What was found in Clatskanie'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 | 1045 µg/L 10% of the EPA limit 10000 µg/L Main supplier: CLATSKANIE, CITY OF · 2,188 people · 2019
Highest in the city: 2000 µg/L — MARSHLAND WATER ASSOCIATION · 70 people · 2019 | 6/7 | SYR4 |
| Nitrate-Nitrite | 1855 µg/L 19% of the EPA limit 10000 µg/L Highest in the city: MARSHLAND WATER ASSOCIATION · 70 people · 2013 | 5/7 | SYR4 |
| Copper | 267.4 µg/L 21% of the EPA limit 1300 µg/L Main supplier: CLATSKANIE, CITY OF · 2,188 people · 2018
Highest in the city: 1024.4 µg/L — WESTLAND WATER ASSOCIATION · 25 people · 2019 | 7/7 | SYR4 |
| Fluoride | 140 µg/L 3.5% of the EPA limit 4000 µg/L Highest in the city: LOST CREEK HEIGHTS WTR ASSOC · 100 people · 2019 | 2/7 | SYR4 |
| Nitrite | 115 µg/L 12% of the EPA limit 1000 µg/L Highest in the city: QUINCY WATER ASSOCIATION · 300 people · 2018 | 3/7 | SYR4 |
| Barium | 110 µg/L 5.5% of the EPA limit 2000 µg/L Highest in the city: QUINCY WATER ASSOCIATION · 300 people · 2018 | 4/7 | SYR4 |
| Total Haloacetic Acids (HAA5) | 50.06 µg/L 83% of the EPA limit 60 µg/L Main supplier: CLATSKANIE, CITY OF · 2,188 people · 2019
Highest in the city: 84.18 µg/L — MIDLAND WATER ASSOCIATION · 160 people · 2019 | 4/7 | SYR4 |
| TTHM | 42.62 µg/L 53% of the EPA limit 80 µg/L Main supplier: CLATSKANIE, CITY OF · 2,188 people · 2019
Highest in the city: 66.94 µg/L — MARSHLAND WATER ASSOCIATION · 70 people · 2019 | 4/7 | SYR4 |
| Lead | 15.25 µg/L 102% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: CLATSKANIE, CITY OF · 2,188 people · 2018 | 6/7 | SYR4 |
| Combined Radium (-226 And -228) | 1.6 pCi/L 32% of the EPA limit 5 pCi/L Highest in the city: QUINCY WATER ASSOCIATION · 300 people · 2018 | 1/7 | SYR4 |
| Lead | 0.0013 mg/L 8.5% of the EPA limit 0.0150 mg/L Main supplier: CLATSKANIE, CITY OF · 2,188 people · 2024
Highest in the city: 0.0050 mg/L — MARSHLAND WATER ASSOCIATION · 70 people · 2027 | 7/7 | LCR |
Water suppliers serving Clatskanie
| Supplier | Population served |
|---|---|
| CLATSKANIE, CITY OF | 2,188 |
| QUINCY WATER ASSOCIATION | 300 |
| MIDLAND WATER ASSOCIATION | 160 |
| LOST CREEK HEIGHTS WTR ASSOC | 100 |
| MARSHLAND WATER ASSOCIATION | 70 |
| SWEDETOWN WATER ASSOC | 40 |
| WESTLAND WATER ASSOCIATION | 25 |
Frequently asked questions about Clatskanie tap water
Is Clatskanie tap water safe to drink?
EPA testing detected 11 contaminants in the water serving Clatskanie. 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 Clatskanie?
7 public water suppliers report drinking-water monitoring for Clatskanie, Oregon to the EPA. Each is listed above with its population served.
What contaminants are in Clatskanie's water?
The contaminants EPA monitoring detected in Clatskanie include Nitrate, Nitrate-Nitrite, Copper, Fluoride, Nitrite. 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.