Water Hardness in Nevada City, CA

California · 1 zip codes · 7 matched water systems

8 PPM
0.5 GPG
Soft
0Soft60120180300+
Verified - State Lab Tested

City avg (weighted): 38 PPM

Dataset updated March 9, 20267 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Nevada Id - E. George, Banner Mountain
CA2910004
Water source: surface water
Source year: 2025
Serves: 17,154
USGS environmental estimate: 27 PPM
City report

Is Nevada City, CA Water Hard or Soft?

The displayed hardness for Nevada City, CA is 8 PPM (0.5 GPG) from Nevada Id - E. George, Banner Mountain, classified as soft. The citywide weighted average is 38 PPM.

Displayed reading
8 PPM
Soft
Local coverage
1 ZIP
7 matched water systems
Source label
California treated-water report
Verified - State Lab Tested

Water hardness is not a drinking-water safety score. It measures calcium and magnesium minerals, and address-level results can shift by pressure zone, supply blend, building plumbing, or private well.

Source context

How this city reading is built

This city reading is a weighted rollup across 7 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
2 verified treated-water sources
7 matched systems 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 2024-2025
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 Nevada City

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

7 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.
Slightly Hard
66 PPMgroundwater36,730 servedHigh Confidence - USGS Monitoring
8 PPMsurface water17,154 servedVerified - State Lab Tested
Source water: 27 PPM
10 PPMsurface water14,072 servedVerified - State Lab Tested
Source water: 27 PPM
Soft
11 PPMsurface water3,148 servedHigh Confidence - USGS Monitoring
Soft
31 PPMgroundwater222 servedHigh Confidence - USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Nevada City, CA

What This Means For You

Use this city reading as a local planning estimate, not a final treatment specification. Hardness can vary by utility zone, seasonal blend, private well, and building plumbing. Confirm your tap reading with a utility report or home hardness test before sizing 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 Nevada City, CA.

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Frequently Asked Questions

How hard is the water in Nevada City, CA?

The citywide weighted average water hardness in Nevada City, CA is 38 PPM (2.2 GPG), classified as soft. This is based on 7 matched water systems. The gauge highlights Nevada Id - E. George, Banner Mountain, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Nevada City, CA?

At 38 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Nevada City, 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 Nevada City, CA?

Nevada City, California is served by 7 matched water systems across 1 zip code.

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