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Water Hardness in Coquille, OR

Oregon · 1 zip codes · 6 matched water systems

100 PPM
5.9 GPG
Slightly Hard
0Soft60120180300+
Estimated — Nearby Data

Dataset updated March 9, 20266 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 6 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
6 estimated sources
This city 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 in Coquille

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

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.
Coos Bay North Bend Wtr Brd
OR4100205
Slightly Hard
112 PPMsurface water34,500 servedEstimated — Nearby Data
Coquille, City Of
OR4100213
Soft
18 PPMsurface water3,953 servedEstimated — Nearby Data
Shelley Road-Crest Acres Wd
OR4101401
Soft
18 PPMsurface water430 servedEstimated — Nearby Data
Rink Creek Water District
OR4101402
Soft
18 PPMsurface water285 servedEstimated — Nearby Data
Garden Valley Water Association
OR4100214
Soft
18 PPMsurface water84 servedEstimated — Nearby Data
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Coquille, OR

What This Means For You

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

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Coquille, OR.

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Frequently Asked Questions

How hard is the water in Coquille, OR?

The citywide weighted average water hardness in Coquille, OR is 100 PPM (5.9 GPG), classified as slightly hard. This is based on 6 matched water systems.

Do I need a water softener in Coquille, OR?

At 100 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Coquille, 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 Coquille, OR?

Coquille, Oregon is served by 6 matched water systems across 1 zip code.

Learn More About Your Water