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Water Hardness in Maxwell, CA

California · 1 zip codes · 1 matched water system

198 PPM
11.6 GPG
Hard
0Soft60120180300+
Verified — State Lab Tested

City avg (weighted): 198 PPM

Dataset updated March 9, 20261 matched water system in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Maxwell Public Utility District
CA0610003
Water source: groundwater
Source year: 2023
Serves: 1,175
USGS environmental estimate: 282 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 1 matched water system 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
1 matched system 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 2023
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 Maxwell

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

1 water system
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.
Maxwell Public Utility District
CA0610003
Hard
198 PPMgroundwater1,175 servedVerified — State Lab Tested
Source water: 282 PPM

Zip Codes in Maxwell, 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 Maxwell, CA.

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Frequently Asked Questions

How hard is the water in Maxwell, CA?

The citywide weighted average water hardness in Maxwell, CA is 198 PPM (11.6 GPG), classified as hard. This is based on 1 matched water system.

Do I need a water softener in Maxwell, CA?

With a citywide average hardness of 198 PPM, a water softener is recommended for homes in Maxwell. Confirm your tap reading before sizing equipment.

Is hard water in Maxwell, 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 Maxwell, CA?

Maxwell, California is served by 1 matched water system across 1 zip code.

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