Where does the water in 98648 come from?

Water for zip code 98648 in Stevenson, Washington is provided by 4 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 98648

Q: Is the water hard in Stevenson, WA (98648)?

The average water hardness in 98648 is 37 PPM (2.1 GPG), which is classified as soft. No water treatment is typically needed.

Q: Do I need a water softener in 98648?

At 37 PPM, your water is relatively soft. A water softener is generally not necessary, though some homeowners prefer the feel of softened water.

Stevenson, Washington · Skamania County

37 PPM

2.1 GPG

Soft

0Soft60120180300+

Estimated — Nearby Data

Dataset updated March 9, 2026Matched to 4 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 4 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis

4 estimated sources

This ZIP reading needs local confirmation before equipment sizing or purchase decisions.

Water source profile

Primarily surface water

Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.

Data recency

March 9, 2026

Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 98648

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

4 water systems

PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.

Water System	Source	Hardness	Pop. Served	Data Source
Stevenson Water Dept WA5384250	surface water	19 PPM Soft	2,594	Estimated — Nearby Data
Home Valley Water District WA5309188	groundwater	113 PPM Slightly Hard	500	Estimated — Nearby Data
Maple Hill Water Services WA5384300	groundwater	113 PPM Slightly Hard	62	Estimated — Nearby Data
Johnston, James W WA5319001	groundwater	113 PPM Slightly Hard	28	Estimated — Nearby Data

Stevenson Water Dept

WA5384250

Soft

19 PPMsurface water2,594 servedEstimated — Nearby Data

Home Valley Water District

WA5309188

Slightly Hard

113 PPMgroundwater500 servedEstimated — Nearby Data

Maple Hill Water Services

WA5384300

Slightly Hard

113 PPMgroundwater62 servedEstimated — Nearby Data

Johnston, James W

WA5319001

Slightly Hard

113 PPMgroundwater28 servedEstimated — Nearby Data

Nearby Zip Codes

98639113 9861043 9701486 9860534 9867196 9865187 9703186 9701912 9701112 9867596 9860796 9704912

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft water!

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Stevenson, WA (98648).

Submit Your Data

Frequently Asked Questions

Is the water hard in Stevenson, WA (98648)?

Our estimate for 98648 is 37 PPM (2.1 GPG), but it is based on nearby, county, or state-level data rather than a direct treated tap-water report for this exact location. Confirm with your utility or a home test.

Do I need a water softener in 98648?

Do not size a softener from this estimate alone. Confirm the actual tap-water hardness before choosing treatment equipment.

Is hard water in 98648 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 98648?

Zip code 98648 in Stevenson, Washington is served by 4 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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