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Tap water quality report

Ridgefield, WA

EPA monitoring detected 14 contaminants across the 1 water supplier serving Ridgefield. 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.

1
water supplier
21,225
people served
14
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Ridgefield'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
320 µg/L 3.2%
of the EPA limit 10000 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Fluoride
170 µg/L 4.3%
of the EPA limit 4000 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2017
1/1 SYR4
Barium
23.6 µg/L 1.2%
of the EPA limit 2000 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2017
1/1 SYR4
Total Haloacetic Acids (HAA5)
20.89 µg/L 35%
of the EPA limit 60 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Trichloroacetic Acid
14 µg/L
No EPA limit set
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Dichloroacetic Acid
6.89 µg/L
No EPA limit set
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Copper
5 µg/L 0.4%
of the EPA limit 1300 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2017
1/1 SYR4
Chromium
2.9 µg/L 2.9%
of the EPA limit 100 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2017
1/1 SYR4
TTHM
2.403 µg/L 3%
of the EPA limit 80 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2017
1/1 SYR4
Arsenic
1.95 µg/L 20%
of the EPA limit 10 µg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2017
1/1 SYR4
Chloroform
1.055 µg/L
No EPA limit set
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Bromodichloromethane
0.7800 µg/L
No EPA limit set
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Dibromochloromethane
0.6800 µg/L
No EPA limit set
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2019
1/1 SYR4
Lead
0.0021 mg/L 14%
of the EPA limit 0.0150 mg/L
Main supplier: RIDGEFIELD PUBLIC WORKS · 21,225 people · 2023
1/1 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 Ridgefield

SupplierPopulation served
RIDGEFIELD PUBLIC WORKS 21,225

Frequently asked questions about Ridgefield tap water

Is Ridgefield tap water safe to drink?

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

1 public water supplier report drinking-water monitoring for Ridgefield, Washington to the EPA. Each is listed above with its population served.

What contaminants are in Ridgefield's water?

The contaminants EPA monitoring detected in Ridgefield include Nitrate, Fluoride, Barium, Total Haloacetic Acids (HAA5), Trichloroacetic Acid. 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.