Is Astoria, OR Tap Water Safe? Quality & Contaminants

What was found in Astoria'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	800 µg/L 8% of the EPA limit 10000 µg/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2019 Highest in the city: 1882.5 µg/L — WICKIUP WATER DISTRICT · 1,630 people · 2018	4/9	SYR4
Copper	429.3 µg/L 33% of the EPA limit 1300 µg/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2018 Highest in the city: 617.8 µg/L — FERNHILL COMMUNITY WTR SYSTEM · 300 people · 2019	9/9	SYR4
Fluoride	536 µg/L 13% of the EPA limit 4000 µg/L Highest in the city: YOUNGS RIVER LEWIS & CLARK WD · 2,580 people · 2014	1/9	SYR4
Nitrate-Nitrite	480 µg/L 4.8% of the EPA limit 10000 µg/L Highest in the city: YOUNGS RIVER LEWIS & CLARK WD · 2,580 people · 2014	1/9	SYR4
TTHM	64.8 µg/L 81% of the EPA limit 80 µg/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2019 Highest in the city: 85.18 µg/L — YOUNGS RIVER LEWIS & CLARK WD · 2,580 people · 2019	8/9	SYR4
Total Haloacetic Acids (HAA5)	74.915 µg/L 125% of the EPA limit, at the 95th percentile of samples — 60 µg/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2019	9/9	SYR4
Lead	20 µg/L 133% of the EPA limit, at the 95th percentile of samples — 15 µg/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2018 Highest in the city: 41.5 µg/L — FERNHILL COMMUNITY WTR SYSTEM · 300 people · 2019	7/9	SYR4
Nitrite	16 µg/L 1.6% of the EPA limit 1000 µg/L Highest in the city: YOUNGS RIVER LEWIS & CLARK WD · 2,580 people · 2014	1/9	SYR4
Xylenes, Total	6.855 µg/L 0.1% of the EPA limit 10000 µg/L Highest in the city: WICKIUP WATER DISTRICT · 1,630 people · 2018	1/9	SYR4
Barium	6.66 µg/L 0.3% of the EPA limit 2000 µg/L Highest in the city: YOUNGS RIVER LEWIS & CLARK WD · 2,580 people · 2014	1/9	SYR4
Gross Alpha, Excl. Radon And U	3.61 pCi/L 24% of the EPA limit 15 pCi/L Highest in the city: KNAPPA WATER ASSOCIATION · 1,800 people · 2017	1/9	SYR4
Combined Radium (-226 And -228)	1.8 pCi/L 36% of the EPA limit 5 pCi/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2014	1/9	SYR4
Ethylbenzene	0.7900 µg/L 0.1% of the EPA limit 700 µg/L Highest in the city: WICKIUP WATER DISTRICT · 1,630 people · 2018	1/9	SYR4
Diquat	0.4000 µg/L 2% of the EPA limit 20 µg/L Highest in the city: WICKIUP WATER DISTRICT · 1,630 people · 2016	1/9	SYR4
Lead	0.0016 mg/L 10% of the EPA limit 0.0150 mg/L Main supplier: ASTORIA, CITY OF · 10,181 people · 2024 Highest in the city: 0.0040 mg/L — WICKIUP WATER DISTRICT · 1,630 people · 2023	9/9	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 Astoria

Supplier	Population served
ASTORIA, CITY OF	10,181
YOUNGS RIVER LEWIS & CLARK WD	2,580
KNAPPA WATER ASSOCIATION	1,800
WICKIUP WATER DISTRICT	1,630
OLNEY-WALLUSKI WATER ASSN	575
BURNSIDE WATER ASSOCIATION	350
JOHN DAY WATER DISTRICT	350
WILLOW DALE WATER DISTRICT	310
FERNHILL COMMUNITY WTR SYSTEM	300

Frequently asked questions about Astoria tap water

Is Astoria tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Astoria. 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 Astoria?

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

What contaminants are in Astoria's water?

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