Santa Maria Water Department (CA) Water Quality

Santa Maria Water Department is a large public water system in EPA region 9 that provides tap water for the 93454, 93455 zip codes. It has 21 facilities where the water supply was tested for 85 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 11.4 µg/L. The maximum reported level of Manganese was 1 µg/L. There were 2 contamintants found in the Santa Maria Water Department water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (4)

1,2,3-trichloropropane (4)

1,3-butadiene (4)

1,4-dioxane (4)

1-butanol (4)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (2)

17-alpha-ethynylestradiol (4)

17-beta-estradiol (4)

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

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

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

2,4-dinitrotoluene (27)

2,6-dinitrotoluene (27)

2-methoxyethanol (4)

2-propen-1-ol (Allyl Alcohol) (4)

4,4'-dichloro dichlorophenyl ethylene (DDE) (27)

4,8-dioxa-3H-perfluorononanoic acid (2)

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

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (2)

alpha-hexachlorocyclohexane (4)

anatoxin-a (8)

bromochloromethane (Halon 1011) (4)

bromomethane (4)

Butylated Hydroxyanisole (4)

chlorate (8)

chlorodifluoromethane (HCFC-22) (4)

chloromethane (4)

chlorpyrifos (4)

chromium (8)

chromium-6 (8)

cobalt (8)

cylindrospermopsin (8)

dimethipin (4)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (18)

equilin (4)

estriol (4)

estrone (4)

ethoprop (4)

Germanium (4)

HAA5 (five regulated haloacetic acids) (16)

HAA6Br (six brominated haloacetic acids) (16)

HAA9 (nine haloacetic acids) (16)

hexafluoropropylene oxide dimer acid (GenX) (2)

lithium (2)

Manganese (4)

methyl-tertiary-butyl-ether (MTBE) (36)

molinate (27)

molybdenum (8)

N-ethyl perfluorooctanesulfonamidoacetic acid (2)

N-methyl perfluorooctanesulfonamidoacetic acid (2)

nitrobenzene (36)

nonafluoro-3,6-dioxaheptanoic acid (2)

o-toluidine (4)

oxyfluorfen (4)

perchlorate (27)

perfluoro(2-ethoxyethane)sulfonic acid (2)

perfluoro-3-methoxypropanoic acid (2)

perfluoro-4-methoxybutanoic acid (2)

perfluorobutanesulfonic acid (6)

perfluorobutanoic acid (2)

perfluorodecanoic acid (2)

perfluorododecanoic acid (2)

perfluoroheptanesulfonic acid (2)

perfluoroheptanoic acid (6)

perfluorohexanesulfonic acid (6)

perfluorohexanoic acid (2)

perfluorononanoic acid (6)

perfluorooctanesulfonic acid (6)

perfluorooctanoic acid (6)

perfluoropentanesulfonic acid (2)

perfluoropentanoic acid (2)

perfluorotetradecanoic acid (2)

perfluorotridecanoic acid (2)

perfluoroundecanoic acid (2)

profenofos (4)

quinoline (4)

s-ethyl-dipropylthiocarbamate (EPTC) (27)

strontium (8)

tebuconazole (4)

terbacil (27)

testosterone (4)

total microcystins (8)

Total Permethrin (4)

tribufos (4)

vanadium (8)

Sampling Facilities

Blending and Disinfection Facility
Multiple Sources (MX)

EP #26 - Header Line/SPW BlendEntry Point to the Distribution System (EP)
add ucmr sp nameEntry Point to the Distribution System (EP)

City of Santa Maria Distribution System
Multiple Sources (MX)

Sample Station #5Distribution System (DS)
Sample Station #8Distribution System (DS)
Sample Station #12Distribution System (DS)
Sample Station #17Distribution System (DS)

Distribution System - MX
Multiple Sources (MX)

DSMRT for Header Line/SPW BlendMaximum Residence Time (MR)

EP- #024 WELL 05AS - TREATED
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #023 WELL 07S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #022 WELL 08S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #021 WELLS 09S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #020 WELL 10S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #019 WELL 11S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #018 WELLS 12S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #017 WELL 13S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

EP- #016 WELL 14S - TRT CL
Ground Water (GW)

add ucmr sp nameEntry Point to the Distribution System (EP)

WELL 05AS
Ground Water (GW)

WELL 05AS 09N/34W-03F10SR (SR)

WELL 07S
Ground Water (GW)

WELL 07S 10N/34W-34Q01SR (SR)

WELL 08S
Ground Water (GW)

WELL 08S 10N/34W-27L01SR (SR)

WELL 09S
Ground Water (GW)

WELL 09S 10N/34W-28J01SR (SR)

WELL 10S
Ground Water (GW)

WELL 10S 10N/34W-28M01SR (SR)

WELL 11S
Ground Water (GW)

WELL 11S 10N/34W-33A01SR (SR)

WELL 12S (1992)
Ground Water (GW)

WELL 12S (1992) 10N/34W-33D01SR (SR)

WELL 13S
Ground Water (GW)

WELL 13S 4210011-013SR (SR)

WELL 14S
Ground Water (GW)

WELL 14S 4210011-014SR (SR)

FAQ

Is Santa Maria Water Department tap water safe to drink?

When was Santa Maria Water Department last tested for water contamination?

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