Water Hardness in El Dorado Hills, CA

Q: Do I need a water softener in El Dorado Hills, CA?

At a citywide weighted average of 43 PPM, El Dorado Hills has relatively soft water. A water softener is generally not necessary.

Q: How many water systems serve El Dorado Hills, CA?

El Dorado Hills, California has 28 matched water systems across 2 zip codes.

California · 2 zip codes · 28 matched water systems

44 PPM

2.5 GPG

Soft

0Soft60120180300+

Verified — State Lab Tested

City avg (weighted): 43 PPM

Dataset updated March 9, 202628 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading

City Of Sacramento Main

CA3410020

Water source: surface water

Source year: 2024

Serves: 520,407

USGS environmental estimate: 54 PPM

Source context

How this city reading is built

This city reading is a weighted rollup across 28 matched water systems and 2 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis

14 verified treated-water sources

28 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 2023-2025

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 El Dorado Hills

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

28 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.

Water System	Source	Hardness	Pop. Served	Data Source
City Of Sacramento Main CA3410020	surface water	44 PPM Soft USGS estimate: 54 PPM	520,407	Verified — State Lab Tested(2024)
Sacramento Suburban Water District CA3410001	surface water	116 PPM Slightly Hard	194,444	High Confidence — USGS Monitoring
Scwa - Laguna/Vineyard CA3410029	surface water	64 PPM Slightly Hard USGS estimate: 93 PPM	184,896	Verified — State Lab Tested(2023)
El Dorado Id - Main CA0910001	surface water	13 PPM Soft USGS estimate: 11 PPM	132,171	Verified — State Lab Tested(2023)
South Tahoe Pud - Main CA0910002	groundwater	21 PPM Soft USGS estimate: 27 PPM	100,000	Verified — State Lab Tested(2025)

City Of Sacramento Main

CA3410020

Soft

44 PPMsurface water520,407 servedVerified — State Lab Tested

Source water: 54 PPM

Sacramento Suburban Water District

CA3410001

Slightly Hard

116 PPMsurface water194,444 servedHigh Confidence — USGS Monitoring

Scwa - Laguna/Vineyard

CA3410029

Slightly Hard

64 PPMsurface water184,896 servedVerified — State Lab Tested

Source water: 93 PPM

El Dorado Id - Main

CA0910001

Soft

13 PPMsurface water132,171 servedVerified — State Lab Tested

Source water: 11 PPM

South Tahoe Pud - Main

CA0910002

Soft

21 PPMgroundwater100,000 servedVerified — State Lab Tested

Source water: 27 PPM

Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in El Dorado Hills, CA

9563070 9576217

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 El Dorado Hills, CA.

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Frequently Asked Questions

How hard is the water in El Dorado Hills, CA?

The citywide weighted average water hardness in El Dorado Hills, CA is 43 PPM (2.5 GPG), classified as soft. This is based on 28 matched water systems. The gauge highlights City Of Sacramento Main, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in El Dorado Hills, CA?

At 43 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in El Dorado Hills, 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 El Dorado Hills, CA?

El Dorado Hills, California is served by 28 matched water systems across 2 zip codes.

Learn More About Your Water

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