City of Hermiston (OR) Water Quality

City of Hermiston is a large public water system in EPA region 10 that provides tap water for the 97838 zip codes. It has 10 facilities where the water supply was tested for 78 chemical contaminants that impact tap water quality and human health.

The maximum reported level of HAA5 (five regulated haloacetic acids) was 34.3 µg/L. The maximum reported level of Manganese was 8.1 µg/L. There were 2 contamintants found in the City of Hermiston water supply at levels that were above the minimum reporting level.

Contaminants

1,1-dichloroethane (12)

1,2,3-trichloropropane (12)

1,3-butadiene (12)

1,4-dioxane (12)

1-butanol (12)

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

1H,1H,2H,2H-perfluorodecane sulfonic acid (11)

1H,1H,2H,2H-perfluorohexane sulfonic acid (11)

1H,1H,2H,2H-perfluorooctane sulfonic acid (11)

2,4-dinitrotoluene (12)

2,6-dinitrotoluene (12)

2-methoxyethanol (12)

2-propen-1-ol (Allyl Alcohol) (12)

4,4'-dichloro dichlorophenyl ethylene (DDE) (12)

4,8-dioxa-3H-perfluorononanoic acid (11)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (11)

alpha-hexachlorocyclohexane (12)

anatoxin-a (8)

bromochloromethane (Halon 1011) (12)

bromomethane (12)

Butylated Hydroxyanisole (12)

chlorate (16)

chlorodifluoromethane (HCFC-22) (12)

chloromethane (12)

chlorpyrifos (12)

chromium (16)

chromium-6 (16)

cobalt (16)

cylindrospermopsin (8)

dimethipin (12)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (12)

ethoprop (12)

Germanium (12)

HAA5 (five regulated haloacetic acids) (16)

HAA6Br (six brominated haloacetic acids) (16)

HAA9 (nine haloacetic acids) (16)

hexafluoropropylene oxide dimer acid (GenX) (11)

lithium (10)

Manganese (12)

methyl-tertiary-butyl-ether (MTBE) (12)

molinate (12)

molybdenum (16)

N-ethyl perfluorooctanesulfonamidoacetic acid (10)

N-methyl perfluorooctanesulfonamidoacetic acid (10)

nitrobenzene (12)

nonafluoro-3,6-dioxaheptanoic acid (11)

o-toluidine (12)

oxyfluorfen (12)

perchlorate (12)

perfluoro(2-ethoxyethane)sulfonic acid (11)

perfluoro-3-methoxypropanoic acid (11)

perfluoro-4-methoxybutanoic acid (11)

perfluorobutanesulfonic acid (22)

perfluorobutanoic acid (11)

perfluorodecanoic acid (11)

perfluorododecanoic acid (11)

perfluoroheptanesulfonic acid (11)

perfluoroheptanoic acid (23)

perfluorohexanesulfonic acid (22)

perfluorohexanoic acid (11)

perfluorononanoic acid (23)

perfluorooctanesulfonic acid (22)

perfluorooctanoic acid (23)

perfluoropentanesulfonic acid (11)

perfluoropentanoic acid (11)

perfluorotetradecanoic acid (10)

perfluorotridecanoic acid (10)

perfluoroundecanoic acid (11)

profenofos (12)

quinoline (12)

s-ethyl-dipropylthiocarbamate (EPTC) (12)

strontium (16)

tebuconazole (12)

terbacil (12)

total microcystins (8)

Total Permethrin (12)

tribufos (12)

vanadium (16)

Sampling Facilities

Well #2 (Newport Park)
Ground Water (GW)

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

Well #4 (4th St. City Sh.)
Ground Water (GW)

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

Well #5 (Harper Rd.)
Ground Water (GW)

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

Well #6 (Hwy. 395)
Ground Water (GW)

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

Columbia River WTP
Surface Water (SW)

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

Distribution System
Multiple Sources (MX)

IDSE #6 SEWAGE TREATMENT PLANTDistribution System (DS)

Distribution System
Surface Water (SW)

3 SNAKCORPDistribution System (DS)

Distribution System
Multiple Sources (MX)

WESTSIDE LIFT STATIONDistribution System (DS)

Distribution System
Multiple Sources (MX)

NEAR SANDSTONE MIDDLE SCHOOLDistribution System (DS)

Distribution System
Multiple Sources (MX)

78035 Hwy. 207Maximum Residence Time (MR)
78035 Hwy 207Maximum Residence Time (MR)

FAQ

Is City of Hermiston tap water safe to drink?

When was City of Hermiston last tested for water contamination?

The latest water samples were taken on June 10th, 2024.