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Water Hardness in 96097

Yreka, California · Siskiyou County

204 PPM
11.9 GPG
Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 2026Matched to 4 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 4 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
4 USGS-backed sources
4 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 96097

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.

4 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.
Yreka, City Of
CA4710011
Hard
204 PPMsurface water7,825 servedHigh Confidence — USGS Monitoring
Siskiyou Co. Rolling Hills Mwc
CA4700528
Hard
204 PPMgroundwater300 servedHigh Confidence — USGS Monitoring
Shasta View Heights Owners Association
CA4700630
Hard
204 PPMgroundwater48 servedHigh Confidence — USGS Monitoring
Oak Valley Acres P.O.A.
CA4700638
Hard
204 PPMgroundwater41 servedHigh Confidence — USGS Monitoring

Nearby Zip Codes

What This Means For You

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

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 Yreka, CA (96097).

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Frequently Asked Questions

Is the water hard in Yreka, CA (96097)?

The average water hardness in 96097 is 204 PPM (11.9 GPG), which is classified as hard.

Do I need a water softener in 96097?

With hardness of 204 PPM, a water softener is recommended for homes in 96097.

Is hard water in 96097 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 96097?

Zip code 96097 in Yreka, California is served by 4 water systems.

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