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Water Hardness in 95043

Paicines, California · San Benito County

368 PPM
21.5 GPG
Very Hard
0Soft60120180300+
Verified - State Lab Tested

Dataset updated March 9, 2026Matched to 4 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 4 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
1 verified treated-water source
4 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 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 95043

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.

4 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.
Hollister, City Of
CA3510001
Moderately Hard
148 PPMsurface water26,017 servedVerified - State Lab Tested
Source water: 587 PPM
Sunnyslope County Water Dist
CA3510003
Very Hard
587 PPMsurface water24,954 servedHigh Confidence - USGS Monitoring
Thousand Trails San Benito Preserve
CA3500505
Very Hard
417 PPMgroundwater1,017 servedEstimated - Nearby Data
Rancho San Joaquin Mwc
CA3500581
Very Hard
587 PPMgroundwater914 servedEstimated - County Avg

Nearby Zip Codes

93960244939262519393024893925248939542489362216593927247

What This Means For You

Use this ZIP 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.

MethodologyData sourcesHow 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 Paicines, CA (95043).

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Frequently Asked Questions

Is the water hard in Paicines, CA (95043)?

The average water hardness in 95043 is 368 PPM (21.5 GPG), which is classified as very hard.

Do I need a water softener in 95043?

With hardness of 368 PPM, a water softener is recommended for homes in 95043.

Is hard water in 95043 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 95043?

Zip code 95043 in Paicines, California is served by 4 water systems.

Learn More About Your Water

How to Test Water Hardness at Home

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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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Well Water Hardness: Why It's Usually Hard & How to Treat It

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