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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 highest level found 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 highest level seen across the city's suppliers, the EPA limit for each, and where the figure comes from.

ContaminantLevel vs EPA limitSuppliersSource
Nitrate
3230 µg/L 32%
of the EPA limit 10000 µg/L
 4/4 SYR4
Nitrate-Nitrite
2650 µg/L 27%
of the EPA limit 10000 µg/L
 4/4 SYR4
Barium
76.8 µg/L 3.8%
of the EPA limit 2000 µg/L
 4/4 SYR4
Chromium
16 µg/L 16%
of the EPA limit 100 µg/L
 3/4 SYR4
Copper
11.5 µg/L 0.9%
of the EPA limit 1300 µg/L
 4/4 SYR4
TTHM
7.83 µg/L 9.8%
of the EPA limit 80 µg/L
 2/4 SYR4
Arsenic
5.3 µg/L 53%
of the EPA limit 10 µg/L
 3/4 SYR4
Gross Beta Particle Activity
4 pCi/L
No EPA limit set
 1/4 SYR4
Dibromochloromethane
3.17 µg/L
No EPA limit set
 1/4 SYR4
Bromoform
2.3 µg/L
No EPA limit set
 1/4 SYR4
Bromodichloromethane
2.1 µg/L
No EPA limit set
 1/4 SYR4
Chloroform
1.39 µg/L
No EPA limit set
 2/4 SYR4
Lead
1.38 µg/L 9.2%
of the EPA limit 15 µg/L
 1/4 SYR4
Lead
0.0208 mg/L 139%
above the EPA limit of 0.0150 mg/L
 4/4 LCR
PFOS
0.0055 µg/L
No EPA limit set
 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 single worst sample on record — 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 highest level found 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.