Is Stanley Lake Mud Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Montgomery

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2019-12-30
MR	Monitoring	Resolved	2019-12-30
MR	Monitoring	Resolved	2017-06-01
MR	Monitoring	Resolved	2017-06-01
MR	Monitoring	Resolved	2017-06-01
MR	Monitoring	Resolved	2017-06-01
Other	Monitoring	Resolved	2012-03-11
Other	Monitoring	Resolved	2012-03-11
MR	Monitoring	Resolved	2011-12-01 → 2011-12-31
MR	Monitoring	Resolved	2011-12-01 → 2011-12-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	261.15 µg/L 20% of the EPA limit 1300 µg/L worst single sample: 644 µg/L	54/65	SYR4	2013–2019
Nitrate	65 µg/L 0.7% of the EPA limit 10000 µg/L worst single sample: 70 µg/L	26/36	SYR4	2012–2019
Bromoform	26.08 µg/L No EPA limit set worst single sample: 72 µg/L	17/19	SYR4	2013–2019
Dibromochloromethane	12.16 µg/L No EPA limit set worst single sample: 24 µg/L	17/19	SYR4	2013–2019
Lead	14.18 µg/L 95% of the EPA limit 15 µg/L worst single sample: 22.9 µg/L	17/65	SYR4	2013–2019
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L	14/14	LCR	2023
Bromodichloromethane	9.94 µg/L No EPA limit set worst single sample: 13 µg/L	13/19	SYR4	2013–2019
Dibromoacetic Acid	3.495 µg/L No EPA limit set worst single sample: 3.6 µg/L	8/8	SYR4	2013–2019
TTHM	24.765 µg/L 31% of the EPA limit 80 µg/L worst single sample: 27.6 µg/L	8/8	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	3.565 µg/L 5.9% of the EPA limit 60 µg/L worst single sample: 3.6 µg/L	8/8	SYR4	2013–2019
Lithium	150 µg/L No EPA limit set	8/8	UCMR-5	2024
Nitrate-Nitrite	20 µg/L 0.2% of the EPA limit 10000 µg/L	6/7	SYR4	2012–2015
Barium	131 µg/L 6.6% of the EPA limit 2000 µg/L worst single sample: 132 µg/L	5/5	SYR4	2013–2017
Chloroform	23.6 µg/L No EPA limit set worst single sample: 29 µg/L	5/19	SYR4	2013–2019
Fluoride	2122 µg/L 53% of the EPA limit 4000 µg/L worst single sample: 2250 µg/L	5/5	SYR4	2013–2017
Gross Beta Particle Activity	11.155 pCi/L No EPA limit set worst single sample: 11.2 pCi/L	4/5	SYR4	2012–2018
Combined Radium (-226 And -228)	3.57 pCi/L 71% of the EPA limit 5 pCi/L worst single sample: 3.6 pCi/L	3/4	SYR4	2012–2018
Gross Alpha, Excl. Radon And U	6.72 pCi/L 45% of the EPA limit 15 pCi/L worst single sample: 6.8 pCi/L	3/3	SYR4	2015–2018
Di(2-ethylhexyl) Phthalate	6.985 µg/L 116% of the EPA limit, at the 95th percentile of samples — 6 µg/L worst single sample: 7.1 µg/L	2/14	SYR4	2013–2019
Combined Uranium	20 µg/L 67% of the EPA limit 30 µg/L	1/3	SYR4	2015–2018
Dalapon	1.3 µg/L 0.7% of the EPA limit 200 µg/L	1/13	SYR4	2013–2019
Dichloroacetic Acid	2.2 µg/L No EPA limit set	1/8	SYR4	2013–2019
Selenium	5 µg/L 10% of the EPA limit 50 µg/L	1/5	SYR4	2013–2017

86 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 TetrachlorideChlordaneChromiumDichloromethaneDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MASSON, KERRY
Phone: 936-582-1010
Email: [email protected]

Frequently asked questions about Stanley Lake Mud

Is Stanley Lake Mud tap water safe to drink?

EPA monitoring detected 23 contaminants in Stanley Lake 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 Stanley Lake Mud's water?

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

How many people does Stanley Lake Mud serve?

Stanley Lake Mud reports serving 3,783 people in Texas, per its EPA record.

Has Stanley Lake Mud had any water quality violations?

The EPA has 19 violations on file for Stanley Lake Mud, of which 0 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.