CA American Water Co. - Duarte (CA) Water Quality

CA American Water Co. - Duarte is a large public water system in EPA region 9 that provides tap water for the 91008, 91016 zip codes. It has 21 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 4.37 µg/L. The maximum reported level of Manganese was 32 µg/L. There were 2 contamintants found in the CA American Water Co. - Duarte water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (16)

1,2,3-trichloropropane (16)

1,3-butadiene (16)

1,4-dioxane (16)

1-butanol (18)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (16)

1H,1H,2H,2H-perfluorodecane sulfonic acid (16)

1H,1H,2H,2H-perfluorohexane sulfonic acid (16)

1H,1H,2H,2H-perfluorooctane sulfonic acid (16)

2,4-dinitrotoluene (16)

2,6-dinitrotoluene (16)

2-methoxyethanol (18)

2-propen-1-ol (Allyl Alcohol) (18)

4,4'-dichloro dichlorophenyl ethylene (DDE) (16)

4,8-dioxa-3H-perfluorononanoic acid (16)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (16)

alpha-hexachlorocyclohexane (18)

bromochloromethane (Halon 1011) (16)

bromomethane (16)

Butylated Hydroxyanisole (18)

chlorate (18)

chlorodifluoromethane (HCFC-22) (16)

chloromethane (16)

chlorpyrifos (18)

chromium (18)

chromium-6 (18)

cobalt (18)

dimethipin (18)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (16)

ethoprop (18)

Germanium (18)

HAA5 (five regulated haloacetic acids) (8)

HAA6Br (six brominated haloacetic acids) (8)

HAA9 (nine haloacetic acids) (8)

hexafluoropropylene oxide dimer acid (GenX) (16)

lithium (16)

Manganese (18)

methyl-tertiary-butyl-ether (MTBE) (16)

molinate (16)

molybdenum (18)

N-ethyl perfluorooctanesulfonamidoacetic acid (16)

N-methyl perfluorooctanesulfonamidoacetic acid (16)

nitrobenzene (16)

nonafluoro-3,6-dioxaheptanoic acid (16)

o-toluidine (18)

oxyfluorfen (18)

perchlorate (16)

perfluoro(2-ethoxyethane)sulfonic acid (16)

perfluoro-3-methoxypropanoic acid (16)

perfluoro-4-methoxybutanoic acid (16)

perfluorobutanesulfonic acid (32)

perfluorobutanoic acid (16)

perfluorodecanoic acid (16)

perfluorododecanoic acid (16)

perfluoroheptanesulfonic acid (16)

perfluoroheptanoic acid (32)

perfluorohexanesulfonic acid (32)

perfluorohexanoic acid (16)

perfluorononanoic acid (32)

perfluorooctanesulfonic acid (32)

perfluorooctanoic acid (32)

perfluoropentanesulfonic acid (16)

perfluoropentanoic acid (16)

perfluorotetradecanoic acid (16)

perfluorotridecanoic acid (16)

perfluoroundecanoic acid (16)

profenofos (18)

quinoline (18)

s-ethyl-dipropylthiocarbamate (EPTC) (16)

strontium (18)

tebuconazole (18)

terbacil (16)

Total Permethrin (18)

tribufos (18)

vanadium (18)

Sampling Facilities

Las Lomas Well 2
Ground Water (GW)

Las Lomas Well 2 EPTDSEntry Point to the Distribution System (EP)
Las Lomas 2 post ChlorinationEntry Point to the Distribution System (EP)

Wiley Well
Ground Water (GW)

Wiley Well EPTDSEntry Point to the Distribution System (EP)

Santa Fe Well
Ground Water (GW)

Santa Fe Well EPTDSEntry Point to the Distribution System (EP)

Bacon Well
Ground Water (GW)

Bacon Well EPTDSEntry Point to the Distribution System (EP)

Buena Vista Well
Ground Water (GW)

Buena Vista Well EPTDSEntry Point to the Distribution System (EP)

Buena Vista Well #2
Ground Water (GW)

Buena Vista Well #2 EPTDSEntry Point to the Distribution System (EP)

Lemon Well
Ground Water (GW)

Lemon Well EPTDSEntry Point to the Distribution System (EP)

Live Oak Well
Ground Water (GW)

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

Encanto Well
Ground Water (GW)

EP #17 - Encanto Well TreatedEntry Point to the Distribution System (EP)

Crownhaven Well
Ground Water (GW)

EP #13 - Crownhaven Well TreatedEntry Point to the Distribution System (EP)

Distribution System
Ground Water (GW)

2040 S. Mountain AveDistribution System (DS)
402 E. Altern StDistribution System (DS)
411 E Benrud StDistribution System (DS)
2305 High Mesa DriveDistribution System (DS)

Fish Canyon Well
Ground Water (GW)

EP #14 - Fish Canyon Well TreatedEntry Point to the Distribution System (EP)

Distribution System
Ground Water (GW)

DSMRT for All Duarte wellsMaximum Residence Time (MR)

BUENA VISTA (LACFCD 4427A)
Ground Water (GW)

BUENA VISTA (LACFCD 01N/10W-31M01SR (SR)

BACON WELL LACFCD 4255A
Ground Water (GW)

BACON WELL LACFCD 4 01N/10W-29A03SR (SR)

CROWNHAVEN LACFCD 4256
Ground Water (GW)

CROWNHAVEN LACFCD 4 01N/10W-29R02SR (SR)

FISH CANYON LACFCD 4274
Ground Water (GW)

FISH CANYON LACFCD 01N/10W-22M01SR (SR)

SANTA FE
Ground Water (GW)

SANTA FE 01N/10W-31A01SR (SR)

WILEY WELL
Ground Water (GW)

WILEY WELL 01N/10W-21P01SR (SR)

ENCANTO WELL
Ground Water (GW)

ENCANTO WELL 01N/10W-28M02SR (SR)

LAS LOMAS WELL 02
Ground Water (GW)

LAS LOMAS WELL 02 01N/10W-29K02SR (SR)

FAQ

Is CA American Water Co. - Duarte tap water safe to drink?

When was CA American Water Co. - Duarte last tested for water contamination?

The latest water samples were taken on March 31st, 2025.