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Tap water quality report

Texas State University - San Marcos

EPA monitoring tested this supplier for 108 contaminants and detected 16. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
16
detected
43,552
people served
3
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
State 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.

3
health-based violations
51
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2015-04-01
TT Health-based Resolved 2015-04-01
TT Health-based Resolved 2015-04-01
RPT Monitoring Resolved 2025-07-02
MON Monitoring Resolved 2018-01-01 → 2018-01-31
MON Monitoring Resolved 2018-01-01 → 2018-01-31
MON Monitoring Resolved 2018-01-01 → 2018-01-31
MON Monitoring Resolved 2018-01-01 → 2018-01-31
MON Monitoring Resolved 2017-12-01 → 2017-12-31
MON Monitoring Resolved 2017-12-01 → 2017-12-31

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 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
1700 µg/L 131%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 2300 µg/L
420/426 SYR4 2012–2019
Lead
4.37 µg/L 29%
of the EPA limit 15 µg/L
worst single sample: 41 µg/L
144/426 SYR4 2012–2019
Bromoform
4.825 µg/L
No EPA limit set
worst single sample: 15.1 µg/L
106/107 SYR4 2012–2019
Dibromochloromethane
7.425 µg/L
No EPA limit set
worst single sample: 12.3 µg/L
106/107 SYR4 2012–2019
TTHM
18.59 µg/L 23%
of the EPA limit 80 µg/L
worst single sample: 30.9 µg/L
102/102 SYR4 2012–2019
Bromodichloromethane
4.455 µg/L
No EPA limit set
worst single sample: 8.6 µg/L
84/107 SYR4 2012–2019
Dibromoacetic Acid
2.66 µg/L
No EPA limit set
worst single sample: 4.2 µg/L
77/102 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
3.5 µg/L 5.8%
of the EPA limit 60 µg/L
worst single sample: 5.1 µg/L
77/102 SYR4 2012–2019
Chloroform
2.63 µg/L
No EPA limit set
worst single sample: 3.2 µg/L
30/107 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 24/24 LCR 2023
Nitrate
2010 µg/L 20%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Dichloroacetic Acid
1.87 µg/L
No EPA limit set
worst single sample: 2 µg/L
14/102 SYR4 2012–2019
Barium
41.86 µg/L 2.1%
of the EPA limit 2000 µg/L
worst single sample: 42.2 µg/L
3/3 SYR4 2016–2019
Nitrate-Nitrite
1994 µg/L 20%
of the EPA limit 10000 µg/L
worst single sample: 2010 µg/L
3/3 SYR4 2012–2015
Fluoride
199.5 µg/L 5%
of the EPA limit 4000 µg/L
worst single sample: 200 µg/L
2/2 SYR4 2014–2017
Lithium
9.5 µg/L
No EPA limit set
 1/2 UCMR-5 2025
92 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TEAGUE, CARL
Phone
512-245-8629
Email
[email protected]

Frequently asked questions about Texas State University - San Marcos

Is Texas State University - San Marcos tap water safe to drink?

EPA monitoring detected 16 contaminants in Texas State University - San Marcos'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 Texas State University - San Marcos's water?

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

How many people does Texas State University - San Marcos serve?

Texas State University - San Marcos reports serving 43,552 people in Texas, per its EPA record.

Has Texas State University - San Marcos had any water quality violations?

The EPA has 51 violations on file for Texas State University - San Marcos, of which 3 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.