North Alamo WSC (TX) Water Quality

North Alamo WSC is a large public water system in EPA region 6 that provides tap water for the 78538, 78549, 78570, 78589 zip codes. It has 16 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of 1-butanol was 2.9 µg/L. The maximum reported level of HAA5 (five regulated haloacetic acids) was 61.181 µg/L. Some (1 of 44 or 2%) 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 18.2 µg/L. There were 3 contamintants found in the North Alamo WSC 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 (22)

1,2,3-trichloropropane (22)

1,3-butadiene (22)

1,4-dioxane (22)

1-butanol (26)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (26)

1H,1H,2H,2H-perfluorodecane sulfonic acid (26)

1H,1H,2H,2H-perfluorohexane sulfonic acid (26)

1H,1H,2H,2H-perfluorooctane sulfonic acid (26)

2,4-dinitrotoluene (23)

2,6-dinitrotoluene (23)

2-methoxyethanol (26)

2-propen-1-ol (Allyl Alcohol) (26)

4,4'-dichloro dichlorophenyl ethylene (DDE) (23)

4,8-dioxa-3H-perfluorononanoic acid (26)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (26)

alpha-hexachlorocyclohexane (26)

anatoxin-a (48)

bromochloromethane (Halon 1011) (22)

bromomethane (22)

Butylated Hydroxyanisole (26)

chlorate (46)

chlorodifluoromethane (HCFC-22) (22)

chloromethane (22)

chlorpyrifos (26)

chromium (46)

chromium-6 (46)

cobalt (46)

cylindrospermopsin (48)

dimethipin (26)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (24)

ethoprop (26)

Germanium (26)

HAA5 (five regulated haloacetic acids) (44)

HAA6Br (six brominated haloacetic acids) (44)

HAA9 (nine haloacetic acids) (44)

hexafluoropropylene oxide dimer acid (GenX) (26)

lithium (26)

Manganese (26)

methyl-tertiary-butyl-ether (MTBE) (24)

molinate (23)

molybdenum (46)

N-ethyl perfluorooctanesulfonamidoacetic acid (26)

N-methyl perfluorooctanesulfonamidoacetic acid (26)

nitrobenzene (24)

nonafluoro-3,6-dioxaheptanoic acid (26)

o-toluidine (26)

oxyfluorfen (26)

perchlorate (24)

perfluoro(2-ethoxyethane)sulfonic acid (26)

perfluoro-3-methoxypropanoic acid (26)

perfluoro-4-methoxybutanoic acid (26)

perfluorobutanesulfonic acid (48)

perfluorobutanoic acid (26)

perfluorodecanoic acid (26)

perfluorododecanoic acid (26)

perfluoroheptanesulfonic acid (26)

perfluoroheptanoic acid (48)

perfluorohexanesulfonic acid (48)

perfluorohexanoic acid (26)

perfluorononanoic acid (48)

perfluorooctanesulfonic acid (48)

perfluorooctanoic acid (48)

perfluoropentanesulfonic acid (26)

perfluoropentanoic acid (26)

perfluorotetradecanoic acid (26)

perfluorotridecanoic acid (26)

perfluoroundecanoic acid (26)

profenofos (26)

quinoline (26)

s-ethyl-dipropylthiocarbamate (EPTC) (23)

strontium (46)

tebuconazole (26)

terbacil (23)

total microcystins (48)

Total Permethrin (26)

tribufos (26)

vanadium (46)

Sampling Facilities

Plant 6 (Monte Alto)
Surface Water (SW)

Sample SiteEntry Point to the Distribution System (EP)

Plant 2
Surface Water (SW)

Sample SiteEntry Point to the Distribution System (EP)

Plant 4
Surface Water (SW)

Sample SiteEntry Point to the Distribution System (EP)

Plant 5
Surface Water (SW)

Sample SiteEntry Point to the Distribution System (EP)

Plant 1
Surface Water (SW)

Sample SiteEntry Point to the Distribution System (EP)

Plant 7
Surface Water (SW)

Sample SiteEntry Point to the Distribution System (EP)

La Sara RO
Ground Water (GW)

Sample SiteEntry Point to the Distribution System (EP)

Distribution System
Surface Water (SW)

St Joseph TW, 8310 Highland, San Carlos 78542Distribution System (DS)
201 McKinley, Hargil, Tx 78549Distribution System (DS)
504 OWASSA RD, SAN JUAN,TX 78589Distribution System (DS)
1111 Washingtonian, San Juan, Tx 78589Distribution System (DS)
3005 Guerra St., Mercedes, Tx 78596Distribution System (DS)
4185 MIle 5 1/2 W, Weslaco, Tx 78596Distribution System (DS)
Sunrise Hill Pk (Office), Weslaco, Tx 78596Distribution System (DS)
204 Live Oak St, Monte Alto 78538Distribution System (DS)
18666 FM 498 E, Stillman 2, Lyford, Tx 78569Distribution System (DS)
5047 Mi 15 1/2 N, Edcouch, Tx 78538Distribution System (DS)
9TH and Palomar,San Perlita 78580Distribution System (DS)

Distribution System
Multiple Sources (MX)

Site 1 - St. Joseph TW Ch.Maximum Residence Time (MR)
Site 2 - NE Corner FM 49Maximum Residence Time (MR)
Site 4 - 1111 WashingtonMaximum Residence Time (MR)
Site 5 - Sunrise Hill Par.Maximum Residence Time (MR)
Site 6 - 314 Blk. NE of OMaximum Residence Time (MR)
204 Live Oak St.Maximum Residence Time (MR)
Site 3 - San PerlitaMaximum Residence Time (MR)

EP003
Surface Water (SW)

SAMPLE SITE @ 3-FM 1015 & FM490Entry Point to the Distribution System (EP)

PLANT 1
Surface Water (SW)

PLANT_1Entry Point to the Distribution System (EP)

PLANT 2
Surface Water (SW)

PLANT_2Entry Point to the Distribution System (EP)

PLANT 3
Surface Water (SW)

PLANT_3Entry Point to the Distribution System (EP)

PLANT 4
Surface Water (SW)

PLANT_4Entry Point to the Distribution System (EP)

PLANT 5
Surface Water (SW)

PLANT_5Entry Point to the Distribution System (EP)

PLANT 6 MONTE ALTO
Surface Water (SW)

PLANT_6_MONTE_ALTOEntry Point to the Distribution System (EP)

FAQ

Is North Alamo WSC tap water safe to drink?

When was North Alamo WSC last tested for water contamination?

The latest water samples were taken on February 13th, 2024.