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Public water system record

Jonah Water SUD

Serves an area of Williamson County, TX that includes Hutto, Georgetown and Weir · 29,861 people served

Federal records show 2 health-based violations and 1 monitoring/reporting issue for Jonah Water SUD in the last ten years. The most serious issue in this window was a resolved Total Trihalomethanes (TTHMs) violation.

  • TX2460022
  • HUTTO
  • TX
  • 29,861 served

System profile

Source water Purchased surface water
ZIP 78634
EPA system ID TX2460022

Verify this system on EPA ECHO →

Health-based violations, last 10 years
2
Resolved
2
Unresolved
0
Any acute record
No
Monitoring issues, last 10 years
1

Key facts

  • Jonah Water SUD draws water from 10 wells (1 of them for emergency, seasonal or other part-time use).
  • Highest measured level in the last 10 years: Total Trihalomethanes (TTHMs), 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit), 2018.
  • Most recent formal enforcement: compliance order with a penalty by Texas, October 2016.
  • Record on file since 1979, with 11 health-based violations before October 19, 2016.
  • Lead pipe inventory: 0 lead and 0 unknown out of 14,301 service lines.

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Health-based violations

Since October 2016

Violation data reflects EPA records through March 2026. For the most current status, visit the EPA ECHO database.

Contaminant Rule family Start date Status Acute
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.081 mg/L, federal limit 0.08 mg/L (at or just above the limit)
 220 Apr 1, 2019 Resolved No
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.084 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 220 Jul 1, 2018 Resolved No

Monitoring and reporting issues

Since October 2016

Missed tests or reports, not contaminants found above a limit.

Issue Start date Status
E. coli
Monitoring and reporting
 Oct 11, 2023 Resolved

Full record since 1979

EPA's records for Jonah Water SUD go back to 1979. Before October 19, 2016 they list 11 health-based violations (8 resolved, 3 archived by EPA without a recorded fix) and 6 monitoring or reporting violations.

Violations that began in Health-based Monitoring and reporting
1970s 2 0
1980s 1 0
1990s 0 1
2000s 6 2
2010 to October 18, 2016 2 3
October 19, 2016 to 2019 2 0
2020s 0 1

Most recent health-based violation before October 19, 2016: Total Trihalomethanes (TTHMs), began October 2015, Resolved.

Show all 11 health-based violations before October 19, 2016
Contaminant Start date Status
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.085 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Oct 1, 2015 Resolved
Total Trihalomethanes (TTHMs)
Contaminant limit exceeded
Measured 0.087 mg/L, federal limit 0.08 mg/L (1.1 times the limit)
 Jul 1, 2015 Resolved
Total Coliform
Contaminant limit exceeded
 Jul 1, 2008 Resolved
Fluoride
Contaminant limit exceeded
Measured 4.3 mg/L, federal limit 4 mg/L (1.1 times the limit)
 Jul 1, 2006 Resolved
Fluoride
Contaminant limit exceeded
Measured 4.166667 mg/L, federal limit 4 mg/L (at or just above the limit)
 Apr 1, 2006 Resolved
Fluoride
Contaminant limit exceeded
Measured 4.166667 mg/L, federal limit 4 mg/L (at or just above the limit)
 Oct 1, 2005 Resolved
Fluoride
Contaminant limit exceeded
Measured 4.2 mg/L, federal limit 4 mg/L (1.1 times the limit)
 Jul 1, 2005 Resolved
Fluoride
Contaminant limit exceeded
Measured 4.166667 mg/L, federal limit 4 mg/L (at or just above the limit)
 Apr 1, 2005 Resolved
Fluoride
Contaminant limit exceeded
 May 19, 1983 Archived
Fluoride
Contaminant limit exceeded
 Jun 26, 1979 Archived
Fluoride
Contaminant limit exceeded
 Jun 26, 1979 Archived

Enforcement actions

Texas regulators took 1 formal enforcement action against Jonah Water SUD in 2016. The most recent was a compliance order with a penalty in October 2016.

Date By Action Violations covered
Oct 25, 2016 Texas Compliance order with a penalty 3 violations (2 health-based): Total Trihalomethanes (TTHMs), Public Notice

What the violations mean

Total Trihalomethanes (TTHMs)

2 incidents

Disinfection byproduct levels exceeded the federal limit

Long-term TTHM exposure may increase bladder cancer risk

Where the water comes from

Jonah Water SUD draws water from 10 wells (1 of them for emergency, seasonal or other part-time use). It also buys water from Brazos River Authority Granger Lake Regi. It also has an emergency connection to City of Round Rock.

Buys water from

Emergency or part-time connections to

Annual water quality report

Jonah Water SUD must give its customers an annual water quality report (Consumer Confidence Report) by July 1, with the levels its tests found in the previous year.

Systems serving 10,000 or more people must mail or deliver the report to every customer, and from 2027 they must send it twice a year.

Find a posted report with EPA's Consumer Confidence Report search

Testing your own water

To test the water at your tap, or a private well this record does not cover, use a laboratory certified for drinking water by Texas.

Certified drinking water labs by state EPA guidance for private wells