Community Water System · PWSID TX2200045

Cottonwood Hills Estates

Serves 303 peopleGroundwaterOwner: PrivateAustin, Texas
Nothing open right now.

On record since 2010: 49 violations. 12 over the limit · 36 missed or late tests · 1 notice or report. Most recent began 2024-10-01.

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

12Over the limit
0Treatment lapse
36Missed or late test
1Notice or report

More violations on record than 90% 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

20052010 · Missed or late test: 120102013 · Missed or late test: 120152017 · Over the limit: 52017 · Over the limit: 52018 · Over the limit: 62018 · Over the limit: 62019 · Over the limit: 12020 · Notice or report: 120202024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342024 · Missed or late test: 342025
One square ≈ 3 violations (rounded up), by the year they began. Empty columns are years with nothing on EPA's record.
24% over the limit · 1273% missed or late test · 362% notice or report · 1

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×+Gross Alpha, Excl. Radon and UCombined Radium (-226 and...2019-04-01 · Gross Alpha, Excl. Radon and U: measured 16.00 PCI/L vs limit 15.00 PCI/L (1.1×)2018-10-01 · Gross Alpha, Excl. Radon and U: measured 17.00 PCI/L vs limit 15.00 PCI/L (1.1×)2018-07-01 · Gross Alpha, Excl. Radon and U: measured 17.00 PCI/L vs limit 15.00 PCI/L (1.1×)2018-04-01 · Combined Radium (-226 and -228): measured 6.00 PCI/L vs limit 5.00 PCI/L (1.2×)2018-04-01 · Gross Alpha, Excl. Radon and U: measured 16.00 PCI/L vs limit 15.00 PCI/L (1.1×)2018-01-01 · Gross Alpha, Excl. Radon and U: measured 18.00 PCI/L vs limit 15.00 PCI/L (1.2×)2018-01-01 · Combined Radium (-226 and -228): measured 6.00 PCI/L vs limit 5.00 PCI/L (1.2×)2017-10-01 · Gross Alpha, Excl. Radon and U: measured 16.00 PCI/L vs limit 15.00 PCI/L (1.1×)2017-10-01 · Combined Radium (-226 and -228): measured 6.00 PCI/L vs limit 5.00 PCI/L (1.2×)2017-07-01 · Gross Alpha, Excl. Radon and U: measured 17.00 PCI/L vs limit 15.00 PCI/L (1.1×)2017-07-01 · Combined Radium (-226 and -228): measured 6.00 PCI/L vs limit 5.00 PCI/L (1.2×)2017-04-01 · Gross Alpha, Excl. Radon and U: measured 16.00 PCI/L vs limit 15.00 PCI/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 4 results on file · action level 15 ppb

36.2 ppb
2.3 ppb
1.6 ppb
0 ppb

Every violation on record

  1. 2024-10-01Chlordane ×2Monitoring, RegularPeriod ended · no return to compliance on file
  2. 2024-10-01Pentachlorophenol ×2Monitoring, RegularPeriod ended · no return to compliance on file
  3. 2024-10-01Benzo(a)pyrene ×2Monitoring, RegularPeriod ended · no return to compliance on file
  4. 2024-10-01Hexachlorobenzene ×2Monitoring, RegularPeriod ended · no return to compliance on file
  5. 2024-10-01Heptachlor epoxide ×2Monitoring, RegularPeriod ended · no return to compliance on file
  6. 2024-10-01Heptachlor ×2Monitoring, RegularPeriod ended · no return to compliance on file
  7. 2024-10-01Lasso ×2Monitoring, RegularPeriod ended · no return to compliance on file
  8. 2024-10-01Atrazine ×2Monitoring, RegularPeriod ended · no return to compliance on file
  9. 2024-10-01Hexachlorocyclopentadiene ×2Monitoring, RegularPeriod ended · no return to compliance on file
  10. 2024-10-01Di(2-ethylhexyl) phthalate ×2Monitoring, RegularPeriod ended · no return to compliance on file
  11. 2024-10-01Simazine ×2Monitoring, RegularPeriod ended · no return to compliance on file
  12. 2024-10-01Di(2-ethylhexyl) adipate ×2Monitoring, RegularPeriod ended · no return to compliance on file
  13. 2024-10-01Toxaphene ×2Monitoring, RegularPeriod ended · no return to compliance on file
  14. 2024-10-01Methoxychlor ×2Monitoring, RegularPeriod ended · no return to compliance on file
  15. 2024-10-01Bhc-Gamma ×2Monitoring, RegularPeriod ended · no return to compliance on file
  16. 2024-10-01Endrin ×2Monitoring, RegularPeriod ended · no return to compliance on file
  17. 2024-10-01NitrateMonitoring, RegularPeriod ended · no return to compliance on file
  18. 2024-09-29Lead and Copper RuleLead Consumer NoticeBack in compliance
  19. 2020-01-29Public NoticePN Violation for NPDWR ViolationBack in compliance
  20. 2019-04-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 16.00 PCI/L · limit 15.00 PCI/LBack in compliance
  21. 2018-10-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 17.00 PCI/L · limit 15.00 PCI/LBack in compliance
  22. 2018-07-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 17.00 PCI/L · limit 15.00 PCI/LBack in compliance
  23. 2018-04-01Combined Radium (-226 and -228)MCL, Averagemeasured 6.00 PCI/L · limit 5.00 PCI/LBack in compliance
  24. 2018-04-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 16.00 PCI/L · limit 15.00 PCI/LBack in compliance
  25. 2018-01-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 18.00 PCI/L · limit 15.00 PCI/LBack in compliance
Show the other 8 entries
  1. 2018-01-01Combined Radium (-226 and -228)MCL, Averagemeasured 6.00 PCI/L · limit 5.00 PCI/LBack in compliance
  2. 2017-10-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 16.00 PCI/L · limit 15.00 PCI/LBack in compliance
  3. 2017-10-01Combined Radium (-226 and -228)MCL, Averagemeasured 6.00 PCI/L · limit 5.00 PCI/LBack in compliance
  4. 2017-07-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 17.00 PCI/L · limit 15.00 PCI/LBack in compliance
  5. 2017-07-01Combined Radium (-226 and -228)MCL, Averagemeasured 6.00 PCI/L · limit 5.00 PCI/LBack in compliance
  6. 2017-04-01Gross Alpha, Excl. Radon and UMCL, Averagemeasured 16.00 PCI/L · limit 15.00 PCI/LBack in compliance
  7. 2013-12-30Lead and Copper RuleLead Consumer NoticeBack in compliance
  8. 2010-10-01Lead and Copper RuleFollow-up Or Routine LCR Tap M/RBack in compliance

System details

Population served303
Service connections101
Water sourceGroundwater
System typeCommunity Water System
OwnerPrivate
StatusActive
CityAustin
EPA ZIP on file78723-2476

Areas served

  • Tarrant County

Reading this record

Cottonwood Hills Estates is a community water system that draws from groundwater and serves about 303 people in Austin, 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.