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Tap water quality report

Clackamas, OR

EPA monitoring detected 12 contaminants across the 5 water suppliers serving Clackamas. A detection doesn't automatically mean the water is unsafe — see the highest level found for each below, with its EPA source and period.

5
water suppliers
50,656
people served
12
contaminants found
Oregon rankings Lead in Oregon PFAS in Oregon

What was found in Clackamas'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
700 µg/L 7%
of the EPA limit 10000 µg/L
 3/5 SYR4
Nitrate-Nitrite
700 µg/L 7%
of the EPA limit 10000 µg/L
 1/5 SYR4
Copper
346 µg/L 27%
of the EPA limit 1300 µg/L
 4/5 SYR4
Lead
256 µg/L 1707%
of the EPA limit, in the worst sample — 15 µg/L
 4/5 SYR4
Fluoride
140 µg/L 3.5%
of the EPA limit 4000 µg/L
 1/5 SYR4
TTHM
77.8 µg/L 97%
of the EPA limit 80 µg/L
 3/5 SYR4
Total Haloacetic Acids (HAA5)
59.8 µg/L 100%
of the EPA limit 60 µg/L
 3/5 SYR4
Nitrite
58.1 µg/L 5.8%
of the EPA limit 1000 µg/L
 1/5 SYR4
Barium
36.3 µg/L 1.8%
of the EPA limit 2000 µg/L
 3/5 SYR4
Arsenic
8 µg/L 80%
of the EPA limit 10 µg/L
 1/5 SYR4
Gross Alpha, Excl. Radon And U
4.5 pCi/L 30%
of the EPA limit 15 pCi/L
 1/5 SYR4
Lead
0.0020 mg/L 13%
of the EPA limit 0.0150 mg/L
 5/5 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 Clackamas

SupplierPopulation served
CLACKAMAS RIVER WATER 29,918
CLACKAMAS RIVER WATER - CLAIRMONT 19,928
RIVERBEND MOBILE HOME PARK 600
ESTACADA MOBILE VILLAGE 150
HIGHLAND VIEW MOBILE HOME PARK 60

Frequently asked questions about Clackamas tap water

Is Clackamas tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Clackamas. 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 Clackamas?

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

What contaminants are in Clackamas's water?

The contaminants EPA monitoring detected in Clackamas include Nitrate, Nitrate-Nitrite, Copper, Lead, Fluoride. 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.