Water Hardness in Grand Ronde, OR

Q: Do I need a water softener in Grand Ronde, OR?

At a citywide weighted average of 30 PPM, Grand Ronde has relatively soft water. A water softener is generally not necessary.

Q: How many water systems serve Grand Ronde, OR?

Grand Ronde, Oregon has 5 matched water systems across 1 zip code.

Oregon · 1 zip codes · 5 matched water systems

30 PPM

1.8 GPG

Soft

0Soft60120180300+

Verified — Annual Water Quality Report

City avg (weighted): 30 PPM

Dataset updated March 9, 20265 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading

Dallas, City Of

OR4100248

Water source: surface water

Serves: 17,911

USGS environmental estimate: 32 PPM

Source context

How this city reading is built

This city reading is a weighted rollup across 5 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis

3 verified treated-water sources

5 matched systems total for this city; treated-water reports are prioritized when available.

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 in Grand Ronde

These systems are matched to Grand Ronde, OR. Citywide readings are useful for comparison, but the system serving a specific address may differ from the city average.

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
Dallas, City Of OR4100248	surface water	30 PPM Soft USGS estimate: 32 PPM	17,911	Verified — Annual Water Quality Report
Monmouth, City Of OR4100537	surface water	30 PPM Soft USGS estimate: 21 PPM	11,651	Verified — Annual Water Quality Report
Independence Water System OR4100399	groundwater	30 PPM Soft USGS estimate: 21 PPM	10,300	Verified — Annual Water Quality Report
Grand Ronde Community Wtr Assn OR4100338	groundwater	21 PPM Soft	2,500	Estimated — Nearby Data
Rock Creek Water District OR4100337	surface water	31 PPM Soft	300	Estimated — Nearby Data

Dallas, City Of

OR4100248

Soft

30 PPMsurface water17,911 servedVerified — Annual Water Quality Report

Source water: 32 PPM

Monmouth, City Of

OR4100537

Soft

30 PPMsurface water11,651 servedVerified — Annual Water Quality Report

Source water: 21 PPM

Independence Water System

OR4100399

Soft

30 PPMgroundwater10,300 servedVerified — Annual Water Quality Report

Source water: 21 PPM

Grand Ronde Community Wtr Assn

OR4100338

Soft

21 PPMgroundwater2,500 servedEstimated — Nearby Data

Rock Creek Water District

OR4100337

Soft

31 PPMsurface water300 servedEstimated — Nearby Data

Zip Codes in Grand Ronde, OR

9734730

What This Means For You

Recommendations are based on the displayed 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 Grand Ronde, OR.

Submit Your Data

Frequently Asked Questions

How hard is the water in Grand Ronde, OR?

The citywide weighted average water hardness in Grand Ronde, OR is 30 PPM (1.7 GPG), classified as soft. This is based on 5 matched water systems. The gauge highlights Dallas, City Of, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Grand Ronde, OR?

At 30 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Grand Ronde, OR 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 Grand Ronde, OR?

Grand Ronde, Oregon is served by 5 matched water systems across 1 zip code.

Learn More About Your Water

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