Kenmore, WA water hardness

Tap water hardness
25mg/L
1.5gpg
Soft

Reported by Northshore Utility District · August 2025

WA typical
36 mg/L
EPA health violations since 2016
0
Data
Utility report

The water in Kenmore carries roughly 25 mg/L of dissolved calcium and magnesium, or 1.5 grains per gallon. That is soft water. The number comes from Northshore Utility District, dated August 2025.

Kenmore on the hardness scale, with nearby cities
060120180240300360+WA typical 36Brier: 13 mg/LBrier 13Bothell West: 13 mg/LBothell West 13Alderwood Manor: 13 mg/LAlderwood Manor 13Bothell East: 13 mg/LBothell East 13Mountlake Terrace: 14 mg/LMountlake Terrace 14Bothell: 19 mg/LBothell 19Woodinville: 25 mg/LWoodinville 25Lake Forest Park: 30 mg/LLake Forest Park 30Shoreline: 31 mg/LShoreline 31Kirkland: 34 mg/LKirkland 34Kenmore 25mg/L as calcium carbonate060120180240300360+WA 36Brier: 13 mg/LBrier 13Bothell West: 13 mg/LBothell We. 13Mountlake Terrace: 14 mg/LMountlake. 14Bothell: 19 mg/LBothell 19Lake Forest Park: 30 mg/LLake Fores. 30Kirkland: 34 mg/LKirkland 3425 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 25 mg/L, Kenmore is 11 mg/L below the typical Washington figure of 36. Of the 10 nearest cities we track, 6 have softer water and 3 have harder. The range nearby runs from 13 mg/L in Brier to 34 in Kirkland.

What 25 mg/L means at home

Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.

Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Nothing, as far as hardness goes. At 25 mg/L a softener would have almost nothing to remove.

Carbon filter

If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.

EPA record for Kenmore's water system

Northshore Utility District · PWSID WA5340800

No health-based violations since 2016

Serves about 99,789 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Kenmore water hard?

No. It measures about 25 mg/L (1.5 grains per gallon), which the USGS classes as soft.

What is the water hardness in Kenmore in grains per gallon?

About 1.5 gpg. One grain per gallon equals 17.1 mg/L, so 25 mg/L divided by 17.1 gives 1.5.

Has the Kenmore water system had EPA violations?

EPA records show no health-based violations for Northshore Utility District since 2016.

Nearby cities

All 145 cities in Washington

Hardness data: TapWaterData US Water Hardness (utility report, August 29, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.