Where does the water in 97051 come from?

Water for zip code 97051 in Saint Helens, Oregon is provided by 6 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 97051

Q: Is the water hard in Saint Helens, OR (97051)?

The average water hardness in 97051 is 37 PPM (2.2 GPG), which is classified as soft. No water treatment is typically needed.

Q: Do I need a water softener in 97051?

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

Saint Helens, Oregon · Columbia County

37 PPM

2.2 GPG

Soft

0Soft60120180300+

Estimated — Nearby Data

Dataset updated March 9, 2026Matched to 6 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 6 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

6 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 97051

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.

6 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
St Helens, City Of OR4100724	surface water	19 PPM Soft	13,410	Estimated — Nearby Data
Mcnulty Water Pud OR4100725	groundwater	87 PPM Slightly Hard	2,500	Estimated — Nearby Data
Warren Water Association OR4100726	groundwater	87 PPM Slightly Hard	2,050	Estimated — Nearby Data
Deer Island Waterworks OR4101233	groundwater	87 PPM Slightly Hard	90	Estimated — Nearby Data
Deer Island Heights Ws OR4105114	groundwater	87 PPM Slightly Hard	60	Estimated — Nearby Data

St Helens, City Of

OR4100724

Soft

19 PPMsurface water13,410 servedEstimated — Nearby Data

Mcnulty Water Pud

OR4100725

Slightly Hard

87 PPMgroundwater2,500 servedEstimated — Nearby Data

Warren Water Association

OR4100726

Slightly Hard

87 PPMgroundwater2,050 servedEstimated — Nearby Data

Deer Island Waterworks

OR4101233

Slightly Hard

87 PPMgroundwater90 servedEstimated — Nearby Data

Deer Island Heights Ws

OR4105114

Slightly Hard

87 PPMgroundwater60 servedEstimated — Nearby Data

Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

9705319 9705419 9701824 9705619 9704826 9864296 9867466 9713312 9723112 9862996 9706419 9868596

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 Saint Helens, OR (97051).

Submit Your Data

Frequently Asked Questions

Is the water hard in Saint Helens, OR (97051)?

Our estimate for 97051 is 37 PPM (2.2 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 97051?

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

Is hard water in 97051 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 97051?

Zip code 97051 in Saint Helens, Oregon is served by 6 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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