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Tap water quality report

Mason Creek Utility District

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
8,900
people served
1
health-based violations
Texas rankingsLead in TexasPFAS in Texas
Water source
Ground water
Ownership
Local government
Counties served
Harris

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.

1
health-based violations
66
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1992-11-01 → 1992-11-30
MR Monitoring Resolved 2019-12-30
MR Monitoring Resolved 2019-12-30
MR Monitoring Resolved 2017-04-01 → 2017-06-30
MR Monitoring Resolved 2017-04-01 → 2017-06-30
MR Monitoring Resolved 2017-04-01 → 2017-06-30
MR Monitoring Resolved 2017-04-01 → 2017-06-30
Other Monitoring Resolved 2016-02-08
Other Monitoring Resolved 2016-02-08
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
Copper
990 µg/L 76%
of the EPA limit 1300 µg/L
 107/126 SYR4 2013–2019
Lead
87 µg/L 580%
of the EPA limit, in the worst sample — 15 µg/L
 67/126 SYR4 2013–2019
Nitrate
20 µg/L 0.2%
of the EPA limit 10000 µg/L
 26/50 SYR4 2012–2019
Lead
0.0021 mg/L 14%
of the EPA limit 0.0150 mg/L
 16/16 LCR 2025
Arsenic
7.6 µg/L 76%
of the EPA limit 10 µg/L
 6/6 SYR4 2014–2017
Barium
242 µg/L 12%
of the EPA limit 2000 µg/L
 6/6 SYR4 2014–2017
Fluoride
580 µg/L 14%
of the EPA limit 4000 µg/L
 6/6 SYR4 2014–2017
Nitrate-Nitrite
20 µg/L 0.2%
of the EPA limit 10000 µg/L
 6/10 SYR4 2012–2015
Lithium
36 µg/L
No EPA limit set
 6/6 UCMR-5 2024
Combined Radium (-226 And -228)
2.92 pCi/L 58%
of the EPA limit 5 pCi/L
 3/3 SYR4 2013–2019
Dibromochloromethane
1.7 µg/L
No EPA limit set
 3/25 SYR4 2013–2019
Gross Beta Particle Activity
5.7 pCi/L
No EPA limit set
 3/5 SYR4 2012–2019
Bromoform
1.4 µg/L
No EPA limit set
 2/25 SYR4 2013–2019
Gross Alpha, Excl. Radon And U
9 pCi/L 60%
of the EPA limit 15 pCi/L
 2/3 SYR4 2016–2019
TTHM
2.2 µg/L 2.8%
of the EPA limit 80 µg/L
 2/10 SYR4 2013–2019
Combined Uranium
4.6 µg/L 15%
of the EPA limit 30 µg/L
 1/3 SYR4 2016–2019
Selenium
3.6 µg/L 7.2%
of the EPA limit 50 µg/L
 1/6 SYR4 2014–2017
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, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDichloroacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
CONNOLLY, BRIAN
Phone
281-578-7272

Frequently asked questions about Mason Creek Utility District

Is Mason Creek Utility District tap water safe to drink?

EPA monitoring detected 17 contaminants in Mason Creek Utility District'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 Mason Creek Utility District's water?

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

How many people does Mason Creek Utility District serve?

Mason Creek Utility District reports serving 8,900 people in Texas, per its EPA record.

Has Mason Creek Utility District had any water quality violations?

The EPA has 66 violations on file for Mason Creek Utility District, of which 1 is 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.