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Tap water quality report

City of Hays

EPA monitoring tested this supplier for 78 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

78
contaminants tested
16
detected
270
people served
2
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
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.

2
health-based violations
32
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1993-03-01 → 1993-03-31
MCL Health-based Archived 1993-03-01 → 1993-03-31
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2025-07-01
Other Monitoring Resolved 2016-07-11
Other Monitoring Resolved 2016-07-11
Other Monitoring Resolved 2015-10-10
Other Monitoring Resolved 2015-10-10
MR Monitoring Resolved 2015-10-01
MR Monitoring Resolved 2015-10-01

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
Nitrate
2390 µg/L 24%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Copper
200 µg/L 15%
of the EPA limit 1300 µg/L
 11/11 SYR4 2016–2017
Bromodichloromethane
4.8 µg/L
No EPA limit set
 9/9 SYR4 2013–2019
Bromoform
6.9 µg/L
No EPA limit set
 9/9 SYR4 2013–2019
Chloroform
3 µg/L
No EPA limit set
 9/9 SYR4 2013–2019
Dibromochloromethane
9 µg/L
No EPA limit set
 9/9 SYR4 2013–2019
Lead
11 µg/L 73%
of the EPA limit 15 µg/L
 6/11 SYR4 2016–2017
Lead
0.00056 mg/L 3.7%
of the EPA limit 0.0150 mg/L
 5/5 LCR 2023
Dichloroacetic Acid
2.1 µg/L
No EPA limit set
 3/3 SYR4 2013–2019
Fluoride
150 µg/L 3.8%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
TTHM
22.7 µg/L 28%
of the EPA limit 80 µg/L
 3/3 SYR4 2013–2019
Total Haloacetic Acids (HAA5)
5 µg/L 8.3%
of the EPA limit 60 µg/L
 3/3 SYR4 2013–2019
Xylenes, Total
1.2 µg/L 0%
of the EPA limit 10000 µg/L
 3/6 SYR4 2015–2019
Barium
45.1 µg/L 2.3%
of the EPA limit 2000 µg/L
 2/2 SYR4 2016–2019
Dibromoacetic Acid
3.5 µg/L
No EPA limit set
 2/3 SYR4 2013–2019
Nitrate-Nitrite
1900 µg/L 19%
of the EPA limit 10000 µg/L
 2/2 SYR4 2014–2019
62 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalArsenicAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
ODOM, LARRY
Phone
512-295-4792
Email
cityofhays@cityofhays.org

Frequently asked questions about City of Hays

Is City of Hays tap water safe to drink?

EPA monitoring detected 16 contaminants in City of Hays'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 City of Hays's water?

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

How many people does City of Hays serve?

City of Hays reports serving 270 people in Texas, per its EPA record.

Has City of Hays had any water quality violations?

The EPA has 32 violations on file for City of Hays, of which 2 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.