How hard is the water in Tanglewilde, WA?
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
Tap water in Tanglewilde has about 83 mg/L of hardness, which is 4.8 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Lacey Water Department, dated September 2025. Reports for this system disagree, with values from 41 to 83 mg/L.
At 83 mg/L, Tanglewilde is 47 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 22 mg/L in University Place to 110 in Lacey.
What 83 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.
3 people × 75 gallons a day × 4.8 gpg = 1,091 grains a day. A 24,000-grain unit regenerates about every 21 days.
EPA record for Tanglewilde's water system
No health-based violations since 2016
Serves about 105,178 people from groundwater.
- Health-based
- 0
- Monitoring or reporting
- 4
- Open now
- 0
TapWaterData ties Tanglewilde to this system. EPA's service-area records do not name Tanglewilde, 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 Tanglewilde water hard?
Somewhat. It measures about 83 mg/L (4.8 grains per gallon), which the USGS classes as moderately hard.
What is the water hardness in Tanglewilde in grains per gallon?
About 4.8 gpg. One grain per gallon equals 17.1 mg/L, so 83 mg/L divided by 17.1 gives 4.8.
What size water softener do I need in Tanglewilde?
For 3 people using 75 gallons each per day, 4.8 gpg works out to about 1,091 grains a day. A 24,000-grain softener covers that with a regeneration about every 21 days.
Has the Tanglewilde 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
- Lacey110 mg/LModerately hard
- Olympia52 mg/LSoft
- Tumwater60 mg/LModerately hard
- Steilacoom72 mg/LModerately hard
- Lakewood72 mg/LModerately hard
- University Place22 mg/LSoft
- Spanaway39 mg/LSoft
- Parkland22 mg/LSoft
- Fircrest22 mg/LSoft
- Wollochet46 mg/LSoft
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.