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Water Hardness in Paicines, CA

California · 1 zip codes · 4 matched water systems

148 PPM
8.7 GPG
Moderately Hard
0Soft60120180300+
Verified — State Lab Tested

City avg (weighted): 368 PPM

Dataset updated March 9, 20264 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

System used for this reading
Hollister, City Of
CA3510001
Water source: surface water
Source year: 2023
Serves: 26,017
USGS environmental estimate: 587 PPM
Source context

How this city reading is built

This city reading is a weighted rollup across 4 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
1 verified treated-water source
4 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
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 Paicines

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

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

Zip Codes in Paicines, CA

What This Means For You

Recommendations are based on the displayed hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

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If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Paicines, CA.

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Frequently Asked Questions

How hard is the water in Paicines, CA?

The citywide weighted average water hardness in Paicines, CA is 368 PPM (21.5 GPG), classified as very hard. This is based on 4 matched water systems. The gauge highlights Hollister, City Of, a verified treated-water system, because individual systems can differ from the citywide average.

Do I need a water softener in Paicines, CA?

With a citywide average hardness of 368 PPM, a water softener is recommended for homes in Paicines. Confirm your tap reading before sizing equipment.

Is hard water in Paicines, 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 Paicines, CA?

Paicines, California is served by 4 matched water systems across 1 zip code.

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