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Tap water quality report

Longview, WA

EPA monitoring detected 17 contaminants across the 2 water suppliers serving Longview. A detection doesn't automatically mean the water is unsafe — see the level at the main supplier for each below, with its EPA source and period.

2
water suppliers
57,807
people served
17
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Longview'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.

ContaminantLevel vs EPA limitSuppliersSource
Fluoride
590.5 µg/L 15%
of the EPA limit 4000 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2016
1/2 SYR4
Nitrate
270 µg/L 2.7%
of the EPA limit 10000 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
TTHM
59.635 µg/L 75%
of the EPA limit 80 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Chloroform
45 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Total Haloacetic Acids (HAA5)
31 µg/L 52%
of the EPA limit 60 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Trichloroacetic Acid
20 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Dibromoacetic Acid
13.85 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Monobromoacetic Acid
13.85 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Dichloroacetic Acid
12.35 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Bromodichloromethane
12 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Barium
5.57 µg/L 0.3%
of the EPA limit 2000 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2016
1/2 SYR4
Gross Beta Particle Activity
4.5 pCi/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2018
1/2 SYR4
Dibromochloromethane
3.28 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Arsenic
2.95 µg/L 30%
of the EPA limit 10 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2016
1/2 SYR4
Monochloroacetic Acid
2.69 µg/L
No EPA limit set
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2019
1/2 SYR4
Chromium
2 µg/L 2%
of the EPA limit 100 µg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2016
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: LONGVIEW WATER DEPARTMENT · 57,617 people · 2023
Highest in the city: 0.0010 mg/L — Beacon Hill East · 190 people · 2023
2/2 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 Longview

SupplierPopulation served
LONGVIEW WATER DEPARTMENT 57,617
Beacon Hill East 190

Frequently asked questions about Longview tap water

Is Longview tap water safe to drink?

EPA testing detected 17 contaminants in the water serving Longview. 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 Longview?

2 public water suppliers report drinking-water monitoring for Longview, Washington to the EPA. Each is listed above with its population served.

What contaminants are in Longview's water?

The contaminants EPA monitoring detected in Longview include Fluoride, Nitrate, TTHM, Chloroform, Total Haloacetic Acids (HAA5). 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.