How hard is the water in Williamsburg, FL?

Tap water hardness
99mg/L
5.8gpg
Moderately hard

Reported by OCUD/Western Regional WTR Sys (5 WPS) · August 2025

FL typical
120 mg/L
EPA health violations since 2016
0
Softener for 3 people
24k grain
Data
Utility report

The water in Williamsburg carries roughly 99 mg/L of dissolved calcium and magnesium, or 5.8 grains per gallon. That is moderately hard water. The number comes from OCUD/Western Regional WTR Sys (5 WPS), dated August 2025.

Williamsburg on the hardness scale, with nearby cities
060120180240300360+FL typical 120Kissimmee: 52 mg/LKissimmee 52Hunters Creek: 99 mg/LHunters Creek 99Southchase: 99 mg/LSouthchase 99Meadow Woods: 99 mg/LMeadow Woods 99Lake Butler: 99 mg/LLake Butler 99Belle Isle: 111 mg/LBelle Isle 111Pine Castle: 120 mg/LPine Castle 120Orlando: 120 mg/LOrlando 120Conway: 120 mg/LConway 120Orlovista: 120 mg/LOrlovista 120Williamsburg 99mg/L as calcium carbonate060120180240300360+FL 120Kissimmee: 52 mg/LKissimmee 52Hunters Creek: 99 mg/LHunters Cr. 99Southchase: 99 mg/LSouthchase 99Meadow Woods: 99 mg/LMeadow Woo. 99Belle Isle: 111 mg/LBelle Isle 111Pine Castle: 120 mg/LPine Castle 12099 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Williamsburg sits 21 mg/L below the typical Florida figure of 120. Of the 10 nearest cities we track, 1 has softer water and 5 have harder. The range nearby runs from 52 mg/L in Kissimmee to 120 in Pine Castle.

What 99 mg/L means at home

You may see faint white spots on glasses and shower doors after the water dries.

Scale builds up slowly. A kettle or coffee maker needs descaling now and then, maybe every few months.

Hardness is not a health problem, and EPA sets no limit for it. It is a matter of scale and soap.

What to do about it

Optional. Plenty of households at this level live with it and descale the kettle now and then.

Water softener

Worth a look if spots on glass bother you, or if your tankless water heater manual asks for softer water.

Carbon filter

Improves taste and removes chlorine. It leaves calcium and magnesium in place.

Softener size for Williamsburg

3 people × 75 gallons a day × 5.8 gpg = 1,305 grains a day. A 24,000-grain unit regenerates about every 18 days.

Size it for your household

EPA record for Williamsburg's water system

OCUD/Western Regional WTR Sys (5 WPS) · PWSID FL3481546

No health-based violations since 2016

Serves about 206,742 people from groundwater.

Health-based
0
Monitoring or reporting
2
Open now
0

TapWaterData ties Williamsburg to this system. EPA's service-area records do not name Williamsburg, so check the utility printed on your water bill.

Health-based means a contaminant above its legal limit or a missed treatment step. Monitoring and reporting violations are late or missing tests and notices. Source: EPA ECHO, 2026Q3 export, violations with periods starting 2016 or later. Full EPA record.

Questions

Is Williamsburg water hard?

Somewhat. It measures about 99 mg/L (5.8 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in Williamsburg in grains per gallon?

About 5.8 gpg. One grain per gallon equals 17.1 mg/L, so 99 mg/L divided by 17.1 gives 5.8.

What size water softener do I need in Williamsburg?

For 3 people using 75 gallons each per day, 5.8 gpg works out to about 1,305 grains a day. A 24,000-grain softener covers that with a regeneration about every 18 days.

Has the Williamsburg water system had EPA violations?

EPA records show no health-based violations for OCUD/Western Regional WTR Sys (5 WPS) since 2016. There were also 2 monitoring or reporting violations, which are about late or missing tests and notices.

Nearby cities

All 214 cities in Florida

Hardness data: TapWaterData US Water Hardness (utility report, August 25, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.