Is City of Mont Belvieu Tap Water Safe? Quality Report

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

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
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2026-01-01 → 2026-03-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2025-10-01 → 2025-12-31
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31
MCL	Health-based	Resolved	2024-10-01 → 2024-12-31

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	228.7 µg/L 18% of the EPA limit 1300 µg/L worst single sample: 312 µg/L	59/65	SYR4	2013–2019
Chloroform	16 µg/L No EPA limit set worst single sample: 17 µg/L	35/36	SYR4	2012–2019
Lead	12.42 µg/L 83% of the EPA limit 15 µg/L worst single sample: 17 µg/L	34/65	SYR4	2013–2019
Bromodichloromethane	27.4 µg/L No EPA limit set worst single sample: 28 µg/L	33/36	SYR4	2012–2019
Dibromochloromethane	34.2 µg/L No EPA limit set worst single sample: 36 µg/L	33/36	SYR4	2012–2019
Bromoform	15.98 µg/L No EPA limit set worst single sample: 20 µg/L	29/36	SYR4	2012–2019
Dibromoacetic Acid	7.94 µg/L No EPA limit set worst single sample: 9.3 µg/L	17/17	SYR4	2012–2019
Dichloroacetic Acid	4.58 µg/L No EPA limit set worst single sample: 4.9 µg/L	17/17	SYR4	2012–2019
TTHM	71.8 µg/L 90% of the EPA limit 80 µg/L	17/17	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	15.62 µg/L 26% of the EPA limit 60 µg/L worst single sample: 18.1 µg/L	17/17	SYR4	2012–2019
Trichloroacetic Acid	4.8 µg/L No EPA limit set worst single sample: 5.6 µg/L	17/17	SYR4	2012–2019
Lead	0.0025 mg/L 17% of the EPA limit 0.0150 mg/L	11/11	LCR	2026
Fluoride	2555.5 µg/L 64% of the EPA limit 4000 µg/L worst single sample: 2560 µg/L	10/10	SYR4	2012–2019
Barium	118.2 µg/L 5.9% of the EPA limit 2000 µg/L worst single sample: 119 µg/L	9/9	SYR4	2013–2019
Arsenic	5.57 µg/L 56% of the EPA limit 10 µg/L worst single sample: 5.6 µg/L	3/9	SYR4	2013–2019
Lithium	26.7 µg/L No EPA limit set	3/3	UCMR-5	2025
Combined Radium (-226 And -228)	1.5 pCi/L 30% of the EPA limit 5 pCi/L	2/2	SYR4	2015
Nitrate	10 µg/L 0.1% of the EPA limit 10000 µg/L	2/46	SYR4	2012–2019
Nitrate-Nitrite	10 µg/L 0.1% of the EPA limit 10000 µg/L	1/8	SYR4	2012–2015
Xylenes, Total	1.1 µg/L 0% of the EPA limit 10000 µg/L	1/19	SYR4	2013–2019

89 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, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: MCWILLIAMS, JOEY
Phone: 281-576-2213
Email: MEDINAMEL96@YAHOO.COM

Frequently asked questions about City of Mont Belvieu

Is City of Mont Belvieu tap water safe to drink?

EPA monitoring detected 20 contaminants in City of Mont Belvieu'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 City of Mont Belvieu's water?

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

How many people does City of Mont Belvieu serve?

City of Mont Belvieu reports serving 12,864 people in Texas, per its EPA record.

Has City of Mont Belvieu had any water quality violations?

The EPA has 52 violations on file for City of Mont Belvieu, of which 22 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.