Water Hardness in Bakersfield, CA

Q: Do I need a water softener in Bakersfield, CA?

With a citywide weighted average hardness of 171 PPM, a water softener is worth considering for homes in Bakersfield. Consider a water softener or conditioner to reduce scale buildup.

Q: How many water systems serve Bakersfield, CA?

Bakersfield, California has 27 matched water systems across 8 zip codes.

California · 8 zip codes · 27 matched water systems

51 PPM

3 GPG

Soft

0Soft60120180300+

Verified - State Lab Tested

City avg (weighted): 171 PPM

Dataset updated March 9, 202627 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading

Cws - Bakersfield

CA1510003

Water source: surface water

Source year: 2024

Serves: 267,881

USGS environmental estimate: 192 PPM

City report

Is Bakersfield, CA Water Hard or Soft?

The displayed hardness for Bakersfield, CA is 51 PPM (3 GPG) from Cws - Bakersfield, classified as soft. The citywide weighted average is 171 PPM.

Displayed reading

51 PPM

Soft

Local coverage

8 ZIPs

27 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.

View matched system Methodology Data sources Search by ZIP code

Source context

How this city reading is built

This city reading is a weighted rollup across 27 matched water systems and 8 ZIP codes. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis

4 verified treated-water sources

27 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 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 Bakersfield

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

27 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
Cws - Bakersfield CA1510003	surface water	51 PPM Soft USGS estimate: 192 PPM	267,881	Verified - State Lab Tested(2024)
Bakersfield, City Of CA1510031	surface water	500 PPM Very Hard USGS estimate: 192 PPM	160,144	Verified - State Lab Tested(2024)
Delano, City Of CA1510005	groundwater	146 PPM Moderately Hard	51,428	High Confidence - USGS Monitoring
Oildale Mwc CA1510015	surface water	113 PPM Slightly Hard	44,899	High Confidence - USGS Monitoring
Indian Wells Valley W.D. CA1510017	groundwater	125 PPM Moderately Hard	41,580	Estimated - County Avg

Cws - Bakersfield

CA1510003

Soft

51 PPMsurface water267,881 servedVerified - State Lab Tested

Source water: 192 PPM

Bakersfield, City Of

CA1510031

Very Hard

500 PPMsurface water160,144 servedVerified - State Lab Tested

Source water: 192 PPM

Delano, City Of

CA1510005

Moderately Hard

146 PPMgroundwater51,428 servedHigh Confidence - USGS Monitoring

Oildale Mwc

CA1510015

Slightly Hard

113 PPMsurface water44,899 servedHigh Confidence - USGS Monitoring

Indian Wells Valley W.D.

CA1510017

Moderately Hard

125 PPMgroundwater41,580 servedEstimated - County Avg

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

Zip Codes in Bakersfield, CA

93301171 93304171 93306171 93307171 93308171 93309171 93311171 93313171

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.

Methodology Data sources 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 Bakersfield, CA.

Submit Your Data

Frequently Asked Questions

How hard is the water in Bakersfield, CA?

The citywide weighted average water hardness in Bakersfield, CA is 171 PPM (10 GPG), classified as moderately hard. This is based on 27 matched water systems. The gauge highlights Cws - Bakersfield, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Bakersfield, CA?

With a citywide average hardness of 171 PPM, a water softener is worth considering for homes in Bakersfield. Confirm your tap reading before sizing equipment.

Is hard water in Bakersfield, 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 Bakersfield, CA?

Bakersfield, California is served by 27 matched water systems across 8 zip codes.

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.

10 min read

How to Test Water Hardness at Home

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

8 min read