Is Harris County Mud 183 Tap Water Safe? Quality Report

Water source: SWP
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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30
MR	Monitoring	Resolved	2013-07-01 → 2013-09-30

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).

Contaminant	Max	Detection rate	Period
Pfba	0.0066 µg/L	1/4	2023
Pfhxa	0.0049 µg/L	1/4	2023
PFHXS	0.0031 µg/L	1/4	2023
Pfpea	0.0065 µg/L	1/4	2023

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Bromodichloromethane	19.7 µg/L No EPA limit set	67/67	SYR4	2012–2019
Chloroform	47.7 µg/L No EPA limit set	67/67	SYR4	2012–2019
Dibromochloromethane	7.5 µg/L No EPA limit set	64/67	SYR4	2012–2019
Copper	539 µg/L 41% of the EPA limit 1300 µg/L	63/65	SYR4	2013–2019
Dichloroacetic Acid	28.7 µg/L No EPA limit set	62/62	SYR4	2012–2019
TTHM	74.5 µg/L 93% of the EPA limit 80 µg/L	62/62	SYR4	2012–2019
Total Haloacetic Acids (HAA5)	45.1 µg/L 75% of the EPA limit 60 µg/L	62/62	SYR4	2012–2019
Trichloroacetic Acid	14.9 µg/L No EPA limit set	62/62	SYR4	2012–2019
Dibromoacetic Acid	3.8 µg/L No EPA limit set	49/62	SYR4	2012–2019
Nitrate	760 µg/L 7.6% of the EPA limit 10000 µg/L	32/32	SYR4	2012–2019
Lead	19.2 µg/L 128% of the EPA limit, in the worst sample — 15 µg/L	20/65	SYR4	2013–2019
Bromoform	2.7 µg/L No EPA limit set	19/67	SYR4	2012–2019
Lead	0.0021 mg/L 14% of the EPA limit 0.0150 mg/L	16/16	LCR	2025
Monochloroacetic Acid	11.1 µg/L No EPA limit set	7/62	SYR4	2012–2019
Nitrate-Nitrite	760 µg/L 7.6% of the EPA limit 10000 µg/L	7/7	SYR4	2012–2015
Atrazine	0.2700 µg/L 9% of the EPA limit 3 µg/L	6/8	SYR4	2012–2019
Simazine	0.2000 µg/L 5% of the EPA limit 4 µg/L	5/8	SYR4	2012–2019
Nitrite	20 µg/L 2% of the EPA limit 1000 µg/L	3/7	SYR4	2012–2015
Barium	82.4 µg/L 4.1% of the EPA limit 2000 µg/L	2/2	SYR4	2014–2017
Cyanide	170 µg/L 85% of the EPA limit 200 µg/L	2/2	SYR4	2014–2017
Fluoride	420 µg/L 11% of the EPA limit 4000 µg/L	2/2	SYR4	2014–2017
Lithium	14.2 µg/L No EPA limit set	2/4	UCMR-5	2023
Combined Radium (-226 And -228)	1 pCi/L 20% of the EPA limit 5 pCi/L	1/1	SYR4	2014
Ethylbenzene	2 µg/L 0.3% of the EPA limit 700 µg/L	1/5	SYR4	2015–2019
Gross Beta Particle Activity	4 pCi/L No EPA limit set	1/1	SYR4	2014
Toluene	2.1 µg/L 0.2% of the EPA limit 1000 µg/L	1/5	SYR4	2015–2019
Xylenes, Total	12 µg/L 0.1% of the EPA limit 10000 µg/L	1/5	SYR4	2015–2019

78 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, TotalArsenicAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumCombined UraniumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebEthylene DibromideEndrinGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalToxapheneTrichloroethyleneVinyl Chloridecis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: ALVARADO, RUDY
Phone: 713-623-4531

Frequently asked questions about Harris County Mud 183

Is Harris County Mud 183 tap water safe to drink?

EPA monitoring detected 31 contaminants in Harris County Mud 183'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 Harris County Mud 183's water?

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

How many people does Harris County Mud 183 serve?

Harris County Mud 183 reports serving 3,981 people in Texas, per its EPA record.

Has Harris County Mud 183 had any water quality violations?

The EPA has 8 violations on file for Harris County Mud 183, 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.