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Tap water quality report

Burien, WA

EPA monitoring detected 10 contaminants across the 1 water supplier serving Burien. 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
23,492
people served
10
contaminants found
Washington rankings Lead in Washington PFAS in Washington

What was found in Burien'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
TTHM
46.643 µg/L 58%
of the EPA limit 80 µg/L
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Chloroform
43.07 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Total Haloacetic Acids (HAA5)
39.0525 µg/L 65%
of the EPA limit 60 µg/L
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Trichloroacetic Acid
24.25 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Dichloroacetic Acid
16.41 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Dibromochloromethane
4.72 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Bromodichloromethane
4.531 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Monochloroacetic Acid
2.834 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Bromoform
1.3845 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
Dibromoacetic Acid
1.3285 µg/L
No EPA limit set
Main supplier: KING COUNTY WATER DISTRICT #49 · 23,492 people · 2019
1/1 SYR4
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 Burien

SupplierPopulation served
KING COUNTY WATER DISTRICT #49 23,492

Frequently asked questions about Burien tap water

Is Burien tap water safe to drink?

EPA testing detected 10 contaminants in the water serving Burien. 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 Burien?

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

What contaminants are in Burien's water?

The contaminants EPA monitoring detected in Burien include TTHM, Chloroform, Total Haloacetic Acids (HAA5), Trichloroacetic Acid, Dichloroacetic 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.