Snohomish, WA water hardness

Tap water hardness
36mg/L
2.1gpg
Soft

Reported by Sno PUD 1 - Lake Stevens · January 2025

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

The water in Snohomish carries roughly 36 mg/L of dissolved calcium and magnesium, or 2.1 grains per gallon. That is soft water. The number comes from Sno PUD 1 - Lake Stevens, dated January 2025.

Snohomish on the hardness scale, with nearby cities
060120180240300360+WA typical 36Mill Creek: 13 mg/LMill Creek 13Mill Creek East: 13 mg/LMill Creek East 13Lake Stickney: 13 mg/LLake Stickney 13Martha Lake: 13 mg/LMartha Lake 13Maltby: 16 mg/LMaltby 16Everett: 19 mg/LEverett 19Eastmont: 22 mg/LEastmont 22Monroe: 29 mg/LMonroe 29Lake Stevens: 36 mg/LLake Stevens 36Silver Firs: 43 mg/LSilver Firs 43Snohomish 36mg/L as calcium carbonate060120180240300360+WA 36Mill Creek: 13 mg/LMill Creek 13Everett: 19 mg/LEverett 19Eastmont: 22 mg/LEastmont 22Monroe: 29 mg/LMonroe 29Lake Stevens: 36 mg/LLake Steve. 36Silver Firs: 43 mg/LSilver Firs 4336 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 36 mg/L, Snohomish is close to the typical Washington figure of 36 mg/L. Of the 10 nearest cities we track, 8 have softer water and 1 has harder. The range nearby runs from 13 mg/L in Mill Creek to 43 in Silver Firs.

What 36 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 36 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 Snohomish's water system

Snohomish City of · PWSID WA5380915

No health-based violations since 2016

Serves about 16,367 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

EPA lists Snohomish City of as the system serving Snohomish. The hardness figure above comes from a different system's report, which TapWaterData uses for Snohomish.

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 Snohomish water hard?

No. It measures about 36 mg/L (2.1 grains per gallon), which the USGS classes as soft.

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

About 2.1 gpg. One grain per gallon equals 17.1 mg/L, so 36 mg/L divided by 17.1 gives 2.1.

Has the Snohomish water system had EPA violations?

EPA records show no health-based violations for Snohomish City of since 2016.

Nearby cities

All 145 cities in Washington

Hardness data: TapWaterData US Water Hardness (utility report, January 1, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.