Water Hardness in 23188
Williamsburg, Virginia · James City County
Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology
How this ZIP reading is built
This ZIP reading is built from 12 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.
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 23188
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.
| Water System | Source | Hardness | Pop. Served |
|---|---|---|---|
Jcsa - Central System VA3095490 | groundwater | 73 PPM Slightly Hard | |
Woodhaven Shores VA4127925 | groundwater | 73 PPM Slightly Hard | |
Wexford Hills - Jcsa VA3095862 | groundwater | 73 PPM Slightly Hard | |
Ware Creek Manor - Jcsa VA3095858 | groundwater | 73 PPM Slightly Hard | |
Retreat (Jcsa) VA3095760 | groundwater | 73 PPM Slightly Hard |
Nearby Zip Codes
What This Means For You
Recommendations are based on the displayed ZIP 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 (23188).
Frequently Asked Questions
Is the water hard in Williamsburg, VA (23188)?
The average water hardness in 23188 is 73 PPM (4.3 GPG), which is classified as slightly hard.
Do I need a water softener in 23188?
At 73 PPM, your water is relatively soft. A water softener is generally not necessary.
Is hard water in 23188 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 23188?
Zip code 23188 in Williamsburg, Virginia is served by 12 water systems.
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