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Water Hardness in Williamsburg, VA

Virginia · 1 zip codes · 12 matched water systems

73 PPM
4.3 GPG
Slightly Hard
0Soft60120180300+
High Confidence — USGS Monitoring

Dataset updated March 9, 202612 matched water systems in the city rollupIndividual systems and ZIPs can differ. Methodology

Source context

How this city reading is built

This city reading is a weighted rollup across 12 matched water systems and 1 ZIP code. Citywide readings are useful for comparison, but individual utility zones and ZIPs can differ.

Source basis
12 USGS-backed sources
12 matched systems total for this city; USGS monitoring is used where treated-water reports are unavailable.
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
March 9, 2026
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 Williamsburg

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

12 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.
Jcsa - Central System
VA3095490
Slightly Hard
73 PPMgroundwater57,726 servedHigh Confidence — USGS Monitoring
Woodhaven Shores
VA4127925
Slightly Hard
73 PPMgroundwater1,365 servedHigh Confidence — USGS Monitoring
Wexford Hills - Jcsa
VA3095862
Slightly Hard
73 PPMgroundwater360 servedHigh Confidence — USGS Monitoring
Ware Creek Manor - Jcsa
VA3095858
Slightly Hard
73 PPMgroundwater161 servedHigh Confidence — USGS Monitoring
Retreat (Jcsa)
VA3095760
Slightly Hard
73 PPMgroundwater139 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Zip Codes in Williamsburg, VA

What This Means For You

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

Slightly Hard Water

Your water is slightly hard. You may notice minor spotting on dishes or a slight film on faucets. A water softener is optional but can improve water quality.

Recommended Products

Learn more: Do I Need a Water Softener? | Salt-Based vs Salt-Free | 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 Williamsburg, VA.

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Frequently Asked Questions

How hard is the water in Williamsburg, VA?

The citywide weighted average water hardness in Williamsburg, VA is 73 PPM (4.3 GPG), classified as slightly hard. This is based on 12 matched water systems.

Do I need a water softener in Williamsburg, VA?

At 73 PPM, the citywide average is relatively soft. A water softener is generally not necessary.

Is hard water in Williamsburg, VA 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 Williamsburg, VA?

Williamsburg, Virginia is served by 12 matched water systems across 1 zip code.

Learn More About Your Water