2023-10-01 · Arsenic: measured 0.0203 MG/L vs limit 0.0100 MG/L (2.0×)2023-07-01 · Arsenic: measured 0.0223 MG/L vs limit 0.0100 MG/L (2.2×)2023-04-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2023-01-01 · Arsenic: measured 0.0191 MG/L vs limit 0.0100 MG/L (1.9×)2022-10-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2022-07-01 · Arsenic: measured 0.0178 MG/L vs limit 0.0100 MG/L (1.8×)2022-04-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2022-01-01 · Arsenic: measured 0.0150 MG/L vs limit 0.0100 MG/L (1.5×)2021-10-01 · Arsenic: measured 0.0150 MG/L vs limit 0.0100 MG/L (1.5×)2021-07-01 · Arsenic: measured 0.0127 MG/L vs limit 0.0100 MG/L (1.3×)2021-07-01 · Trihalomethanes (TTHM): measured 0.0982 MG/L vs limit 0.0800 MG/L (1.2×)2021-04-01 · Trihalomethanes (TTHM): measured 0.0935 MG/L vs limit 0.0800 MG/L (1.2×)2021-04-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2021-01-01 · Trihalomethanes (TTHM): measured 0.0919 MG/L vs limit 0.0800 MG/L (1.1×)2021-01-01 · Arsenic: measured 0.0135 MG/L vs limit 0.0100 MG/L (1.3×)2020-10-01 · Arsenic: measured 0.0145 MG/L vs limit 0.0100 MG/L (1.4×)2020-10-01 · Trihalomethanes (TTHM): measured 0.0887 MG/L vs limit 0.0800 MG/L (1.1×)2020-07-01 · Arsenic: measured 0.0155 MG/L vs limit 0.0100 MG/L (1.6×)2020-04-01 · Arsenic: measured 0.0175 MG/L vs limit 0.0100 MG/L (1.8×)2020-01-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2019-10-01 · Arsenic: measured 0.0163 MG/L vs limit 0.0100 MG/L (1.6×)2019-07-01 · Arsenic: measured 16.00 UG/L vs limit 10.00 UG/L (1.6×)2019-04-01 · Arsenic: measured 13.33 UG/L vs limit 10.00 UG/L (1.3×)2019-01-01 · Arsenic: measured 12.50 UG/L vs limit 10.00 UG/L (1.2×)2018-10-01 · Arsenic: measured 11.75 UG/L vs limit 10.00 UG/L (1.2×)2018-10-01 · Trihalomethanes (TTHM): measured 82.08 UG/L vs limit 80.00 UG/L (1.0×)2018-07-01 · Arsenic: measured 0.0118 MG/L vs limit 0.0100 MG/L (1.2×)2018-04-01 · Trihalomethanes (TTHM): measured 0.1085 MG/L vs limit 0.0800 MG/L (1.4×)2018-04-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2018-01-01 · Trihalomethanes (TTHM): measured 95.45 UG/L vs limit 80.00 UG/L (1.2×)2017-10-01 · Trihalomethanes (TTHM): measured 0.0990 MG/L vs limit 0.0800 MG/L (1.2×)2017-07-01 · Trihalomethanes (TTHM): measured 0.0891 MG/L vs limit 0.0800 MG/L (1.1×)
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

0 ppb
0 ppb
0 ppb
0 ppb
0 ppb

Open now (2)

  1. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  2. 2024-08-03Groundwater RuleFailure To Address DeficiencyOpen

Every violation on record

  1. 2025-07-31Public NoticePN Violation for NPDWR ViolationBack in compliance
  2. 2025-07-01Consumer Confidence RuleCCR Complete Failure to ReportOpen
  3. 2025-07-01ArsenicMonitoring, RegularBack in compliance
  4. 2025-03-06Public NoticePN Violation for NPDWR ViolationBack in compliance
  5. 2025-01-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  6. 2025-01-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  7. 2025-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  8. 2024-12-06Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2024-11-19Public NoticePN Violation without NPDWR ViolationBack in compliance
  10. 2024-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  11. 2024-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Period ended · no return to compliance on file
  12. 2024-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  13. 2024-10-01Revised Total Coliform RuleMONBack in compliance
  14. 2024-08-03Groundwater RuleFailure To Address DeficiencyOpen
  15. 2024-08-03Groundwater RuleFailure To Address DeficiencyBack in compliance
  16. 2024-07-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  17. 2024-05-05Public NoticePN Violation without NPDWR ViolationBack in compliance
  18. 2024-04-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  19. 2024-04-04Revised Total Coliform RuleOtherBack in compliance
  20. 2024-04-04Unknown contaminantRecord KeepingBack in compliance
  21. 2024-04-01ArsenicMCL, Averagemeasured 0.0115 MG/L · limit 0.0100 MG/LBack in compliance
  22. 2024-02-05Public NoticePN Violation for NPDWR ViolationBack in compliance
  23. 2024-01-01DalaponMonitoring, RegularPeriod ended · no return to compliance on file
  24. 2024-01-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  25. 2023-11-22Public NoticePN Violation for NPDWR ViolationBack in compliance
Show the other 81 entries
  1. 2023-10-01ArsenicMCL, Averagemeasured 0.0203 MG/L · limit 0.0100 MG/LBack in compliance
  2. 2023-08-06Public NoticePN Violation for NPDWR ViolationBack in compliance
  3. 2023-07-01ArsenicMCL, Averagemeasured 0.0223 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  4. 2023-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  5. 2023-04-01DalaponMonitoring, RegularBack in compliance
  6. 2023-04-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  7. 2023-01-01ArsenicMCL, Averagemeasured 0.0191 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  8. 2022-10-07Public NoticePN Violation for NPDWR ViolationBack in compliance
  9. 2022-10-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2022-07-01ArsenicMCL, Averagemeasured 0.0178 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  11. 2022-07-01Public NoticePN Violation for NPDWR ViolationBack in compliance
  12. 2022-04-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  13. 2022-01-01ArsenicMCL, Averagemeasured 0.0150 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  14. 2021-10-01ArsenicMCL, Averagemeasured 0.0150 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  15. 2021-07-14Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  16. 2021-07-01ArsenicMCL, Averagemeasured 0.0127 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  17. 2021-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0982 MG/L · limit 0.0800 MG/LBack in compliance
  18. 2021-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0935 MG/L · limit 0.0800 MG/LBack in compliance
  19. 2021-04-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  20. 2021-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0919 MG/L · limit 0.0800 MG/LBack in compliance
  21. 2021-01-01ArsenicMCL, Averagemeasured 0.0135 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  22. 2020-10-08Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  23. 2020-10-01ArsenicMCL, Averagemeasured 0.0145 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  24. 2020-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0887 MG/L · limit 0.0800 MG/LBack in compliance
  25. 2020-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  26. 2020-10-01Revised Total Coliform RuleMONBack in compliance
  27. 2020-07-13Public NoticePN Violation for NPDWR ViolationBack in compliance
  28. 2020-07-01ArsenicMCL, Averagemeasured 0.0155 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  29. 2020-04-01ArsenicMCL, Averagemeasured 0.0175 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  30. 2020-01-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  31. 2019-10-24Revised Total Coliform RuleOtherBack in compliance
  32. 2019-10-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  33. 2019-10-01ArsenicMCL, Averagemeasured 0.0163 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  34. 2019-09-13Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  35. 2019-07-07Public NoticePN Violation for NPDWR ViolationBack in compliance
  36. 2019-07-01ArsenicMCL, Averagemeasured 16.00 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  37. 2019-04-01ArsenicMCL, Averagemeasured 13.33 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  38. 2019-01-01ArsenicMCL, Averagemeasured 12.50 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  39. 2019-01-01Lead and Copper RuleLead Consumer NoticeBack in compliance
  40. 2018-11-01Revised Total Coliform RuleMONBack in compliance
  41. 2018-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  42. 2018-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  43. 2018-10-01ArsenicMonitoring, RegularBack in compliance
  44. 2018-10-01ArsenicMCL, Averagemeasured 11.75 UG/L · limit 10.00 UG/LPeriod ended · no return to compliance on file
  45. 2018-10-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  46. 2018-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 82.08 UG/L · limit 80.00 UG/LBack in compliance
  47. 2018-07-19Public NoticePN Violation for NPDWR ViolationBack in compliance
  48. 2018-07-01ArsenicMCL, Averagemeasured 0.0118 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  49. 2018-06-30Public NoticePN Violation for NPDWR ViolationBack in compliance
  50. 2018-06-10Public NoticePN Violation for NPDWR ViolationBack in compliance
  51. 2018-06-03Public NoticePN Violation for NPDWR ViolationBack in compliance
  52. 2018-04-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.1085 MG/L · limit 0.0800 MG/LBack in compliance
  53. 2018-04-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  54. 2018-03-11DBP Stage 1Treatment Technique No Certif. OperatorBack in compliance
  55. 2018-03-01Revised Total Coliform RuleMONBack in compliance
  56. 2018-01-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  57. 2018-01-01ArsenicMonitoring, RegularBack in compliance
  58. 2018-01-01Trihalomethanes (TTHM)MCL, Averagemeasured 95.45 UG/L · limit 80.00 UG/LBack in compliance
  59. 2017-12-27Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  60. 2017-10-28Public NoticePN Violation for NPDWR ViolationBack in compliance
  61. 2017-10-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0990 MG/L · limit 0.0800 MG/LBack in compliance
  62. 2017-10-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  63. 2017-10-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  64. 2017-10-01ArsenicMonitoring, RegularBack in compliance
  65. 2017-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  66. 2017-09-11Trihalomethanes (TTHM)Failure Submit IDSE/Subpart V Plan RptBack in compliance
  67. 2017-07-01ArsenicMonitoring, RegularBack in compliance
  68. 2017-07-01Total Haloacetic Acids (HAA5)Monitoring and Reporting (DBP)Back in compliance
  69. 2017-07-01Trihalomethanes (TTHM)Monitoring and Reporting (DBP)Back in compliance
  70. 2017-07-01Trihalomethanes (TTHM)MCL, Averagemeasured 0.0891 MG/L · limit 0.0800 MG/LBack in compliance
  71. 2017-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  72. 2017-04-01ArsenicMonitoring, RegularBack in compliance
  73. 2016-04-25Unknown contaminantRecord KeepingBack in compliance
  74. 2016-01-01Coliform (TCR)Monitoring, Routine Major (TCR)Back in compliance
  75. 2007-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  76. 2006-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  77. 2004-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  78. 2004-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  79. 2003-07-01Consumer Confidence RuleCCR Complete Failure to ReportBack in compliance
  80. 2002-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  81. 2001-01-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served85
Service connections28
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityCarbondale
EPA ZIP on file81623

Areas served

  • Alamosa County

Reading this record

Valley Mobile Home LLC is a community water system that draws from groundwater and serves about 85 people in Carbondale, Colorado. 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.