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Tap water quality report

Harris County Mud 23

EPA monitoring tested this supplier for 109 contaminants and detected 32. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
32
detected
3,170
people served
14
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.

14
health-based violations
39
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2013-04-01 → 2013-06-30
MCL Health-based Resolved 2013-04-01 → 2013-06-30
MCL Health-based Resolved 2013-04-01 → 2013-06-30
MCL Health-based Resolved 2013-04-01 → 2013-06-30
MCL Health-based Resolved 2013-01-01 → 2013-03-31
MCL Health-based Resolved 2013-01-01 → 2013-03-31
MCL Health-based Resolved 2013-01-01 → 2013-03-31
MCL Health-based Resolved 2013-01-01 → 2013-03-31
MCL Health-based Resolved 2013-01-01 → 2013-03-31
MCL Health-based Resolved 2012-10-01 → 2012-12-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
Pfba 0.0073 µg/L 2/8 2025
Pfhxa 0.0045 µg/L 2/8 2025
Pfpea 0.0052 µg/L 2/8 2025

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
244 µg/L 19%
of the EPA limit 1300 µg/L
 47/64 SYR4 2013–2019
Bromodichloromethane
21.1 µg/L
No EPA limit set
 36/75 SYR4 2012–2019
TTHM
71.7 µg/L 90%
of the EPA limit 80 µg/L
 35/62 SYR4 2012–2019
Chloroform
16.3 µg/L
No EPA limit set
 33/75 SYR4 2012–2019
Dibromochloromethane
24.5 µg/L
No EPA limit set
 33/75 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
37.8 µg/L 63%
of the EPA limit 60 µg/L
 33/62 SYR4 2012–2019
Bromoform
13 µg/L
No EPA limit set
 30/75 SYR4 2012–2019
Dichloroacetic Acid
20.3 µg/L
No EPA limit set
 30/62 SYR4 2012–2019
Dibromoacetic Acid
9.4 µg/L
No EPA limit set
 29/62 SYR4 2012–2019
Nitrate
580 µg/L 5.8%
of the EPA limit 10000 µg/L
 28/38 SYR4 2012–2019
Trichloroacetic Acid
5 µg/L
No EPA limit set
 21/62 SYR4 2012–2019
Combined Radium (-226 And -228)
5.9 pCi/L 118%
of the EPA limit, in the worst sample — 5 pCi/L
 19/19 SYR4 2012–2019
Gross Beta Particle Activity
10.7 pCi/L
No EPA limit set
 19/19 SYR4 2012–2019
Combined Uranium
9.3 µg/L 31%
of the EPA limit 30 µg/L
 16/16 SYR4 2012–2019
Gross Alpha, Excl. Radon And U
22 pCi/L 147%
of the EPA limit, in the worst sample — 15 pCi/L
 16/16 SYR4 2012–2019
Lead
29 µg/L 193%
of the EPA limit, in the worst sample — 15 µg/L
 15/64 SYR4 2013–2019
Lead
0.0018 mg/L 12%
of the EPA limit 0.0150 mg/L
 13/13 LCR 2025
Nitrite
890 µg/L 89%
of the EPA limit 1000 µg/L
 12/36 SYR4 2012–2019
Nitrate-Nitrite
1200 µg/L 12%
of the EPA limit 10000 µg/L
 8/9 SYR4 2012–2019
Monochloroacetic Acid
8.6 µg/L
No EPA limit set
 7/62 SYR4 2012–2019
Atrazine
0.1900 µg/L 6.3%
of the EPA limit 3 µg/L
 5/18 SYR4 2012–2019
Lithium
24 µg/L
No EPA limit set
 5/8 UCMR-5 2024
Barium
223 µg/L 11%
of the EPA limit 2000 µg/L
 4/4 SYR4 2014–2017
Fluoride
1120 µg/L 28%
of the EPA limit 4000 µg/L
 4/4 SYR4 2014–2017
Arsenic
4.5 µg/L 45%
of the EPA limit 10 µg/L
 3/4 SYR4 2014–2017
Cyanide
130 µg/L 65%
of the EPA limit 200 µg/L
 2/4 SYR4 2014–2017
Selenium
6.1 µg/L 12%
of the EPA limit 50 µg/L
 2/4 SYR4 2014–2017
Simazine
0.2500 µg/L 6.3%
of the EPA limit 4 µg/L
 2/18 SYR4 2012–2019
Di(2-ethylhexyl) Phthalate
1.4 µg/L 23%
of the EPA limit 6 µg/L
 1/18 SYR4 2012–2019
77 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, TotalAsbestosBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaOxamylPFBSPfdaPfdoaPfeesaPfhpaPfhpsPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpesPftaPftrdaPfunaPentachlorophenolPicloramStyreneTetrachloroethyleneThallium, TotalTolueneToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
FOSSATI, TARYNN
Phone
281-350-0895
Email
tarynnf@tng-utility.com

Frequently asked questions about Harris County Mud 23

Is Harris County Mud 23 tap water safe to drink?

EPA monitoring detected 32 contaminants in Harris County Mud 23'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 23's water?

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

How many people does Harris County Mud 23 serve?

Harris County Mud 23 reports serving 3,170 people in Texas, per its EPA record.

Has Harris County Mud 23 had any water quality violations?

The EPA has 39 violations on file for Harris County Mud 23, of which 14 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.