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Tap water quality report

Pendleton, OR

EPA monitoring detected 18 contaminants across the 8 water suppliers serving Pendleton. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

8
water suppliers
17,564
people served
18
contaminants found
Oregon rankings Lead in Oregon PFAS in Oregon

What was found in Pendleton's water

The highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
6000 µg/L 60%
of the EPA limit 10000 µg/L
 7/8 SYR4
Nitrate-Nitrite
3020 µg/L 30%
of the EPA limit 10000 µg/L
 6/8 SYR4
Fluoride
534 µg/L 13%
of the EPA limit 4000 µg/L
 8/8 SYR4
Copper
267 µg/L 21%
of the EPA limit 1300 µg/L
 6/8 SYR4
Nitrite
86.7 µg/L 8.7%
of the EPA limit 1000 µg/L
 1/8 SYR4
Barium
60 µg/L 3%
of the EPA limit 2000 µg/L
 5/8 SYR4
TTHM
56.2 µg/L 70%
of the EPA limit 80 µg/L
 2/8 SYR4
Total Haloacetic Acids (HAA5)
43.1 µg/L 72%
of the EPA limit 60 µg/L
 1/8 SYR4
Lead
40 µg/L 267%
of the EPA limit, in the worst sample — 15 µg/L
 5/8 SYR4
Gross Beta Particle Activity
7.58 pCi/L
No EPA limit set
 1/8 SYR4
Gross Alpha, Excl. Radon And U
6.38 pCi/L 43%
of the EPA limit 15 pCi/L
 4/8 SYR4
Selenium
4.08 µg/L 8.2%
of the EPA limit 50 µg/L
 3/8 SYR4
Arsenic
2.5 µg/L 25%
of the EPA limit 10 µg/L
 6/8 SYR4
Combined Radium (-226 And -228)
2.41 pCi/L 48%
of the EPA limit 5 pCi/L
 2/8 SYR4
Chromium
2.16 µg/L 2.2%
of the EPA limit 100 µg/L
 5/8 SYR4
Combined Uranium
2.13 µg/L 7.1%
of the EPA limit 30 µg/L
 5/8 SYR4
PFHXS
0.0048 µg/L
No EPA limit set
 1/8 UCMR-5
Lead
0.0040 mg/L 27%
of the EPA limit 0.0150 mg/L
 8/8 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 single worst sample on record — 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 Pendleton

SupplierPopulation served
PENDLETON, CITY OF 16,996
RIETH WATER DISTRICT 150
HERITAGE IMPROVEMENT DISTRICT 125
MCKAY ACRES IMPROVEMENT DIST 75
GREEN MEADOWS WTR CORPORATION 75
HALLS TRAILER COURT 60
STEWARTS ADDITION 50
DESIRE FOR HEALING, INC 33

Frequently asked questions about Pendleton tap water

Is Pendleton tap water safe to drink?

EPA testing detected 18 contaminants in the water serving Pendleton. 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 Pendleton?

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

What contaminants are in Pendleton's water?

The contaminants EPA monitoring detected in Pendleton include Nitrate, Nitrate-Nitrite, Fluoride, Copper, Nitrite. The full list, with the highest level found 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.