Is Scappoose, OR Tap Water Safe? Quality & Contaminants

What was found in Scappoose'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.

Contaminant	Level vs EPA limit	Suppliers	Source
Nitrate	776 µg/L 7.8% of the EPA limit 10000 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019 Highest in the city: 6762 µg/L — DEER ISLAND VILLAGE MHP · 50 people · 2019	8/10	SYR4
Nitrate-Nitrite	774.35 µg/L 7.7% of the EPA limit 10000 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019 Highest in the city: 3300 µg/L — COLUMBIA ACRES WATER ASSOC · 110 people · 2015	6/10	SYR4
Copper	382.8 µg/L 29% of the EPA limit 1300 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2017 Highest in the city: 1231.15 µg/L — DEER ISLAND VILLAGE MHP · 50 people · 2017	7/10	SYR4
Fluoride	889 µg/L 22% of the EPA limit 4000 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019	6/10	SYR4
TTHM	29.84 µg/L 37% of the EPA limit 80 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019 Highest in the city: 93.4 µg/L — DIKESIDE MOORAGE · 45 people · 2019	6/10	SYR4
Nitrite	78.1 µg/L 7.8% of the EPA limit 1000 µg/L Highest in the city: DEER ISLAND VILLAGE MHP · 50 people · 2019	2/10	SYR4
Barium	31.2875 µg/L 1.6% of the EPA limit 2000 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019	6/10	SYR4
Lead	24 µg/L 160% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019 Highest in the city: 24.1 µg/L — CEDAR TREE MOBILE HOME PARK · 50 people · 2019	8/10	SYR4
Total Haloacetic Acids (HAA5)	8.105 µg/L 14% of the EPA limit 60 µg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2019 Highest in the city: 15.56 µg/L — DIKESIDE MOORAGE · 45 people · 2019	6/10	SYR4
Arsenic	10.65 µg/L 107% of the EPA limit, at the 95th percentile of samples — 10 µg/L Highest in the city: DIKESIDE MOORAGE · 45 people · 2019	2/10	SYR4
Toluene	3.2 µg/L 0.3% of the EPA limit 1000 µg/L Highest in the city: CEDAR TREE MOBILE HOME PARK · 50 people · 2019	1/10	SYR4
Gross Alpha, Excl. Radon And U	1.5 pCi/L 10% of the EPA limit 15 pCi/L Highest in the city: PARADISE MOORAGE · 90 people · 2019	1/10	SYR4
Lead	0.0 mg/L 0% of the EPA limit 0.0150 mg/L Main supplier: SCAPPOOSE, CITY OF · 8,710 people · 2023 Highest in the city: 0.0062 mg/L — COLUMBIA HILLS HOA · 84 people · 2025	9/10	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 Scappoose

Supplier	Population served
SCAPPOOSE, CITY OF	8,710
COLUMBIA ACRES WATER ASSOC	110
PARADISE MOORAGE	90
COLUMBIA HILLS HOA	84
TAMARACK MOBILE HOME PARK	80
LAUREL RIDGE MHP	70
CEDAR TREE MOBILE HOME PARK	50
DEER ISLAND VILLAGE MHP-FAWN LANE	50
DEER ISLAND VILLAGE MHP	50
DIKESIDE MOORAGE	45

Frequently asked questions about Scappoose tap water

Is Scappoose tap water safe to drink?

EPA testing detected 13 contaminants in the water serving Scappoose. 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 Scappoose?

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

What contaminants are in Scappoose's water?

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