How hard is the water in Lacey, WA?

Tap water hardness
110mg/L
6.4gpg
Moderately hard

Reported by Lacey Water Department · September 2025

WA typical
36 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

The water in Lacey carries roughly 110 mg/L of dissolved calcium and magnesium, or 6.4 grains per gallon. That is moderately hard water. The number comes from Lacey Water Department, dated September 2025.

Lacey on the hardness scale, with nearby cities
060120180240300360+WA typical 36University Place: 22 mg/LUniversity Place 22Parkland: 22 mg/LParkland 22Fircrest: 22 mg/LFircrest 22Spanaway: 39 mg/LSpanaway 39Wollochet: 46 mg/LWollochet 46Olympia: 52 mg/LOlympia 52Tumwater: 60 mg/LTumwater 60Steilacoom: 72 mg/LSteilacoom 72Lakewood: 72 mg/LLakewood 72Tanglewilde: 83 mg/LTanglewilde 83Lacey 110mg/L as calcium carbonate060120180240300360+WA 36University Place: 22 mg/LUniversity. 22Olympia: 52 mg/LOlympia 52Tumwater: 60 mg/LTumwater 60Steilacoom: 72 mg/LSteilacoom 72Lakewood: 72 mg/LLakewood 72Tanglewilde: 83 mg/LTanglewilde 83110 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 110 mg/L, Lacey is 74 mg/L above the typical Washington figure of 36. None of the 10 nearest cities we track has harder water. The range nearby runs from 22 mg/L in University Place to 83 in Tanglewilde.

What 110 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

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

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Lacey

3 people × 75 gallons a day × 6.4 gpg = 1,447 grains a day. A 24,000-grain unit regenerates about every 16 days.

Size it for your household

EPA record for Lacey's water system

Lacey Water Department · PWSID WA5343500

No health-based violations since 2016

Serves about 105,178 people from groundwater.

Health-based
0
Monitoring or reporting
4
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 Lacey water hard?

Somewhat. It measures about 110 mg/L (6.4 grains per gallon), which the USGS classes as moderately hard.

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

About 6.4 gpg. One grain per gallon equals 17.1 mg/L, so 110 mg/L divided by 17.1 gives 6.4.

What size water softener do I need in Lacey?

For 3 people using 75 gallons each per day, 6.4 gpg works out to about 1,447 grains a day. A 24,000-grain softener covers that with a regeneration about every 16 days.

Has the Lacey water system had EPA violations?

EPA records show no health-based violations for Lacey Water Department since 2016. There were also 4 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 145 cities in Washington

Hardness data: TapWaterData US Water Hardness (utility report, September 23, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.