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Tap water quality report

Grandview, WA

EPA monitoring detected 12 contaminants across the 2 water suppliers serving Grandview. 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
252
people served
12
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Grandview'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
5110 µg/L 51%
of the EPA limit 10000 µg/L
Main supplier: WYCKOFF FARMS · 131 people · 2019
2/2 SYR4
Nitrate-Nitrite
1380 µg/L 14%
of the EPA limit 10000 µg/L
Main supplier: WYCKOFF FARMS · 131 people · 2019
Highest in the city: 3589 µg/L — Wilgus Housing Water System · 121 people · 2019
2/2 SYR4
Fluoride
662 µg/L 17%
of the EPA limit 4000 µg/L
Main supplier: WYCKOFF FARMS · 131 people · 2019
2/2 SYR4
Barium
31.8 µg/L 1.6%
of the EPA limit 2000 µg/L
Highest in the city: Wilgus Housing Water System · 121 people · 2019
1/2 SYR4
Copper
12.2 µg/L 0.9%
of the EPA limit 1300 µg/L
Highest in the city: Wilgus Housing Water System · 121 people · 2019
1/2 SYR4
Arsenic
4.3 µg/L 43%
of the EPA limit 10 µg/L
Main supplier: WYCKOFF FARMS · 131 people · 2016
2/2 SYR4
Chromium
3.5 µg/L 3.5%
of the EPA limit 100 µg/L
Main supplier: WYCKOFF FARMS · 131 people · 2019
2/2 SYR4
P-Dichlorobenzene
2.0759 µg/L 2.8%
of the EPA limit 75 µg/L
Highest in the city: Wilgus Housing Water System · 121 people · 2019
1/2 SYR4
Chloroform
1.24693 µg/L
No EPA limit set
Highest in the city: Wilgus Housing Water System · 121 people · 2019
1/2 SYR4
TTHM
1.24693 µg/L 1.6%
of the EPA limit 80 µg/L
Highest in the city: Wilgus Housing Water System · 121 people · 2019
1/2 SYR4
1,2-Dichloropropane
1.2 µg/L 24%
of the EPA limit 5 µg/L
Highest in the city: Wilgus Housing Water System · 121 people · 2019
1/2 SYR4
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
Main supplier: WYCKOFF FARMS · 131 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 Grandview

SupplierPopulation served
WYCKOFF FARMS 131
Wilgus Housing Water System 121

Frequently asked questions about Grandview tap water

Is Grandview tap water safe to drink?

EPA testing detected 12 contaminants in the water serving Grandview. 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 Grandview?

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

What contaminants are in Grandview's water?

The contaminants EPA monitoring detected in Grandview include Nitrate, Nitrate-Nitrite, Fluoride, Barium, 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.