How hard is the water in St. Cloud, FL?

Tap water hardness
102mg/L
6.0gpg
Moderately hard

Reported by ST. Cloud, City of (3 WPS) · January 2025

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

Tap water in St. Cloud has about 102 mg/L of hardness, which is 6.0 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from ST. Cloud, City of (3 WPS), dated January 2025.

St. Cloud on the hardness scale, with nearby cities
060120180240300360+FL typical 120Kissimmee: 52 mg/LKissimmee 52Meadow Woods: 99 mg/LMeadow Woods 99Southchase: 99 mg/LSouthchase 99Hunters Creek: 99 mg/LHunters Creek 99Williamsburg: 99 mg/LWilliamsburg 99Belle Isle: 111 mg/LBelle Isle 111Rio Pinar: 111 mg/LRio Pinar 111Pine Castle: 120 mg/LPine Castle 120Orlando: 120 mg/LOrlando 120Conway: 120 mg/LConway 120St. Cloud 102mg/L as calcium carbonate060120180240300360+FL 120Kissimmee: 52 mg/LKissimmee 52Meadow Woods: 99 mg/LMeadow Woo. 99Southchase: 99 mg/LSouthchase 99Hunters Creek: 99 mg/LHunters Cr. 99Williamsburg: 99 mg/LWilliamsbu. 99Pine Castle: 120 mg/LPine Castle 120102 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

At 102 mg/L, St. Cloud is 18 mg/L below the typical Florida figure of 120. Of the 10 nearest cities we track, 5 have softer water and 5 have harder. The range nearby runs from 52 mg/L in Kissimmee to 120 in Pine Castle.

What 102 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 St. Cloud

3 people × 75 gallons a day × 6.0 gpg = 1,341 grains a day. A 24,000-grain unit regenerates about every 17 days.

Size it for your household

EPA record for St. Cloud's water system

ST. Cloud, City of (3 WPS) · PWSID FL3491373

No health-based violations since 2016

Serves about 82,752 people from groundwater.

Health-based
0
Monitoring or reporting
14
Open now
0

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 St. Cloud water hard?

Somewhat. It measures about 102 mg/L (6.0 grains per gallon), which the USGS classes as moderately hard.

What is the water hardness in St. Cloud in grains per gallon?

About 6.0 gpg. One grain per gallon equals 17.1 mg/L, so 102 mg/L divided by 17.1 gives 6.0.

What size water softener do I need in St. Cloud?

For 3 people using 75 gallons each per day, 6.0 gpg works out to about 1,341 grains a day. A 24,000-grain softener covers that with a regeneration about every 17 days.

Has the St. Cloud water system had EPA violations?

EPA records show no health-based violations for ST. Cloud, City of (3 WPS) since 2016. There were also 14 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, January 27, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.