Where does the water in 97810 come from?

Water for zip code 97810 in Adams, Oregon is provided by 3 water systems. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 97810

Adams, Oregon · Umatilla County

132 PPM

7.7 GPG

Moderately Hard

0Soft60120180300+

High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 3 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 3 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

3 USGS-backed sources

3 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 97810

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.

3 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
Hermiston, City Of OR4100372	surface water	176 PPM Moderately Hard	20,000	High Confidence — USGS Monitoring
Pendleton, City Of OR4100613	surface water	80 PPM Slightly Hard	16,996	High Confidence — USGS Monitoring
Adams Water Dept, City Of OR4100001	groundwater	83 PPM Slightly Hard	400	High Confidence — USGS Monitoring

Hermiston, City Of

OR4100372

Moderately Hard

176 PPMsurface water20,000 servedHigh Confidence — USGS Monitoring

Pendleton, City Of

OR4100613

Slightly Hard

80 PPMsurface water16,996 servedHigh Confidence — USGS Monitoring

Adams Water Dept, City Of

OR4100001

Slightly Hard

83 PPMgroundwater400 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

97859132 97886130 97813130 97862124 9787641 97801131 97835132 9784141 97868132

What This Means For You

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

Moderately Hard Water

Your water is moderately hard. You're likely seeing scale buildup on fixtures, spotty dishes, and may notice dry skin or hair. A water softener or conditioner can help.

Recommended Products

Water Hardness Test Kit

Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Salt-Based Water Softener

Our PickAFWFilters Fleck 5600SXT 48K Also GreatWhirlpool WHES40E 40K Also GreatAFWFilters 64K Grain Also GreatAFWFilters Iron Pro 2 64K Also GreatSpringWell Filter + Softener Combo

Shower Head Filter

Our PickWeddell Duo Also GreatAquaBliss SF100 Also GreatSprite Pure 7-Setting Also GreatAqua Earth 20-Stage

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | How to Test Your 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 Adams, OR (97810).

Submit Your Data

Frequently Asked Questions

Is the water hard in Adams, OR (97810)?

The average water hardness in 97810 is 132 PPM (7.7 GPG), which is classified as moderately hard.

Do I need a water softener in 97810?

With hardness of 132 PPM, a water softener is worth considering for homes in 97810.

Is hard water in 97810 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 97810?

Zip code 97810 in Adams, Oregon is served by 3 water systems.