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Tap water quality report

Mcmullen County Calliham

EPA monitoring tested this supplier for 79 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

79
contaminants tested
18
detected
300
people served
8
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
McMullen

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
134
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2024-10-17
TT Health-based Resolved 2021-08-02
TT Health-based Resolved 2021-08-02
TT Health-based Resolved 2021-08-02
TT Health-based Resolved 2021-08-02
MR Monitoring Resolved 2026-04-01
MR Monitoring Resolved 2026-04-01

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 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
Nitrate
620 µg/L 6.2%
of the EPA limit 10000 µg/L
 18/18 SYR4 2012–2019
Copper
154.5 µg/L 12%
of the EPA limit 1300 µg/L
worst single sample: 162 µg/L
11/11 SYR4 2015–2018
Bromoform
39 µg/L
No EPA limit set
worst single sample: 40 µg/L
9/10 SYR4 2012–2019
Dibromochloromethane
19.82 µg/L
No EPA limit set
worst single sample: 21.7 µg/L
9/10 SYR4 2012–2019
Bromodichloromethane
6.62 µg/L
No EPA limit set
worst single sample: 8 µg/L
7/10 SYR4 2012–2019
Lead
0.0090 mg/L 60%
of the EPA limit 0.0150 mg/L
 7/7 LCR 2025
Lead
4.695 µg/L 31%
of the EPA limit 15 µg/L
worst single sample: 5.1 µg/L
4/11 SYR4 2015–2018
Nitrate-Nitrite
615.5 µg/L 6.2%
of the EPA limit 10000 µg/L
worst single sample: 620 µg/L
4/4 SYR4 2012–2016
Fluoride
1297 µg/L 32%
of the EPA limit 4000 µg/L
worst single sample: 1310 µg/L
3/3 SYR4 2013–2019
Barium
105.75 µg/L 5.3%
of the EPA limit 2000 µg/L
worst single sample: 106 µg/L
2/2 SYR4 2015–2018
Dibromoacetic Acid
7.625 µg/L
No EPA limit set
worst single sample: 7.7 µg/L
2/2 SYR4 2016–2019
TTHM
56.935 µg/L 71%
of the EPA limit 80 µg/L
worst single sample: 57 µg/L
2/2 SYR4 2016–2019
Total Haloacetic Acids (HAA5)
7.89 µg/L 13%
of the EPA limit 60 µg/L
worst single sample: 7.9 µg/L
2/2 SYR4 2016–2019
Chloroform
2.1 µg/L
No EPA limit set
 1/10 SYR4 2012–2019
Chromium
10.9 µg/L 11%
of the EPA limit 100 µg/L
 1/2 SYR4 2015–2018
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/1 SYR4 2015
Dichloroacetic Acid
1.7 µg/L
No EPA limit set
 1/2 SYR4 2016–2019
Selenium
3.9 µg/L 7.8%
of the EPA limit 50 µg/L
 1/2 SYR4 2015–2018
61 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 TetrachlorideChlordaneCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitriteOxamylPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
TEAL, JAMES E.
Phone
361-274-3900
Email
[email protected]

Frequently asked questions about Mcmullen County Calliham

Is Mcmullen County Calliham tap water safe to drink?

EPA monitoring detected 18 contaminants in Mcmullen County Calliham'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 Mcmullen County Calliham's water?

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

How many people does Mcmullen County Calliham serve?

Mcmullen County Calliham reports serving 300 people in Texas, per its EPA record.

Has Mcmullen County Calliham had any water quality violations?

The EPA has 134 violations on file for Mcmullen County Calliham, 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.