Where does the water in 95955 come from?

Water for zip code 95955 in Maxwell, California is provided by 1 water system. Contact your local utility for specific source information, or check our detailed page for your area.

Water Hardness in 95955

Maxwell, California · Colusa County

198 PPM

11.6 GPG

Hard

0Soft60120180300+

Verified — State Lab Tested

Dataset updated March 9, 2026Matched to 1 water systemTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 1 matched water system. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis

1 verified treated-water source

1 matched system total for this ZIP; 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 Serving 95955

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.

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.

Water System	Source	Hardness	Pop. Served	Data Source
Maxwell Public Utility District CA0610003	groundwater	198 PPM Hard USGS estimate: 282 PPM	1,175	Verified — State Lab Tested(2023)

Maxwell Public Utility District

CA0610003

Hard

198 PPMgroundwater1,175 servedVerified — State Lab Tested

Source water: 282 PPM

Nearby Zip Codes

95932261 95970151 95987176 9597920 9598844 95920151 9594344 95912197 9598261 9595374 95950197 95948199

What This Means For You

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

Hard Water - Treatment Recommended

Your water is hard. Scale buildup is likely affecting your plumbing and appliances, reducing their lifespan and efficiency. A water softener is recommended to protect your home.

Recommended Products

Salt-Based Water Softener

Our PickAFWFilters Fleck 5600SXT 48K Also GreatWhirlpool WHES40E 40K Also GreatAFWFilters 64K Grain Also GreatAFWFilters Iron Pro 2 64K Also GreatSpringWell Filter + Softener Combo

Salt-Free Water Conditioner

Our PickSpringWell Salt-Free Cartridge

Water Hardness Test Kit

Our PickVarify (150 Strips)Also GreatJNW Direct (150 Strips)

Shower Head Filter

Our PickWeddell Duo Also GreatAquaBliss SF100 Also GreatSprite Pure 7-Setting Also GreatAqua Earth 20-Stage

Water Softener Salt

Our PickMorton Clean & Protect Also GreatDiamond Crystal Bright & Soft

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | Size Calculator | 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 Maxwell, CA (95955).

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Frequently Asked Questions

Is the water hard in Maxwell, CA (95955)?

The average water hardness in 95955 is 198 PPM (11.6 GPG), which is classified as hard.

Do I need a water softener in 95955?

With hardness of 198 PPM, a water softener is recommended for homes in 95955.

Is hard water in 95955 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 95955?

Zip code 95955 in Maxwell, California is served by 1 water system.