City of La Grande (OR) Water Quality

City of La Grande is a large public water system in EPA region 10 that provides tap water for the 97850 zip codes. It has 8 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 0.687 µg/L. The maximum reported level of Manganese was 141 µg/L. The maximum reported level of quinoline was 0.0655 µg/L. Some (1 of 10 or 10%) of the latest water samples showed levels of quinoline that were at or above unsafe concentration levels. There were 3 contamintants found in the City of La Grande 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 (10)

1,2,3-trichloropropane (10)

1,3-butadiene (10)

1,4-dioxane (10)

1-butanol (10)

11-chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (10)

1H,1H,2H,2H-perfluorodecane sulfonic acid (10)

1H,1H,2H,2H-perfluorohexane sulfonic acid (10)

1H,1H,2H,2H-perfluorooctane sulfonic acid (10)

2,4-dinitrotoluene (10)

2,6-dinitrotoluene (10)

2-methoxyethanol (10)

2-propen-1-ol (Allyl Alcohol) (10)

4,4'-dichloro dichlorophenyl ethylene (DDE) (10)

4,8-dioxa-3H-perfluorononanoic acid (10)

9-chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (10)

alpha-hexachlorocyclohexane (10)

bromochloromethane (Halon 1011) (10)

bromomethane (10)

Butylated Hydroxyanisole (10)

chlorate (20)

chlorodifluoromethane (HCFC-22) (10)

chloromethane (10)

chlorpyrifos (10)

chromium (20)

chromium-6 (20)

cobalt (20)

dimethipin (10)

dimethyl tetrachloroterephthalate (DCPA) mono/di-acid degradate (10)

ethoprop (10)

Germanium (10)

HAA5 (five regulated haloacetic acids) (4)

HAA6Br (six brominated haloacetic acids) (4)

HAA9 (nine haloacetic acids) (4)

hexafluoropropylene oxide dimer acid (GenX) (10)

lithium (10)

Manganese (10)

methyl-tertiary-butyl-ether (MTBE) (10)

molinate (10)

molybdenum (20)

N-ethyl perfluorooctanesulfonamidoacetic acid (10)

N-methyl perfluorooctanesulfonamidoacetic acid (10)

nitrobenzene (10)

nonafluoro-3,6-dioxaheptanoic acid (10)

o-toluidine (10)

oxyfluorfen (10)

perchlorate (10)

perfluoro(2-ethoxyethane)sulfonic acid (10)

perfluoro-3-methoxypropanoic acid (10)

perfluoro-4-methoxybutanoic acid (10)

perfluorobutanesulfonic acid (20)

perfluorobutanoic acid (10)

perfluorodecanoic acid (10)

perfluorododecanoic acid (10)

perfluoroheptanesulfonic acid (10)

perfluoroheptanoic acid (20)

perfluorohexanesulfonic acid (20)

perfluorohexanoic acid (10)

perfluorononanoic acid (20)

perfluorooctanesulfonic acid (20)

perfluorooctanoic acid (20)

perfluoropentanesulfonic acid (10)

perfluoropentanoic acid (10)

perfluorotetradecanoic acid (10)

perfluorotridecanoic acid (10)

perfluoroundecanoic acid (10)

profenofos (10)

quinoline (10)

s-ethyl-dipropylthiocarbamate (EPTC) (10)

strontium (20)

tebuconazole (10)

terbacil (10)

Total Permethrin (10)

tribufos (10)

vanadium (20)

Sampling Facilities

Well #3 (2nd & H)
Ground Water (GW)

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

Well #4 (12th Street)
Ground Water (GW)

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

Well #1 (Island City)
Ground Water (GW)

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

Well #2 (Gekeler Lane Well)
Ground Water (GW)

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

Well #5 (Hwy. 30)
Ground Water (GW)

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

Airport Armory
Ground Water (GW)

Airport ArmoryDistribution System (DS)

707 Hillcrest
Ground Water (GW)

707 HillcrestDistribution System (DS)

Distribution System
Ground Water (GW)

DSMRT for Well #3 (707 Hillcrest)Maximum Residence Time (MR)
DSMRT for Well #4 (Greyback Forestry)Maximum Residence Time (MR)
DSMRT for Well #1(Evergreen Adams)Maximum Residence Time (MR)
DSMRT for Well #2 (Benton Park)Maximum Residence Time (MR)
DSMRT for Well #5 (Airport Armory)Maximum Residence Time (MR)

FAQ

Is City of La Grande tap water safe to drink?

When was City of La Grande last tested for water contamination?

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