Union Hill-Novelty Hill, WA water hardness

Tap water hardness
50mg/L
2.9gpg
Soft

Reported by Redmond Water System City of · September 2025

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

The water in Union Hill-Novelty Hill carries roughly 50 mg/L of dissolved calcium and magnesium, or 2.9 grains per gallon. That is soft water. The number comes from Redmond Water System City of, dated September 2025.

Union Hill-Novelty Hill on the hardness scale, with nearby cities
060120180240300360+WA typical 36Maltby: 16 mg/LMaltby 16Bothell: 19 mg/LBothell 19Duvall: 21 mg/LDuvall 21Cottage Lake: 25 mg/LCottage Lake 25Woodinville: 25 mg/LWoodinville 25Kirkland: 34 mg/LKirkland 34Bellevue: 34 mg/LBellevue 34Redmond: 39 mg/LRedmond 39Issaquah: 41 mg/LIssaquah 41Sammamish: 62 mg/LSammamish 62Union Hill-Novelty Hill 50mg/L as calcium carbonate060120180240300360+WA 36Duvall: 21 mg/LDuvall 21Cottage Lake: 25 mg/LCottage La. 25Woodinville: 25 mg/LWoodinville 25Kirkland: 34 mg/LKirkland 34Redmond: 39 mg/LRedmond 39Sammamish: 62 mg/LSammamish 6250 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 50 mg/L, Union Hill-Novelty Hill is 14 mg/L above the typical Washington figure of 36. Of the 10 nearest cities we track, 9 have softer water and 1 has harder. The range nearby runs from 16 mg/L in Maltby to 62 in Sammamish.

What 50 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 50 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 Union Hill-Novelty Hill's water system

Redmond Water System City of · PWSID WA5371650

No health-based violations since 2016

Serves about 163,335 people from surface water.

Health-based
0
Monitoring or reporting
0
Open now
0

TapWaterData ties Union Hill-Novelty Hill to this system. EPA's service-area records do not name Union Hill-Novelty Hill, so check the utility printed on your water bill.

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 Union Hill-Novelty Hill water hard?

No. It measures about 50 mg/L (2.9 grains per gallon), which the USGS classes as soft.

What is the water hardness in Union Hill-Novelty Hill in grains per gallon?

About 2.9 gpg. One grain per gallon equals 17.1 mg/L, so 50 mg/L divided by 17.1 gives 2.9.

Has the Union Hill-Novelty Hill water system had EPA violations?

EPA records show no health-based violations for Redmond Water System City of since 2016.

Nearby cities

All 145 cities in Washington

Hardness data: TapWaterData US Water Hardness (utility report, September 16, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.