City of Friendswood (TX) Water Quality

City of Friendswood is a large public water system in EPA region 6 that provides tap water for the 77546 zip codes. It has 11 facilities where the water supply was tested for 68 chemical contaminants that impact tap water quality and human health.

The maximum reported level of 1-butanol was 3.1 µg/L. The maximum reported level of HAA5 (five regulated haloacetic acids) was 95.67 µg/L. Some (2 of 16 or 13%) 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 204.6 µg/L. There were 3 contamintants found in the City of Friendswood 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 (16)

1,2,3-trichloropropane (16)

1,3-butadiene (16)

1,4-dioxane (16)

1-butanol (19)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (20)

1H,1H,2H,2H-perfluorodecane sulfonic acid (20)

1H,1H,2H,2H-perfluorohexane sulfonic acid (20)

1H,1H,2H,2H-perfluorooctane sulfonic acid (20)

2-methoxyethanol (19)

2-propen-1-ol (Allyl Alcohol) (19)

4,8-dioxa-3H-perfluorononanoic acid (20)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (20)

alpha-hexachlorocyclohexane (19)

anatoxin-a (16)

bromochloromethane (Halon 1011) (16)

bromomethane (16)

Butylated Hydroxyanisole (17)

chlorate (32)

chlorodifluoromethane (HCFC-22) (16)

chloromethane (16)

chlorpyrifos (19)

chromium (32)

chromium-6 (32)

cobalt (32)

cylindrospermopsin (16)

dimethipin (19)

ethoprop (19)

Germanium (19)

HAA5 (five regulated haloacetic acids) (16)

HAA6Br (six brominated haloacetic acids) (16)

HAA9 (nine haloacetic acids) (16)

hexafluoropropylene oxide dimer acid (GenX) (20)

lithium (20)

Manganese (19)

molybdenum (32)

N-ethyl perfluorooctanesulfonamidoacetic acid (20)

N-methyl perfluorooctanesulfonamidoacetic acid (20)

nonafluoro-3,6-dioxaheptanoic acid (20)

o-toluidine (17)

oxyfluorfen (19)

perfluoro(2-ethoxyethane)sulfonic acid (20)

perfluoro-3-methoxypropanoic acid (20)

perfluoro-4-methoxybutanoic acid (20)

perfluorobutanesulfonic acid (36)

perfluorobutanoic acid (20)

perfluorodecanoic acid (20)

perfluorododecanoic acid (20)

perfluoroheptanesulfonic acid (20)

perfluoroheptanoic acid (36)

perfluorohexanesulfonic acid (36)

perfluorohexanoic acid (20)

perfluorononanoic acid (36)

perfluorooctanesulfonic acid (36)

perfluorooctanoic acid (36)

perfluoropentanesulfonic acid (20)

perfluoropentanoic acid (20)

perfluorotetradecanoic acid (20)

perfluorotridecanoic acid (20)

perfluoroundecanoic acid (20)

profenofos (19)

quinoline (17)

strontium (32)

tebuconazole (19)

total microcystins (16)

Total Permethrin (19)

tribufos (19)

vanadium (32)

Sampling Facilities

Plant 5
Ground Water (GW)

809 MerriwoodEntry Point to the Distribution System (EP)

Plant 7
Ground Water (GW)

605 StoneledgeEntry Point to the Distribution System (EP)

Plant 3
Ground Water (GW)

500 West CastleharbourEntry Point to the Distribution System (EP)

Plant 2
Ground Water (GW)

1100 Colt RoadEntry Point to the Distribution System (EP)

Plant 6
Ground Water (GW)

5006 Penny StoneEntry Point to the Distribution System (EP)

Plant 4
Ground Water (GW)

3635 Friendswood Link RoadEntry Point to the Distribution System (EP)

Surface Water Station 2
Surface Water (SW)

SWS2 Entry Point to Distribution SystemEntry Point to the Distribution System (EP)

Houston Water Intertie
Surface Water (SW)

SWS1 Entry Point to Dist. SystemEntry Point to the Distribution System (EP)

DBP200
Multiple Sources (MX)

109 Estates DriveDistribution System (DS)
16610 BougainvillaDistribution System (DS)
607 Mary AnnDistribution System (DS)
1306 DeepwoodDistribution System (DS)

Distribution System - SW
Surface Water (SW)

DSMRT for Houston WaterMaximum Residence Time (MR)

Distribution System - GW
Ground Water (GW)

DSMRT for Plant 5Maximum Residence Time (MR)
DSMRT for Plant 7Maximum Residence Time (MR)
DSMRT for Plant 3Maximum Residence Time (MR)
DSMRT for Plant 2Maximum Residence Time (MR)
DSMRT for Plant 6Maximum Residence Time (MR)
DSMRT for Plant 4Maximum Residence Time (MR)

FAQ

Is City of Friendswood tap water safe to drink?

When was City of Friendswood last tested for water contamination?

The latest water samples were taken on March 12th, 2025.