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Water Hardness in 95648

Lincoln, California · Placer County

44 PPM
2.6 GPG
Soft
0Soft60120180300+
Verified — State Lab Tested

Dataset updated March 9, 2026Matched to 9 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 9 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
6 verified treated-water sources
9 matched systems total for this ZIP; 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 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 Serving 95648

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.

9 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.
City Of Roseville
CA3110008
Soft
23 PPMsurface water155,612 servedVerified — State Lab Tested
Source water: 105 PPM
Placer Cwa - Foothill
CA3110025
Soft
19 PPMsurface water89,544 servedVerified — State Lab Tested
Source water: 70 PPM
City Of Lincoln
CA3110004
Moderately Hard
153 PPMsurface water54,538 servedHigh Confidence — USGS Monitoring
Placer Cwa - Auburn/Bowman
CA3110005
Soft
22 PPMsurface water27,294 servedVerified — State Lab Tested
Source water: 70 PPM
Northstar C.S.D.
CA3110028
Slightly Hard
66 PPMsurface water15,452 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

9568144957654495658449566344956745595692195956774495747449565044956784495668559560344

What This Means For You

Recommendations are based on the displayed ZIP 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 Lincoln, CA (95648).

Submit Your Data

Frequently Asked Questions

Is the water hard in Lincoln, CA (95648)?

The average water hardness in 95648 is 44 PPM (2.6 GPG), which is classified as soft.

Do I need a water softener in 95648?

At 44 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 95648 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 95648?

Zip code 95648 in Lincoln, California is served by 9 water systems.

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.

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How to Test Water Hardness at Home

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

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