Hard water in Ephrata, WA

Tap water hardness

230mg/L

13.5gpg

Very hard

Calculated from the utility's calcium and magnesium results · August 2022

WA typical: 36 mg/L
EPA health violations since 2016: 0
Softener for 3 people: 24k grain
Data: Calculated from utility data

The water in Ephrata carries roughly 230 mg/L of dissolved calcium and magnesium, or 13.5 grains per gallon. That is very hard water. TapWaterData worked it out from the calcium and magnesium levels the local utility reports (August 2022).

Ephrata on the hardness scale, with nearby cities

Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 230 mg/L, Ephrata is 194 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 31 mg/L in Union Gap to 168 in Moses Lake.

What 230 mg/L means at home

Scale forms fast here. Kettles and coffee makers need regular descaling, and showerheads clog unless you clean them.

Tank water heaters collect mineral sediment that insulates the water from the burner, so flushing the tank matters more than usual.

Dishes and glass shower doors spot easily. Soap scum and a dull film on hair or laundry are common complaints.

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

At 230 mg/L most of the trouble is scale, and only a few things deal with it.

Ion-exchange water softener

The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.

Salt-free conditioner

No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.

Reverse osmosis or carbon filter

Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.

Softener size for Ephrata

3 people × 75 gallons a day × 13.5 gpg = 3,031 grains a day. A 24,000-grain unit regenerates about every 7 days.

Size it for your household

EPA record for Ephrata's water system

Ephrata Water Department · PWSID WA5323650

No health-based violations since 2016

Serves about 8,718 people from groundwater.

Health-based: 0
Monitoring or reporting: 14
Open now: 0

EPA lists this system as serving Ephrata.

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 Ephrata water hard?

Yes. It measures about 230 mg/L (13.5 grains per gallon), which the USGS classes as very hard.

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

About 13.5 gpg. One grain per gallon equals 17.1 mg/L, so 230 mg/L divided by 17.1 gives 13.5.

What size water softener do I need in Ephrata?

For 3 people using 75 gallons each per day, 13.5 gpg works out to about 3,031 grains a day. A 24,000-grain softener covers that with a regeneration about every 7 days.

Has the Ephrata water system had EPA violations?

EPA records show no health-based violations for Ephrata Water Department since 2016. There were also 14 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 (calculated from utility data, August 24, 2022), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.