Harris County MUD #81 (TX) Water Quality

Harris County MUD #81 is a large public water system in EPA region 6 that provides tap water for the 77450 zip codes. It has 9 facilities where the water supply was tested for 75 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 0.331 µg/L. The maximum reported level of Manganese was 31.2 µg/L. There were 2 contamintants found in the Harris County MUD #81 water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (7)

1,2,3-trichloropropane (7)

1,3-butadiene (7)

1,4-dioxane (7)

1-butanol (8)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (8)

1H,1H,2H,2H-perfluorodecane sulfonic acid (8)

1H,1H,2H,2H-perfluorohexane sulfonic acid (8)

1H,1H,2H,2H-perfluorooctane sulfonic acid (8)

2,4-dinitrotoluene (6)

2,6-dinitrotoluene (6)

2-methoxyethanol (8)

2-propen-1-ol (Allyl Alcohol) (8)

4,4'-dichloro dichlorophenyl ethylene (DDE) (6)

4,8-dioxa-3H-perfluorononanoic acid (8)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (8)

alpha-hexachlorocyclohexane (7)

bromochloromethane (Halon 1011) (7)

bromomethane (7)

Butylated Hydroxyanisole (8)

chlorate (15)

chlorodifluoromethane (HCFC-22) (7)

chloromethane (7)

chlorpyrifos (7)

chromium (15)

chromium-6 (15)

cobalt (15)

dimethipin (7)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (6)

ethoprop (7)

Germanium (8)

HAA5 (five regulated haloacetic acids) (8)

HAA6Br (six brominated haloacetic acids) (8)

HAA9 (nine haloacetic acids) (8)

hexafluoropropylene oxide dimer acid (GenX) (8)

lithium (8)

Manganese (8)

methyl-tertiary-butyl-ether (MTBE) (6)

molinate (6)

molybdenum (15)

N-ethyl perfluorooctanesulfonamidoacetic acid (8)

N-methyl perfluorooctanesulfonamidoacetic acid (8)

nitrobenzene (6)

nonafluoro-3,6-dioxaheptanoic acid (8)

o-toluidine (8)

oxyfluorfen (7)

perchlorate (6)

perfluoro(2-ethoxyethane)sulfonic acid (8)

perfluoro-3-methoxypropanoic acid (8)

perfluoro-4-methoxybutanoic acid (8)

perfluorobutanesulfonic acid (15)

perfluorobutanoic acid (8)

perfluorodecanoic acid (8)

perfluorododecanoic acid (8)

perfluoroheptanesulfonic acid (8)

perfluoroheptanoic acid (15)

perfluorohexanesulfonic acid (15)

perfluorohexanoic acid (8)

perfluorononanoic acid (15)

perfluorooctanesulfonic acid (15)

perfluorooctanoic acid (15)

perfluoropentanesulfonic acid (8)

perfluoropentanoic acid (8)

perfluorotetradecanoic acid (8)

perfluorotridecanoic acid (8)

perfluoroundecanoic acid (8)

profenofos (7)

quinoline (8)

s-ethyl-dipropylthiocarbamate (EPTC) (6)

strontium (15)

tebuconazole (7)

terbacil (6)

Total Permethrin (7)

tribufos (7)

vanadium (15)

Sampling Facilities

Plant 1
Ground Water (GW)

WP1 - GST- 1110 Park MeadowEntry Point to the Distribution System (EP)

Plant 3
Ground Water (GW)

WP3 - EST 1412 West Green Blvd.Entry Point to the Distribution System (EP)

Plant 2
Ground Water (GW)

WP2 - GST- 22625 Indian KnollEntry Point to the Distribution System (EP)

Plant 4
Ground Water (GW)

WP4 - GST - 21725 Cimarron ParkwayEntry Point to the Distribution System (EP)

Distribution
Ground Water (GW)

21230 Park RunDistribution System (DS)
22603 Indian KnollDistribution System (DS)
819 Park WindDistribution System (DS)
942 Mesa TerraceDistribution System (DS)

Distribution System
Ground Water (GW)

21230 Park Run - Distribution Plant 1Maximum Residence Time (MR)
819 Park Wind -Distribution Plant 2Maximum Residence Time (MR)
22603 Indian Knoll - Distribution Plant 3Maximum Residence Time (MR)
942 Mesa Terrace - Distribution Plant 4Maximum Residence Time (MR)

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1010581001Entry Point to the Distribution System (EP)

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1010581002Entry Point to the Distribution System (EP)

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1010581003Entry Point to the Distribution System (EP)

FAQ

Is Harris County MUD #81 tap water safe to drink?

When was Harris County MUD #81 last tested for water contamination?

The latest water samples were taken on March 7th, 2025.