Tap WaterIndex

← Texas

Tap water quality report

Harris County Mud 370

EPA monitoring tested this supplier for 109 contaminants and detected 28. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
28
detected
4,452
people served
0
health-based violations
Texas rankingsLead in TexasPFAS in Texas
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.

0
health-based violations
14
violations on file
0
still open
ViolationTypeStatusPeriod
MON Monitoring Resolved 2022-08-01 → 2022-08-31
MON Monitoring Resolved 2022-08-01 → 2022-08-31
MON Monitoring Resolved 2022-08-01 → 2022-08-31
MON Monitoring Resolved 2022-08-01 → 2022-08-31
MON Monitoring Resolved 2022-07-01 → 2022-07-31
MON Monitoring Resolved 2022-07-01 → 2022-07-31
MON Monitoring Resolved 2022-07-01 → 2022-07-31
MON Monitoring Resolved 2022-07-01 → 2022-07-31
MR Monitoring Resolved 2015-10-01
MR Monitoring Resolved 2015-10-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0034 µg/L 1/4 2023
Pfhxa 0.0049 µg/L 1/4 2023
Pfpea 0.0053 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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Bromodichloromethane
10.8 µg/L
No EPA limit set
 67/67 SYR4 2012–2019
Chloroform
31.1 µg/L
No EPA limit set
 67/67 SYR4 2012–2019
TTHM
66.8 µg/L 84%
of the EPA limit 80 µg/L
 62/62 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
38.8 µg/L 65%
of the EPA limit 60 µg/L
 61/62 SYR4 2012–2019
Dibromochloromethane
20 µg/L
No EPA limit set
 60/67 SYR4 2012–2019
Dichloroacetic Acid
27.9 µg/L
No EPA limit set
 60/62 SYR4 2012–2019
Trichloroacetic Acid
10.9 µg/L
No EPA limit set
 60/62 SYR4 2012–2019
Copper
1300 µg/L 100%
of the EPA limit 1300 µg/L
 59/62 SYR4 2012–2019
Dibromoacetic Acid
4.8 µg/L
No EPA limit set
 43/62 SYR4 2012–2019
Lead
12.5 µg/L 83%
of the EPA limit 15 µg/L
 20/62 SYR4 2012–2019
Nitrate
780 µg/L 7.8%
of the EPA limit 10000 µg/L
 16/16 SYR4 2012–2019
Cyanide
180 µg/L 90%
of the EPA limit 200 µg/L
 15/24 SYR4 2014–2019
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2024
Bromoform
33.9 µg/L
No EPA limit set
 7/67 SYR4 2012–2019
Atrazine
0.2200 µg/L 7.3%
of the EPA limit 3 µg/L
 5/8 SYR4 2012–2019
Simazine
0.1300 µg/L 3.3%
of the EPA limit 4 µg/L
 5/8 SYR4 2012–2019
Barium
110 µg/L 5.5%
of the EPA limit 2000 µg/L
 3/3 SYR4 2012–2019
Fluoride
420 µg/L 11%
of the EPA limit 4000 µg/L
 3/3 SYR4 2012–2018
Nitrate-Nitrite
800 µg/L 8%
of the EPA limit 10000 µg/L
 3/3 SYR4 2013–2019
Lithium
30.5 µg/L
No EPA limit set
 3/4 UCMR-5 2023
Combined Radium (-226 And -228)
1.5 pCi/L 30%
of the EPA limit 5 pCi/L
 1/1 SYR4 2016
Di(2-ethylhexyl) Phthalate
0.8700 µg/L 14%
of the EPA limit 6 µg/L
 1/8 SYR4 2012–2019
Gross Beta Particle Activity
4.2 pCi/L
No EPA limit set
 1/1 SYR4 2016
Monochloroacetic Acid
2.1 µg/L
No EPA limit set
 1/62 SYR4 2012–2019
Nitrite
20 µg/L 2%
of the EPA limit 1000 µg/L
 1/3 SYR4 2013–2019
81 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) AdipateDinosebEthylene DibromideEndrinEthylbenzeneGross Alpha, Excl. Radon And UHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
REYENGA, STEVEN, G
Phone
713-623-4531
Email
byeates@sphllp.com

Frequently asked questions about Harris County Mud 370

Is Harris County Mud 370 tap water safe to drink?

EPA monitoring detected 28 contaminants in Harris County Mud 370'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 370's water?

EPA monitoring detected Bromodichloromethane, Chloroform, TTHM, Total Haloacetic Acids (HAA5), Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Harris County Mud 370 serve?

Harris County Mud 370 reports serving 4,452 people in Texas, per its EPA record.

Has Harris County Mud 370 had any water quality violations?

The EPA has 14 violations on file for Harris County Mud 370, 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.