Physical & aggregate · 2024
Turbidity in Seattle, WA tap water
Seattle, WA's 2024 Turbidity measurement is below the federal limit of 1 NTU (MCL).
The measurement
| Statistic | Value | Federal limit |
|---|---|---|
Average System-wide | 0.04 NTU | 1 NTU MCL |
Range System-wide | 0.02 NTU | 1 NTU MCL |
Verbatim from Seattle, WA's 2024 Consumer Confidence Report — source document ↗
About Turbidity
A measure of cloudiness from suspended particles in the water.
High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.
How Seattle, WA compares
1 of the 3 WA systems measuring Turbidity on The Water Map have it at or above the federal limit:
Nearby systems also reporting Turbidity:
People also ask
+Is there Turbidity in Seattle, WA tap water?
Yes — Seattle, WA's 2024 Consumer Confidence Report lists Turbidity at 0.04 NTU. Seattle, WA's 2024 Turbidity measurement is below the federal limit of 1 NTU (MCL).
+What's the federal limit for Turbidity in drinking water?
The federal MCL for Turbidity is 1 NTU. The EPA enforces this against the regulated reporting statistic (running annual average or 90th percentile), not a single-sample spike.
+What is Turbidity?
A measure of cloudiness from suspended particles in the water. High turbidity can shelter microbes from disinfection; the EPA enforces it through a treatment-technique standard.
+Which other U.S. cities have Turbidity over the federal limit?
1 of the 3 WA systems on The Water Map measuring Turbidity report it at or above the federal limit. Examples include Kent, WA.
+Where does this Turbidity measurement come from?
This page reproduces the Turbidity entry from the 2024 Consumer Confidence Report published by the Seattle, WA water utility — the annual drinking-water report every U.S. utility is required by federal law to publish. The original source document is archived at /water/wa/seattle/2024/source.