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Tap water quality report

Spokane Valley, WA

EPA monitoring detected 15 contaminants across the 4 water suppliers serving Spokane Valley. 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.

4
water suppliers
32,788
people served
15
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Spokane Valley'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
Nitrate
2645.5 µg/L 26%
of the EPA limit 10000 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
Highest in the city: 2980 µg/L — EAST SPOKANE WATER DIST 1 · 4,285 people · 2019
4/4 SYR4
Nitrate-Nitrite
2625 µg/L 26%
of the EPA limit 10000 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
4/4 SYR4
Barium
69.7 µg/L 3.5%
of the EPA limit 2000 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
Highest in the city: 75.54 µg/L — EAST SPOKANE WATER DIST 1 · 4,285 people · 2019
4/4 SYR4
Chromium
1 µg/L 1%
of the EPA limit 100 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
Highest in the city: 16 µg/L — CARNHOPE IRRIGATION DISTRICT 7 · 1,602 people · 2016
3/4 SYR4
Copper
10.487 µg/L 0.8%
of the EPA limit 1300 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
4/4 SYR4
TTHM
6.417 µg/L 8%
of the EPA limit 80 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
2/4 SYR4
Arsenic
4.845 µg/L 48%
of the EPA limit 10 µg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2019
3/4 SYR4
Gross Beta Particle Activity
4 pCi/L
No EPA limit set
Main supplier: VERA WATER & POWER · 24,692 people · 2012
1/4 SYR4
Dibromochloromethane
2.346 µg/L
No EPA limit set
Main supplier: VERA WATER & POWER · 24,692 people · 2019
1/4 SYR4
Bromoform
2.03 µg/L
No EPA limit set
Main supplier: VERA WATER & POWER · 24,692 people · 2019
1/4 SYR4
Bromodichloromethane
1.925 µg/L
No EPA limit set
Main supplier: VERA WATER & POWER · 24,692 people · 2019
1/4 SYR4
Lead
1.38 µg/L 9.2%
of the EPA limit 15 µg/L
Highest in the city: HUTCHINSON IRRIGATION DIST #16 · 2,209 people · 2016
1/4 SYR4
Chloroform
1.185 µg/L
No EPA limit set
Main supplier: VERA WATER & POWER · 24,692 people · 2019
2/4 SYR4
Lead
0.0208 mg/L 139%
above the EPA limit of 0.0150 mg/L
Main supplier: VERA WATER & POWER · 24,692 people · 2025
4/4 LCR
PFOS
0.0055 µg/L
No EPA limit set
Highest in the city: EAST SPOKANE WATER DIST 1 · 4,285 people · 2025
1/4 UCMR-5
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 Spokane Valley

SupplierPopulation served
VERA WATER & POWER 24,692
EAST SPOKANE WATER DIST 1 4,285
HUTCHINSON IRRIGATION DIST #16 2,209
CARNHOPE IRRIGATION DISTRICT 7 1,602

Frequently asked questions about Spokane Valley tap water

Is Spokane Valley tap water safe to drink?

EPA testing detected 15 contaminants in the water serving Spokane Valley. 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 Spokane Valley?

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

What contaminants are in Spokane Valley's water?

The contaminants EPA monitoring detected in Spokane Valley include Nitrate, Nitrate-Nitrite, Barium, Chromium, Copper. 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.