Community Water System · PWSID TX0930034

Tdcj Pack Unit

Serves 1,597 peopleGroundwaterOwner: StateHuntsville, Texas
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 2006: 79 violations. 52 over the limit · 1 treatment lapse · 20 missed or late tests · 6 notices or reports. Most recent began 2025-09-29.

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

52Over the limit
1Treatment lapse
20Missed or late test1 open
6Notice or report

More violations on record than 95% of active water systems in Texas. Small systems with no staff chemist often rack up missed-test violations; big utilities rarely do.

The record, year by year

20052006 · Over the limit: 22007 · Over the limit: 42007 · Over the limit: 42008 · Over the limit: 42008 · Over the limit: 42009 · Over the limit: 42009 · Over the limit: 42010 · Over the limit: 42010 · Over the limit: 420102011 · Over the limit: 42011 · Over the limit: 42012 · Over the limit: 42012 · Over the limit: 42012 · Missed or late test: 12012 · Notice or report: 12013 · Over the limit: 42013 · Over the limit: 42014 · Over the limit: 42014 · Over the limit: 42015 · Over the limit: 52015 · Over the limit: 52015 · Over the limit: 52015 · Missed or late test: 120152016 · Over the limit: 42016 · Over the limit: 42017 · Over the limit: 120202022 · Missed or late test: 12023 · Over the limit: 32023 · Over the limit: 32023 · Missed or late test: 152023 · Missed or late test: 152023 · Missed or late test: 152023 · Missed or late test: 152023 · Missed or late test: 152023 · Missed or late test: 152023 · Missed or late test: 152023 · Missed or late test: 152023 · Notice or report: 22024 · Over the limit: 22024 · Treatment lapse: 12024 · Missed or late test: 12024 · Notice or report: 22025 · Over the limit: 32025 · Over the limit: 32025 · Missed or late test: 12025 · 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.
66% over the limit · 521% treatment lapse · 125% missed or late test · 208% notice or report · 6

Across Texas, 60% of violations are missed or late tests and 10% are water over a limit.

How far over the limit

at the limit2×5×10×100×+Arsenic2025-07-01 · Arsenic: measured 0.0270 MG/L vs limit 0.0100 MG/L (2.7×)2025-04-01 · Arsenic: measured 0.0270 MG/L vs limit 0.0100 MG/L (2.7×)2025-01-01 · Arsenic: measured 0.0260 MG/L vs limit 0.0100 MG/L (2.6×)2024-10-01 · Arsenic: measured 0.0220 MG/L vs limit 0.0100 MG/L (2.2×)2024-07-01 · Arsenic: measured 0.0150 MG/L vs limit 0.0100 MG/L (1.5×)2023-07-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2023-04-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2023-01-01 · Arsenic: measured 0.0140 MG/L vs limit 0.0100 MG/L (1.4×)2017-01-01 · Arsenic: measured 0.0130 MG/L vs limit 0.0100 MG/L (1.3×)2016-10-01 · Arsenic: measured 0.0160 MG/L vs limit 0.0100 MG/L (1.6×)2016-07-01 · Arsenic: measured 0.0140 MG/L vs limit 0.0100 MG/L (1.4×)2016-04-01 · Arsenic: measured 0.0170 MG/L vs limit 0.0100 MG/L (1.7×)2016-01-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2015-10-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2015-07-01 · Arsenic: measured 0.0250 MG/L vs limit 0.0100 MG/L (2.5×)2015-04-01 · Arsenic: measured 0.0250 MG/L vs limit 0.0100 MG/L (2.5×)2015-01-01 · Arsenic: measured 0.0240 MG/L vs limit 0.0100 MG/L (2.4×)2014-10-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2014-07-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2014-04-01 · Arsenic: measured 0.0190 MG/L vs limit 0.0100 MG/L (1.9×)2014-01-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2013-10-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2013-07-01 · Arsenic: measured 0.0180 MG/L vs limit 0.0100 MG/L (1.8×)2013-04-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2013-01-01 · Arsenic: measured 0.0250 MG/L vs limit 0.0100 MG/L (2.5×)2012-10-01 · Arsenic: measured 0.0280 MG/L vs limit 0.0100 MG/L (2.8×)2012-07-01 · Arsenic: measured 0.0270 MG/L vs limit 0.0100 MG/L (2.7×)2012-04-01 · Arsenic: measured 0.0280 MG/L vs limit 0.0100 MG/L (2.8×)2012-01-01 · Arsenic: measured 0.0250 MG/L vs limit 0.0100 MG/L (2.5×)2011-10-01 · Arsenic: measured 0.0310 MG/L vs limit 0.0100 MG/L (3.1×)2011-07-01 · Arsenic: measured 0.0280 MG/L vs limit 0.0100 MG/L (2.8×)2011-04-01 · Arsenic: measured 0.0230 MG/L vs limit 0.0100 MG/L (2.3×)2011-01-01 · Arsenic: measured 0.0260 MG/L vs limit 0.0100 MG/L (2.6×)2010-10-01 · Arsenic: measured 0.0260 MG/L vs limit 0.0100 MG/L (2.6×)
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 1 result on file · action level 15 ppb

1.7 ppb

Open now (1)

  1. 2025-09-29Lead and Copper RuleLead Consumer NoticeOpen

Every violation on record

  1. 2025-09-29Lead and Copper RuleLead Consumer NoticeOpen
  2. 2025-07-01ArsenicMCL, Averagemeasured 0.0270 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  3. 2025-05-15Public NoticePN Violation for NPDWR ViolationBack in compliance
  4. 2025-04-01ArsenicMCL, Averagemeasured 0.0270 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  5. 2025-01-01ArsenicMCL, Averagemeasured 0.0260 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  6. 2024-12-05Public NoticePN Violation for NPDWR ViolationBack in compliance
  7. 2024-10-17Lead service line inventoryRPTBack in compliance
  8. 2024-10-17Lead service line inventoryTTBack in compliance
  9. 2024-10-01ArsenicMCL, Averagemeasured 0.0220 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  10. 2024-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance
  11. 2024-07-01ArsenicMCL, Averagemeasured 0.0150 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  12. 2023-12-08Public NoticePN Violation for NPDWR ViolationBack in compliance
  13. 2023-10-01ArsenicMonitoring, RegularBack in compliance
  14. 2023-07-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LBack in compliance
  15. 2023-05-21Public NoticePN Violation for NPDWR ViolationBack in compliance
  16. 2023-04-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  17. 2023-01-01SeleniumMonitoring, RegularBack in compliance
  18. 2023-01-01ZincMonitoring, RegularBack in compliance
  19. 2023-01-01Thallium, TotalMonitoring, RegularBack in compliance
  20. 2023-01-01Beryllium, TotalMonitoring, RegularBack in compliance
  21. 2023-01-01Antimony, TotalMonitoring, RegularBack in compliance
  22. 2023-01-01SilverMonitoring, RegularBack in compliance
  23. 2023-01-01MercuryMonitoring, RegularBack in compliance
  24. 2023-01-01ManganeseMonitoring, RegularBack in compliance
  25. 2023-01-01IronMonitoring, RegularBack in compliance
Show the other 54 entries
  1. 2023-01-01ChromiumMonitoring, RegularBack in compliance
  2. 2023-01-01CadmiumMonitoring, RegularBack in compliance
  3. 2023-01-01BariumMonitoring, RegularBack in compliance
  4. 2023-01-01ArsenicMonitoring, RegularBack in compliance
  5. 2023-01-01AluminumMonitoring, RegularBack in compliance
  6. 2023-01-01ArsenicMCL, Averagemeasured 0.0140 MG/L · limit 0.0100 MG/LPeriod ended · no return to compliance on file
  7. 2022-04-01ChlorineMonitoring and Reporting (DBP)Back in compliance
  8. 2017-01-01ArsenicMCL, Averagemeasured 0.0130 MG/L · limit 0.0100 MG/LBack in compliance
  9. 2016-10-01ArsenicMCL, Averagemeasured 0.0160 MG/L · limit 0.0100 MG/LBack in compliance
  10. 2016-07-01ArsenicMCL, Averagemeasured 0.0140 MG/L · limit 0.0100 MG/LBack in compliance
  11. 2016-04-01ArsenicMCL, Averagemeasured 0.0170 MG/L · limit 0.0100 MG/LBack in compliance
  12. 2016-01-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  13. 2015-10-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  14. 2015-09-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  15. 2015-09-01Coliform (TCR)MCL, Monthly (TCR)Back in compliance
  16. 2015-07-01ArsenicMCL, Averagemeasured 0.0250 MG/L · limit 0.0100 MG/LBack in compliance
  17. 2015-04-01ArsenicMCL, Averagemeasured 0.0250 MG/L · limit 0.0100 MG/LBack in compliance
  18. 2015-01-01ArsenicMCL, Averagemeasured 0.0240 MG/L · limit 0.0100 MG/LBack in compliance
  19. 2014-10-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  20. 2014-07-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  21. 2014-04-01ArsenicMCL, Averagemeasured 0.0190 MG/L · limit 0.0100 MG/LBack in compliance
  22. 2014-01-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LBack in compliance
  23. 2013-10-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LBack in compliance
  24. 2013-07-01ArsenicMCL, Averagemeasured 0.0180 MG/L · limit 0.0100 MG/LBack in compliance
  25. 2013-04-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  26. 2013-01-01ArsenicMCL, Averagemeasured 0.0250 MG/L · limit 0.0100 MG/LBack in compliance
  27. 2012-10-01ArsenicMCL, Averagemeasured 0.0280 MG/L · limit 0.0100 MG/LBack in compliance
  28. 2012-07-01ArsenicMCL, Averagemeasured 0.0270 MG/L · limit 0.0100 MG/LBack in compliance
  29. 2012-05-12Public NoticePN Violation for NPDWR ViolationBack in compliance
  30. 2012-04-01ArsenicMCL, Averagemeasured 0.0280 MG/L · limit 0.0100 MG/LBack in compliance
  31. 2012-01-01ArsenicMCL, Averagemeasured 0.0250 MG/L · limit 0.0100 MG/LBack in compliance
  32. 2012-01-01E. ColiMonitoring, Source Water (GWR)Back in compliance
  33. 2011-10-01ArsenicMCL, Averagemeasured 0.0310 MG/L · limit 0.0100 MG/LBack in compliance
  34. 2011-07-01ArsenicMCL, Averagemeasured 0.0280 MG/L · limit 0.0100 MG/LBack in compliance
  35. 2011-04-01ArsenicMCL, Averagemeasured 0.0230 MG/L · limit 0.0100 MG/LBack in compliance
  36. 2011-01-01ArsenicMCL, Averagemeasured 0.0260 MG/L · limit 0.0100 MG/LBack in compliance
  37. 2010-10-01ArsenicMCL, Averagemeasured 0.0260 MG/L · limit 0.0100 MG/LBack in compliance
  38. 2010-07-01ArsenicMCL, Averagemeasured 0.0296 MG/LBack in compliance
  39. 2010-04-01ArsenicMCL, Averagemeasured 0.0348 MG/LBack in compliance
  40. 2010-01-01ArsenicMCL, Averagemeasured 0.0342 MG/LBack in compliance
  41. 2009-10-01ArsenicMCL, Averagemeasured 0.0321 MG/LBack in compliance
  42. 2009-07-01ArsenicMCL, Averagemeasured 0.0332 MG/LBack in compliance
  43. 2009-04-01ArsenicMCL, Averagemeasured 0.0301 MG/LBack in compliance
  44. 2009-01-01ArsenicMCL, Averagemeasured 0.0291 MG/LBack in compliance
  45. 2008-10-01ArsenicMCL, Averagemeasured 0.0266 MG/LBack in compliance
  46. 2008-07-01ArsenicMCL, Averagemeasured 0.0250 MG/LBack in compliance
  47. 2008-04-01ArsenicMCL, Averagemeasured 0.0244 MG/LBack in compliance
  48. 2008-01-01ArsenicMCL, Averagemeasured 0.0259 MG/LBack in compliance
  49. 2007-10-01ArsenicMCL, Averagemeasured 0.0261 MG/LBack in compliance
  50. 2007-07-01ArsenicMCL, Averagemeasured 0.0222 MG/LBack in compliance
  51. 2007-04-01ArsenicMCL, Averagemeasured 0.0236 MG/LBack in compliance
  52. 2007-01-01ArsenicMCL, Averagemeasured 0.0228 MG/LBack in compliance
  53. 2006-10-01ArsenicMCL, Averagemeasured 0.0251 MG/LBack in compliance
  54. 2006-07-01ArsenicMCL, Averagemeasured 0.0159 MG/LBack in compliance

System details

Population served1,597
Service connections532
Water sourceGroundwater
System typeCommunity Water System
OwnerState
StatusActive
CityHuntsville
EPA ZIP on file77342-4011

Areas served

  • Grimes County

Reading this record

Tdcj Pack Unit is a community water system that draws from groundwater and serves about 1,597 people in Huntsville, Texas. 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.