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Tap water quality report

Williamson County Wsid 3

EPA monitoring tested this supplier for 44 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

44
contaminants tested
15
detected
8,265
people served
8
health-based violations
Water source
GWP
Ownership
Local government
Counties served
Williamson

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

8
health-based violations
37
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2014-05-01 → 2014-05-31
MCL Health-based Resolved 2014-05-01 → 2014-05-31
MCL Health-based Resolved 2014-05-01 → 2014-05-31
MCL Health-based Resolved 2014-05-01 → 2014-05-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MCL Health-based Resolved 2010-07-01 → 2010-07-31
MR Monitoring Resolved 2024-04-01 → 2024-06-30
MR Monitoring Resolved 2024-04-01 → 2024-06-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0035 µg/L 1/2 2025
PFNA 0.0050 µg/L 1/2 2025
Pfpea 0.0031 µg/L 1/2 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
207 µg/L 16%
of the EPA limit 1300 µg/L
40/42 SYR4 2014–2017
Lead
2.4 µg/L 16%
of the EPA limit 15 µg/L
18/42 SYR4 2014–2017
Bromodichloromethane
6.5 µg/L
No EPA limit set
8/8 SYR4 2012–2019
Bromoform
5.8 µg/L
No EPA limit set
8/8 SYR4 2012–2019
Dibromochloromethane
8.7 µg/L
No EPA limit set
8/8 SYR4 2012–2019
TTHM
23.2 µg/L 29%
of the EPA limit 80 µg/L
8/8 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
5.6 µg/L 9.3%
of the EPA limit 60 µg/L
8/8 SYR4 2012–2019
Chloroform
3.6 µg/L
No EPA limit set
7/8 SYR4 2012–2019
Dibromoacetic Acid
2.5 µg/L
No EPA limit set
7/8 SYR4 2012–2019
Lead
0.00050 mg/L 3.3%
of the EPA limit 0.0150 mg/L
6/6 LCR 2023
Dichloroacetic Acid
3.1 µg/L
No EPA limit set
5/8 SYR4 2012–2019
Lithium
71.8 µg/L
No EPA limit set
2/2 UCMR-5 2025
29 contaminants tested, none detected
11Cl-PF3OUdS4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaHfpo-DaMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFOAPFOSPfpesPftaPftrdaPfunaTrichloroacetic Acid

Utility contact

Contact
RICHTER, RANCE
Phone
512-432-2300

Frequently asked questions about Williamson County Wsid 3

Is Williamson County Wsid 3 tap water safe to drink?

EPA monitoring detected 15 contaminants in Williamson County Wsid 3's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Williamson County Wsid 3's water?

EPA monitoring detected Copper, Lead, Bromodichloromethane, Bromoform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Williamson County Wsid 3 serve?

Williamson County Wsid 3 reports serving 8,265 people in Texas, per its EPA record.

Has Williamson County Wsid 3 had any water quality violations?

The EPA has 37 violations on file for Williamson County Wsid 3, of which 8 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.