WH

Water Hardness in Jackson, CA

California · 1 zip codes · 3 matched water systems

14 PPM
0.8 GPG
Soft
0Soft60120180300+
Verified — State Lab Tested

City avg (weighted): 106 PPM

Dataset updated March 9, 20263 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Christian Valley Park Csd
CA3110034
Water source: surface water
Source year: 2025
Serves: 1,800
USGS environmental estimate: 135 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 3 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
3 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
Report years 2025
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 Jackson

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

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.
Awa, Ione
CA0310002
Slightly Hard
108 PPMsurface water7,227 servedHigh Confidence — USGS Monitoring
City Of Jackson
CA0310001
Moderately Hard
135 PPMsurface water5,019 servedHigh Confidence — USGS Monitoring
Christian Valley Park Csd
CA3110034
Soft
14 PPMsurface water1,800 servedVerified — State Lab Tested
Source water: 135 PPM

Zip Codes in Jackson, CA

95642106

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 Jackson, CA.

Submit Your Data

Frequently Asked Questions

How hard is the water in Jackson, CA?

The citywide weighted average water hardness in Jackson, CA is 106 PPM (6.2 GPG), classified as slightly hard. This is based on 3 matched water systems. The gauge highlights Christian Valley Park Csd, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Jackson, CA?

At 106 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Jackson, 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 Jackson, CA?

Jackson, California is served by 3 matched water systems across 1 zip code.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

10 min read

How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

8 min read