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Tap water quality report

Dexter, OR

EPA monitoring detected 9 contaminants across the 2 water suppliers serving Dexter. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
195
people served
9
contaminants found
Oregon rankings Lead in Oregon PFAS in Oregon

What was found in Dexter's water

The level at the city's main supplier, the highest level anywhere in the city, the EPA limit for each, and where every figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
439 µg/L 4.4%
of the EPA limit 10000 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2019
2/2 SYR4
Nitrate-Nitrite
270 µg/L 2.7%
of the EPA limit 10000 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2019
1/2 SYR4
Arsenic
20.465 µg/L 205%
of the EPA limit, at the 95th percentile of samples — 10 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2019
Highest in the city: 236.515 µg/L — DEXTER OAKS CO-OP · 75 people · 2019
2/2 SYR4
Copper
21 µg/L 1.6%
of the EPA limit 1300 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2018
Highest in the city: 56.2 µg/L — DEXTER OAKS CO-OP · 75 people · 2019
2/2 SYR4
TTHM
17.21 µg/L 22%
of the EPA limit 80 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2019
1/2 SYR4
Lead
9.5725 µg/L 64%
of the EPA limit 15 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2018
Highest in the city: 9.83 µg/L — DEXTER OAKS CO-OP · 75 people · 2019
2/2 SYR4
Barium
6.08 µg/L 0.3%
of the EPA limit 2000 µg/L
Highest in the city: DEXTER OAKS CO-OP · 75 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
2.2 µg/L 3.7%
of the EPA limit 60 µg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2019
1/2 SYR4
Lead
0.0054 mg/L 36%
of the EPA limit 0.0150 mg/L
Main supplier: DEXTER SHORES MOBILE HOME PARK · 120 people · 2024
Highest in the city: 0.0099 mg/L — DEXTER OAKS CO-OP · 75 people · 2022
2/2 LCR
Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of the system's samples — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately. These are the utilities' own EPA-reported results, not a city-wide average. A detection means the lab measured the substance — it isn't the same as exceeding a legal limit. Hover a source tag to see the EPA program and years behind each figure.

Water suppliers serving Dexter

SupplierPopulation served
DEXTER SHORES MOBILE HOME PARK 120
DEXTER OAKS CO-OP 75

Frequently asked questions about Dexter tap water

Is Dexter tap water safe to drink?

EPA testing detected 9 contaminants in the water serving Dexter. A detection isn't the same as a violation — most detected levels are within federal limits. Check the level and source for each contaminant above, and your utility's annual Consumer Confidence Report for the official compliance status.

How many water suppliers serve Dexter?

2 public water suppliers report drinking-water monitoring for Dexter, Oregon to the EPA. Each is listed above with its population served.

What contaminants are in Dexter's water?

The contaminants EPA monitoring detected in Dexter include Nitrate, Nitrate-Nitrite, Arsenic, Copper, TTHM. The full list, with the level at the main supplier and the data source, is in the table above.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.