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Tap water quality report

Pullman, WA

EPA monitoring detected 14 contaminants across the 2 water suppliers serving Pullman. 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
52,821
people served
14
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Pullman'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
931.75 µg/L 23%
of the EPA limit 4000 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
2/2 SYR4
Nitrate-Nitrite
198 µg/L 2%
of the EPA limit 10000 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Barium
94.55 µg/L 4.7%
of the EPA limit 2000 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
Highest in the city: 108.955 µg/L — WASHINGTON STATE UNIVERSITY · 21,506 people · 2018
2/2 SYR4
Copper
21.365 µg/L 1.6%
of the EPA limit 1300 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
2/2 SYR4
Lithium
13.6 µg/L
No EPA limit set
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2023
Highest in the city: 16.6 µg/L — WASHINGTON STATE UNIVERSITY · 21,506 people · 2025
2/2 UCMR-5
TTHM
6.0655 µg/L 7.6%
of the EPA limit 80 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
2/2 SYR4
Lead
2.26 µg/L 15%
of the EPA limit 15 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Dibromochloromethane
2.258 µg/L
No EPA limit set
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Selenium
1.6 µg/L 3.2%
of the EPA limit 50 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Bromoform
1.574 µg/L
No EPA limit set
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Bromodichloromethane
1.513 µg/L
No EPA limit set
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Chloroform
1.3395 µg/L
No EPA limit set
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
2/2 SYR4
Chromium
1.237 µg/L 1.2%
of the EPA limit 100 µg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2019
1/2 SYR4
Lead
0.0021 mg/L 14%
of the EPA limit 0.0150 mg/L
Main supplier: PULLMAN WATER DEPARTMENT CITY OF · 31,315 people · 2023
Highest in the city: 0.0049 mg/L — WASHINGTON STATE UNIVERSITY · 21,506 people · 2024
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 Pullman

SupplierPopulation served
PULLMAN WATER DEPARTMENT CITY OF 31,315
WASHINGTON STATE UNIVERSITY 21,506

Frequently asked questions about Pullman tap water

Is Pullman tap water safe to drink?

EPA testing detected 14 contaminants in the water serving Pullman. 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 Pullman?

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

What contaminants are in Pullman's water?

The contaminants EPA monitoring detected in Pullman include Fluoride, Nitrate-Nitrite, Barium, Copper, Lithium. 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.