City of Houston (TX) Water Quality

City of Houston is a large public water system in EPA region 6 that provides tap water for the 77002 - 77038, 77041 - 77051, 77054 - 77057, 77060, 77061, 77064, 77071 - 77094, 77098, 77099, 77346, 77401, 77489, 77503, 77504, 77536, 77547, 77598 zip codes. It has 112 facilities where the water supply was tested for 97 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 75.741 µg/L. Some (2 of 63 or 3%) of the latest water samples showed levels of HAA5 (five regulated haloacetic acids) that were at or above unsafe concentration levels. The maximum reported level of Manganese was 48.7 µg/L. There were 2 contamintants found in the City of Houston water supply at levels that were above the minimum reporting level. 1 of the contaminants were above the reference level, which means they may pose a risk to human health.

Contaminants

1,1-dichloroethane (103)

1,2,3-trichloropropane (103)

1,2-diphenylhydrazine (89)

1,3-butadiene (103)

1,4-dioxane (103)

1-butanol (100)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (96)

17-alpha-ethynylestradiol (103)

17-beta-estradiol (103)

1H,1H,2H,2H-perfluorodecane sulfonic acid (96)

1H,1H,2H,2H-perfluorohexane sulfonic acid (96)

1H,1H,2H,2H-perfluorooctane sulfonic acid (96)

2,4,6-trichlorophenol (80)

2,4-dichlorophenol (80)

2,4-dinitrophenol (80)

2,4-dinitrotoluene (129)

2,6-dinitrotoluene (129)

2-methoxyethanol (100)

2-methyl-phenol (80)

2-propen-1-ol (Allyl Alcohol) (100)

4,4'-dichloro dichlorophenyl ethylene (DDE) (129)

4,8-dioxa-3H-perfluorononanoic acid (96)

4-androstene-3,17-dione (103)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (96)

alpha-hexachlorocyclohexane (100)

anatoxin-a (79)

bromochloromethane (Halon 1011) (103)

bromomethane (103)

Butylated Hydroxyanisole (101)

chlorate (199)

chlorodifluoromethane (HCFC-22) (103)

chloromethane (103)

chlorpyrifos (100)

chromium (199)

chromium-6 (199)

cobalt (199)

cylindrospermopsin (79)

diazinon (89)

dimethipin (100)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (129)

diuron (91)

equilin (103)

estriol (103)

estrone (103)

ethoprop (100)

fonofos (89)

Germanium (101)

HAA5 (five regulated haloacetic acids) (63)

HAA6Br (six brominated haloacetic acids) (63)

HAA9 (nine haloacetic acids) (63)

hexafluoropropylene oxide dimer acid (GenX) (96)

linuron (91)

lithium (96)

Manganese (101)

methyl-tertiary-butyl-ether (MTBE) (126)

molinate (129)

molybdenum (199)

N-ethyl perfluorooctanesulfonamidoacetic acid (96)

N-methyl perfluorooctanesulfonamidoacetic acid (96)

nitrobenzene (89)

nitrobenzene (126)

nonafluoro-3,6-dioxaheptanoic acid (96)

o-toluidine (101)

oxyfluorfen (100)

perchlorate (129)

perfluoro(2-ethoxyethane)sulfonic acid (96)

perfluoro-3-methoxypropanoic acid (96)

perfluoro-4-methoxybutanoic acid (96)

perfluorobutanesulfonic acid (198)

perfluorobutanoic acid (96)

perfluorodecanoic acid (96)

perfluorododecanoic acid (96)

perfluoroheptanesulfonic acid (96)

perfluoroheptanoic acid (198)

perfluorohexanesulfonic acid (198)

perfluorohexanoic acid (96)

perfluorononanoic acid (198)

perfluorooctanesulfonic acid (198)

perfluorooctanoic acid (198)

perfluoropentanesulfonic acid (96)

perfluoropentanoic acid (96)

perfluorotetradecanoic acid (96)

perfluorotridecanoic acid (96)

perfluoroundecanoic acid (96)

profenofos (100)

prometon (89)

quinoline (101)

s-ethyl-dipropylthiocarbamate (EPTC) (129)

strontium (199)

tebuconazole (100)

terbacil (129)

terbufos (88)

testosterone (103)

total microcystins (60)

Total Permethrin (100)

tribufos (100)

vanadium (199)

Sampling Facilities

EWPP 1
Surface Water (SW)

EWPP 1 (12555 Clinton Dr - Lab Tap)Entry Point to the Distribution System (EP)

Acres Homes
Multiple Sources (MX)

Acres Homes (1810 Dolly Wright)Entry Point to the Distribution System (EP)

District 21
Ground Water (GW)

District 21 (15915 Grigsby)Entry Point to the Distribution System (EP)

NEWPP EP141
Surface Water (SW)

NEWPP (12121 N Sam Hou Pkwy E)Entry Point to the Distribution System (EP)
Distribution Header 12121 N Sam Hou Pkwy EEntry Point to the Distribution System (EP)

Parkglen 1
Ground Water (GW)

Parkglen 1 (10923 Stancliff)Entry Point to the Distribution System (EP)

Memorial West 2
Ground Water (GW)

Memorial West 2 (16005 Katy Fwy.)Entry Point to the Distribution System (EP)

Katy Addicks
Ground Water (GW)

Katy Addicks (11500 Old Katy Rd.)Entry Point to the Distribution System (EP)

White Oak
Ground Water (GW)

White Oak (9702 Deanwood)Entry Point to the Distribution System (EP)

W. Houston 3
Ground Water (GW)

W. Houston 3 (14925 S. Richmond)Entry Point to the Distribution System (EP)

Spring Branch
Multiple Sources (MX)

Spring Branch (9400 Kempwood)Entry Point to the Distribution System (EP)

Southwest
Multiple Sources (MX)

Southwest (4410 Westpark)Entry Point to the Distribution System (EP)

Sims Bayou
Multiple Sources (MX)

Sims Bayou (13840 Croquet)Entry Point to the Distribution System (EP)

Sharpstown 1
Ground Water (GW)

Sharpstown 1 (6910 Bintliff)Entry Point to the Distribution System (EP)

Rosewood 1
Ground Water (GW)

Rosewood 1 (12844 Westheimer)Entry Point to the Distribution System (EP)

Ridgemont
Ground Water (GW)

Ridgemont (15908 Ridgeroe)Entry Point to the Distribution System (EP)

District 90 2
Ground Water (GW)

District 90-2 (11607 Herald Square)Entry Point to the Distribution System (EP)
GST @ 11607 Herald SquareEntry Point to the Distribution System (EP)

District 218
Ground Water (GW)

District 218 (12705 Brant Rock)Entry Point to the Distribution System (EP)

District 123
Ground Water (GW)

District 123 (10003 S. Kirkwood)Entry Point to the Distribution System (EP)

District 111-2
Ground Water (GW)

District 111-2 (10301 Sun City Court)Entry Point to the Distribution System (EP)

District 71
Ground Water (GW)

District 71 (1610 Hayes Rd.)Entry Point to the Distribution System (EP)

Bellaire Braes
Multiple Sources (MX)

Bellaire Braes (12423 Bellaire Blvd.)Entry Point to the Distribution System (EP)

Braeswood
Ground Water (GW)

Braeswood (9100 Bob White)Entry Point to the Distribution System (EP)

SEWPP
Surface Water (SW)

SEWPP (2600 Genoa Red Bluff)Entry Point to the Distribution System (EP)

EWPP 3
Surface Water (SW)

EWPP 3 (2300 Federal - Lab Tap)Entry Point to the Distribution System (EP)

Parkglen West
Ground Water (GW)

Parkglen West (10630 S Kirkwood)Entry Point to the Distribution System (EP)
GST & 10630 S KirkwoodEntry Point to the Distribution System (EP)

Braes Utilities
Ground Water (GW)

Braes Utilities (3710 Eldridge)Entry Point to the Distribution System (EP)

Interwood
Ground Water (GW)

Interwood (116 Alliant)Entry Point to the Distribution System (EP)

District 203
Ground Water (GW)

District 203 (1255 Gears Rd)Entry Point to the Distribution System (EP)
GST @ 1255 Gears RdEntry Point to the Distribution System (EP)

Intercontinental 1
Ground Water (GW)

Intercontinental 1 (3102 McKaughan)Entry Point to the Distribution System (EP)

Enclave 2
Ground Water (GW)

Enclave 2 (13135 Forkland)Entry Point to the Distribution System (EP)

District 175
Ground Water (GW)

District 175 (1206 Arrowhill)Entry Point to the Distribution System (EP)

Brookfield
Ground Water (GW)

Brookfield (9007 Dairy View Ln.)Entry Point to the Distribution System (EP)

District 51-2
Ground Water (GW)

District 51-2 (4000 Wilcrest)Entry Point to the Distribution System (EP)

District 266
Ground Water (GW)

District 266 (4950 Aeropark Dr.)Entry Point to the Distribution System (EP)

District 49
Ground Water (GW)

District 49 (10902 Moonlight)Entry Point to the Distribution System (EP)

Park 10 Central
Ground Water (GW)

Park 10 Central (1300 Langham Creek)Entry Point to the Distribution System (EP)

Park 10 West
Ground Water (GW)

Park 10 West (18324 Addicks Levee Dr.)Entry Point to the Distribution System (EP)

Park 10 East
Ground Water (GW)

Park 10 East (14315 Park Row Blvd.)Entry Point to the Distribution System (EP)

District 223
Ground Water (GW)

District 223 (13300 Sandbridge)Entry Point to the Distribution System (EP)

Distribution System
Multiple Sources (MX)

DBP02-1 (5555 Lynbrook)Distribution System (DS)
DBP02-10 (3415 Luton Park)Distribution System (DS)
DBP02-11 (414 Tresvant)Distribution System (DS)
DBP02-12 (4212 Richmond)Distribution System (DS)
DBP02-13 (430 Capehill)Distribution System (DS)
DBP02-14 (6118 Heatherbrook)Distribution System (DS)
DBP02-15 (1919 Swift)Distribution System (DS)
DBP02-16 (11630 Hempstead Rd)Distribution System (DS)
DBP02-2 (12211 Brantely)Distribution System (DS)
DBP02-3 (1350 Bay Area)Distribution System (DS)
DBP02-4 (1363 Federal)Distribution System (DS)
DBP02-5 (3902 Corder)Distribution System (DS)
DBP02-6 (1620 Dolly Wright)Distribution System (DS)
DBP02-7 (19211 Gulf Fwy.)Distribution System (DS)
DBP02-8 (8611 Cottage Gate)Distribution System (DS)
DBP02-9 (6010 Moonmist)Distribution System (DS)
D-52 - 9519 WestheimerMaximum Residence Time (MR)
BRAES#2 - 13227 Gerrards CrossingMaximum Residence Time (MR)
106 - 6302 RowanMaximum Residence Time (MR)
355 - 1700 CrosspointMaximum Residence Time (MR)
302 - 9130 MesaMaximum Residence Time (MR)
HCWCID 76 #1 - 6711 LakemontMaximum Residence Time (MR)
Northboro 3 - 13800 Ella BlvdMaximum Residence Time (MR)
Bayfield MUD #4 - 430 CapehillMaximum Residence Time (MR)
342 - 7218 WillowtexMaximum Residence Time (MR)
181 - 4406 GardendaleMaximum Residence Time (MR)
43 - 7223 Log HollowMaximum Residence Time (MR)
257 - 7826 TrentwayMaximum Residence Time (MR)
77 - 14311 KellywoodMaximum Residence Time (MR)
Parkglen MUD - 9640 WilcrestMaximum Residence Time (MR)
100 - 12322 ChessingtonMaximum Residence Time (MR)
83 - 811 ThornbranchMaximum Residence Time (MR)
HCMUD 218-1 - 3825 SYNOTTMaximum Residence Time (MR)
HIA-13 - 6330 Star LakeMaximum Residence Time (MR)
256 - 9801 Pine LakeMaximum Residence Time (MR)
D 111-2 - 12811 CoveyMaximum Residence Time (MR)
HCMUD 11 - 7351 SynottMaximum Residence Time (MR)
BBM-2 - 1350 W Bay Area BlvdMaximum Residence Time (MR)
Park10 #2 - 17507 Sun DropMaximum Residence Time (MR)
COURT RD MUD - 16330 Hunting DogMaximum Residence Time (MR)
29 - 8815 MISSISSIPIMaximum Residence Time (MR)
32 - 2312 TIDWELLMaximum Residence Time (MR)
1 - 12003 PALMSPRINGMaximum Residence Time (MR)
16 - 3902 CORDERMaximum Residence Time (MR)
17 - 11706 HORNBROOKMaximum Residence Time (MR)
2 - 618 LEICESTERMaximum Residence Time (MR)
24 - 5174 VERDOMEMaximum Residence Time (MR)
27 - 5415 NORTH CROOKED CREEKMaximum Residence Time (MR)
18 - 13807 KINGSRIDEMaximum Residence Time (MR)
3 - 1396 FEDERALMaximum Residence Time (MR)
4 - 12998 MARKETMaximum Residence Time (MR)
1350 BAY AREAMaximum Residence Time (MR)
1363 FEDERALMaximum Residence Time (MR)
13807 PEACH HOLLOWMaximum Residence Time (MR)
21 - 7131 PERIMETE PARKMaximum Residence Time (MR)

Jersey Village
Multiple Sources (MX)

Jersey Village (7207 Fairview)Entry Point to the Distribution System (EP)

Sharpstown 2
Ground Water (GW)

Sharpstown 2 (8619 Bellaire Blvd.)Entry Point to the Distribution System (EP)

District 184
Ground Water (GW)

District 184 (10518 Beechnut)Entry Point to the Distribution System (EP)

District 54
Ground Water (GW)

District 54 (8008 Richmond)Entry Point to the Distribution System (EP)

Meyerland 1
Ground Water (GW)

GST @ 9020 S. RiceEntry Point to the Distribution System (EP)

EP016
Ground Water (GW)

GST @ CHASEWOOD - 7650 CHASEWOODEntry Point to the Distribution System (EP)

12500 CLINTON E1 & E2
Surface Water (SW)

12500_CLINTON_E1_&_EEntry Point to the Distribution System (EP)

3100 GENOA RD SE
Surface Water (SW)

3100_GENOA_RD_SEEntry Point to the Distribution System (EP)

ACRES HOME
Ground Water (GW)

ACRES_HOMEEntry Point to the Distribution System (EP)

AFTON VILLAGE
Ground Water (GW)

AFTON_VILLAGEEntry Point to the Distribution System (EP)

BELLAIRE BRAES
Ground Water (GW)

BELLAIRE_BRAESEntry Point to the Distribution System (EP)

BRAESWOOD
Ground Water (GW)

BRAESWOODEntry Point to the Distribution System (EP)

BRIARGROVE PARK
Ground Water (GW)

BRIARGROVE_PARKEntry Point to the Distribution System (EP)

CENTRAL
Ground Water (GW)

CENTRALEntry Point to the Distribution System (EP)

CHASEWOOD
Ground Water (GW)

CHASEWOODEntry Point to the Distribution System (EP)

DISTRCIT 15
Ground Water (GW)

DISTRCIT_15Entry Point to the Distribution System (EP)

DISTRICT 21
Ground Water (GW)

DISTRICT_21Entry Point to the Distribution System (EP)

FAIRDALE
Ground Water (GW)

FAIRDALEEntry Point to the Distribution System (EP)

DISTRICT 42 2
Ground Water (GW)

DISTRICT_42_2Entry Point to the Distribution System (EP)

DISTRICT 54
Ground Water (GW)

DISTRICT_54Entry Point to the Distribution System (EP)

DISTRICT 71
Ground Water (GW)

DISTRICT_71Entry Point to the Distribution System (EP)

DISTRICT 90 2
Ground Water (GW)

DISTRICT_90_2Entry Point to the Distribution System (EP)

DISTRICT 93
Ground Water (GW)

DISTRICT_93Entry Point to the Distribution System (EP)

DISTRICT 111 2
Ground Water (GW)

DISTRICT_111_2Entry Point to the Distribution System (EP)

DISTRICT 112
Ground Water (GW)

DISTRICT_112Entry Point to the Distribution System (EP)

DISTRICT 123
Ground Water (GW)

DISTRICT_123Entry Point to the Distribution System (EP)

DISTRICT 139
Ground Water (GW)

DISTRICT_139Entry Point to the Distribution System (EP)

DISTRICT 158
Ground Water (GW)

DISTRICT_158Entry Point to the Distribution System (EP)

DISTRICT 184
Ground Water (GW)

DISTRICT_184Entry Point to the Distribution System (EP)

DISTRICT 218
Ground Water (GW)

DISTRICT_218Entry Point to the Distribution System (EP)

GLENSHIRE 1
Ground Water (GW)

GLENSHIRE_1Entry Point to the Distribution System (EP)

GLENSHIRE 2
Ground Water (GW)

GLENSHIRE_2Entry Point to the Distribution System (EP)

HEIGHTS
Ground Water (GW)

HEIGHTSEntry Point to the Distribution System (EP)

EP 000000000000053
Ground Water (GW)

EP_000000000000053Entry Point to the Distribution System (EP)

JERSEY VILLAGE
Ground Water (GW)

JERSEY_VILLAGEEntry Point to the Distribution System (EP)

KATY ADDICKS
Ground Water (GW)

KATY_ADDICKSEntry Point to the Distribution System (EP)

MEMORIAL WEST MUD 2
Ground Water (GW)

MEMORIAL_WEST_MUD_2Entry Point to the Distribution System (EP)

MEYERLAND 1
Ground Water (GW)

MEYERLAND_1Entry Point to the Distribution System (EP)

NORTHEAST
Ground Water (GW)

NORTHEASTEntry Point to the Distribution System (EP)

PARKGLEN 1
Ground Water (GW)

PARKGLEN_1Entry Point to the Distribution System (EP)

PARKGLEN WEST 2
Ground Water (GW)

PARKGLEN_WEST_2Entry Point to the Distribution System (EP)

RIDGEMONT
Ground Water (GW)

RIDGEMONTEntry Point to the Distribution System (EP)

ROSEWOOD 1
Ground Water (GW)

ROSEWOOD_1Entry Point to the Distribution System (EP)

SHARPSTOWN 1
Ground Water (GW)

SHARPSTOWN_1Entry Point to the Distribution System (EP)

SHARPSTOWN 2
Ground Water (GW)

SHARPSTOWN_2Entry Point to the Distribution System (EP)

SIMS BAYOU
Ground Water (GW)

SIMS_BAYOUEntry Point to the Distribution System (EP)

SOUTH END
Ground Water (GW)

SOUTH_ENDEntry Point to the Distribution System (EP)

SOUTH PARK
Ground Water (GW)

SOUTH_PARKEntry Point to the Distribution System (EP)

SOUTHWEST
Ground Water (GW)

SOUTHWESTEntry Point to the Distribution System (EP)

SPRING BRANCH
Ground Water (GW)

SPRING_BRANCHEntry Point to the Distribution System (EP)

W HOUSTON 3
Ground Water (GW)

W_HOUSTON_3Entry Point to the Distribution System (EP)

WHITE OAK
Ground Water (GW)

WHITE_OAKEntry Point to the Distribution System (EP)

EASTEX OAKS
Ground Water (GW)

EASTEX_OAKSEntry Point to the Distribution System (EP)

2200 FEDERAL RD E3
Surface Water (SW)

2200_FEDERAL_RD_E3Entry Point to the Distribution System (EP)

BRAES UD
Ground Water (GW)

BRAES_UDEntry Point to the Distribution System (EP)

BROOKFIELD
Ground Water (GW)

BROOKFIELDEntry Point to the Distribution System (EP)

DISTRICT 49 2
Ground Water (GW)

DISTRICT_49_2Entry Point to the Distribution System (EP)

DISTRICT 51 2
Ground Water (GW)

DISTRICT_51_2Entry Point to the Distribution System (EP)

DISTRICT 107
Ground Water (GW)

DISTRICT_107Entry Point to the Distribution System (EP)

DISTRICT 175 1
Ground Water (GW)

DISTRICT_175_1Entry Point to the Distribution System (EP)

ENCLAVE 2
Ground Water (GW)

ENCLAVE_2Entry Point to the Distribution System (EP)

TIDWELL TIMBERS
Ground Water (GW)

TIDWELL_TIMBERSEntry Point to the Distribution System (EP)

WESTWAY UTILITY
Ground Water (GW)

WESTWAY_UTILITYEntry Point to the Distribution System (EP)

GREENS PUD 2
Ground Water (GW)

GREENS_PUD_2Entry Point to the Distribution System (EP)

NORTH GATE II
Ground Water (GW)

NORTH_GATE_IIEntry Point to the Distribution System (EP)

WEST ROAD
Ground Water (GW)

WEST_ROADEntry Point to the Distribution System (EP)

INTERCONTINENTAL 1
Ground Water (GW)

INTERCONTINENTAL_1Entry Point to the Distribution System (EP)

INTERCONTINENTAL 2
Ground Water (GW)

INTERCONTINENTAL_2Entry Point to the Distribution System (EP)

DISTRICT 203
Ground Water (GW)

DISTRICT_203Entry Point to the Distribution System (EP)

EASTEX OAKS 3
Ground Water (GW)

EASTEX_OAKS_3Entry Point to the Distribution System (EP)

INTERWOOD
Ground Water (GW)

INTERWOODEntry Point to the Distribution System (EP)

MUD 266
Ground Water (GW)

MUD_266Entry Point to the Distribution System (EP)

FAQ

Is City of Houston tap water safe to drink?

When was City of Houston last tested for water contamination?

The latest water samples were taken on February 21st, 2025.