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Tap water quality report

County Line Sud

EPA monitoring tested this supplier for 109 contaminants and detected 23. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
23
detected
19,609
people served
4
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
SWP
Ownership
Local government
Counties served
Hays

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.

4
health-based violations
26
violations on file
3
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2015-04-01 → 2015-04-30
MCL Health-based Resolved 2015-04-01 → 2015-04-30
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
MR Monitoring Resolved 2025-04-01
MR Monitoring Resolved 2025-04-01
MR Monitoring Resolved 2023-12-30
MR Monitoring Resolved 2023-12-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfpea 0.0045 µg/L 2/5 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
2300 µg/L 177%
of the EPA limit, in the worst sample — 1300 µg/L
 79/81 SYR4 2014–2019
Dibromochloromethane
26 µg/L
No EPA limit set
 54/67 SYR4 2012–2019
TTHM
157 µg/L 196%
of the EPA limit, in the worst sample — 80 µg/L
 53/62 SYR4 2012–2019
Bromodichloromethane
40.1 µg/L
No EPA limit set
 52/67 SYR4 2012–2019
Lead
17 µg/L 113%
of the EPA limit, in the worst sample — 15 µg/L
 42/81 SYR4 2014–2019
Dichloroacetic Acid
54.4 µg/L
No EPA limit set
 38/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
76.3 µg/L 127%
of the EPA limit, in the worst sample — 60 µg/L
 38/62 SYR4 2012–2019
Chloroform
90.9 µg/L
No EPA limit set
 36/67 SYR4 2012–2019
Bromoform
9.9 µg/L
No EPA limit set
 34/67 SYR4 2012–2019
Dibromoacetic Acid
8.7 µg/L
No EPA limit set
 27/62 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Monochloroacetic Acid
12.3 µg/L
No EPA limit set
 9/62 SYR4 2012–2019
Trichloroacetic Acid
7.8 µg/L
No EPA limit set
 7/62 SYR4 2012–2019
Barium
67.2 µg/L 3.4%
of the EPA limit 2000 µg/L
 2/2 SYR4 2016–2019
Fluoride
3120 µg/L 78%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Monobromoacetic Acid
1.6 µg/L
No EPA limit set
 2/62 SYR4 2012–2019
Nitrate
30 µg/L 0.3%
of the EPA limit 10000 µg/L
 2/16 SYR4 2012–2019
Lithium
11.9 µg/L
No EPA limit set
 2/5 UCMR-5 2025
Cyanide
20 µg/L 10%
of the EPA limit 200 µg/L
 1/2 SYR4 2014–2017
Combined Radium (-226 And -228)
1.1 pCi/L 22%
of the EPA limit 5 pCi/L
 1/2 SYR4 2012–2018
Gross Alpha, Excl. Radon And U
5.5 pCi/L 37%
of the EPA limit 15 pCi/L
 1/1 SYR4 2018
Gross Beta Particle Activity
5.6 pCi/L
No EPA limit set
 1/2 SYR4 2012–2018
86 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNetfosaaNfdhaNmefosaaNitrate-NitriteNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
NAJDAWI, FARAH
Phone
512-398-4748

Frequently asked questions about County Line Sud

Is County Line Sud tap water safe to drink?

EPA monitoring detected 23 contaminants in County Line Sud'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 County Line Sud's water?

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

How many people does County Line Sud serve?

County Line Sud reports serving 19,609 people in Texas, per its EPA record.

Has County Line Sud had any water quality violations?

The EPA has 26 violations on file for County Line Sud, of which 4 are health-based (a contaminant limit or required treatment was breached) and 3 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.