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Water Hardness in Oregon House, CA

California · 1 zip codes · 5 matched water systems

245 PPM
14.3 GPG
Hard
0Soft60120180300+
Verified — State Lab Tested

City avg (weighted): 194 PPM

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

System used for this reading
Cal-Water Service Co.-Marysville
CA5810001
Water source: groundwater
Source year: 2024
Serves: 12,419
USGS environmental estimate: 250 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
1 verified treated-water source
5 matched systems total for this city; treated-water reports are prioritized when available.
Water source profile
Primarily groundwater
Groundwater commonly picks up calcium and magnesium after contact with rock and soil. This profile is weighted by known population served across matched systems.
Data recency
Report years 2024
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 Oregon House

These systems are matched to Oregon House, CA. 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.
Linda County Water District
CA5810002
Moderately Hard
150 PPMgroundwater21,654 servedHigh Confidence — USGS Monitoring
Olivehurst Public U.D.
CA5810003
Hard
206 PPMgroundwater16,595 servedHigh Confidence — USGS Monitoring
Cal-Water Service Co.-Marysville
CA5810001
Hard
245 PPMgroundwater12,419 servedVerified — State Lab Tested
Source water: 250 PPM
Plumas Lake
CA5805001
Hard
206 PPMgroundwater10,464 servedHigh Confidence — USGS Monitoring
Fellowship Of Friends
CA5800863
Hard
182 PPMgroundwater160 servedHigh Confidence — USGS Monitoring

Zip Codes in Oregon House, CA

What This Means For You

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

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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Oregon House, CA.

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Frequently Asked Questions

How hard is the water in Oregon House, CA?

The citywide weighted average water hardness in Oregon House, CA is 194 PPM (11.3 GPG), classified as hard. This is based on 5 matched water systems. The gauge highlights Cal-Water Service Co.-Marysville, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Oregon House, CA?

With a citywide average hardness of 194 PPM, a water softener is recommended for homes in Oregon House. Confirm your tap reading before sizing equipment.

Is hard water in Oregon House, CA 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 Oregon House, CA?

Oregon House, California is served by 5 matched water systems across 1 zip code.

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