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Tap water quality report

Cornerstones Mud

EPA monitoring tested this supplier for 109 contaminants and detected 12. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
12
detected
5,331
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
Harris

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

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
410 µg/L 32%
of the EPA limit 1300 µg/L
 57/62 SYR4 2012–2018
Lead
5 µg/L 33%
of the EPA limit 15 µg/L
 15/62 SYR4 2012–2018
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 14/14 LCR 2024
Dibromochloromethane
1.5 µg/L
No EPA limit set
 3/12 SYR4 2013–2019
TTHM
2.6 µg/L 3.3%
of the EPA limit 80 µg/L
 3/7 SYR4 2013–2019
Arsenic
5.3 µg/L 53%
of the EPA limit 10 µg/L
 2/2 SYR4 2014–2017
Barium
158 µg/L 7.9%
of the EPA limit 2000 µg/L
 2/2 SYR4 2014–2017
Bromodichloromethane
1.1 µg/L
No EPA limit set
 2/12 SYR4 2013–2019
Combined Radium (-226 And -228)
3.8 pCi/L 76%
of the EPA limit 5 pCi/L
 2/2 SYR4 2014–2017
Fluoride
360 µg/L 9%
of the EPA limit 4000 µg/L
 2/2 SYR4 2014–2017
Gross Alpha, Excl. Radon And U
5.4 pCi/L 36%
of the EPA limit 15 pCi/L
 2/2 SYR4 2014–2017
Lithium
20.3 µg/L
No EPA limit set
 2/2 UCMR-5 2023
97 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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitrateNitrate-NitriteNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
STAGG, MORGAN
Phone
713-951-0800

Frequently asked questions about Cornerstones Mud

Is Cornerstones Mud tap water safe to drink?

EPA monitoring detected 12 contaminants in Cornerstones Mud'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 Cornerstones Mud's water?

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

How many people does Cornerstones Mud serve?

Cornerstones Mud reports serving 5,331 people in Texas, per its EPA record.

Has Cornerstones Mud had any water quality violations?

The EPA has no formal drinking-water violations on file for Cornerstones Mud.

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.