Where does the water in 97378 come from?

Water for zip code 97378 in Sheridan, Oregon is provided by 5 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 97378

Sheridan, Oregon · Yamhill County

55 PPM

3.2 GPG

Soft

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 5 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 5 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

1 USGS-backed source

5 matched systems total for this ZIP; USGS monitoring is used where treated-water reports are unavailable.

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 97378

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.

5 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
Mcminnville Water & Light OR4100497	surface water	31 PPM Soft	34,515	Estimated — Nearby Data
Newberg, City Of OR4100557	groundwater	97 PPM Slightly Hard	25,138	High Confidence — USGS Monitoring
Sheridan, City Of OR4100811	surface water	31 PPM Soft	6,494	Estimated — Nearby Data
Buell-Red Prairie Wd OR4101174	surface water	31 PPM Soft	800	Estimated — Nearby Data
Delphian School OR4100812	groundwater	21 PPM Soft	350	Estimated — Nearby Data

Mcminnville Water & Light

OR4100497

Soft

31 PPMsurface water34,515 servedEstimated — Nearby Data

Newberg, City Of

OR4100557

Slightly Hard

97 PPMgroundwater25,138 servedHigh Confidence — USGS Monitoring

Sheridan, City Of

OR4100811

Soft

31 PPMsurface water6,494 servedEstimated — Nearby Data

Buell-Red Prairie Wd

OR4101174

Soft

31 PPMsurface water800 servedEstimated — Nearby Data

Delphian School

OR4100812

Soft

21 PPMgroundwater350 servedEstimated — Nearby Data

Nearby Zip Codes

9739657 9710156 9733830 9712858 9734730 9737130 9734431 9730430 9711160 9710831 9711460 9712761

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 Sheridan, OR (97378).

Submit Your Data

Frequently Asked Questions

Is the water hard in Sheridan, OR (97378)?

The average water hardness in 97378 is 55 PPM (3.2 GPG), which is classified as soft.

Do I need a water softener in 97378?

At 55 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 97378 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 97378?

Zip code 97378 in Sheridan, Oregon is served by 5 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.

10 min read

How to Test Water Hardness at Home

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

8 min read