How hard is the water in Casselberry, FL?

Tap water hardness
120mg/L
7.0gpg
Moderately hard

Reported by OCUD/Eastern Water System (2 WP) · September 2025

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

Tap water in Casselberry has about 120 mg/L of hardness, which is 7.0 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from OCUD/Eastern Water System (2 WP), dated September 2025.

Casselberry on the hardness scale, with nearby cities
060120180240300360+FL typical 120Fern Park: 94 mg/LFern Park 94Maitland: 101 mg/LMaitland 101Winter Springs: 105 mg/LWinter Springs 105Winter Park: 116 mg/LWinter Park 116Goldenrod: 120 mg/LGoldenrod 120Altamonte Springs: 120 mg/LAltamonte Springs 120Lake Mary: 122 mg/LLake Mary 122Longwood: 124 mg/LLongwood 124Fairview Shores: 129 mg/LFairview Shores 129Wekiwa Springs: 165 mg/LWekiwa Springs 165Casselberry 120mg/L as calcium carbonate060120180240300360+FL 120Fern Park: 94 mg/LFern Park 94Maitland: 101 mg/LMaitland 101Winter Springs: 105 mg/LWinter Spr. 105Goldenrod: 120 mg/LGoldenrod 120Altamonte Springs: 120 mg/LAltamonte. 120Longwood: 124 mg/LLongwood 124120 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 120 mg/L, Casselberry is close to the typical Florida figure of 120 mg/L. Of the 10 nearest cities we track, 4 have softer water and 4 have harder. The range nearby runs from 94 mg/L in Fern Park to 165 in Wekiwa Springs.

What 120 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 Casselberry

3 people × 75 gallons a day × 7.0 gpg = 1,580 grains a day. A 24,000-grain unit regenerates about every 15 days.

Size it for your household

EPA record for Casselberry's water system

Casselberry, City of (3 WPS) · PWSID FL3590159

No health-based violations since 2016

Serves about 54,747 people from groundwater.

Health-based
0
Monitoring or reporting
4
Open now
1

EPA lists Casselberry, City of (3 WPS) as the system serving Casselberry. The hardness figure above comes from a different system's report, which TapWaterData uses for Casselberry.

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 Casselberry water hard?

Somewhat. It measures about 120 mg/L (7.0 grains per gallon), which the USGS classes as moderately hard.

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

About 7.0 gpg. One grain per gallon equals 17.1 mg/L, so 120 mg/L divided by 17.1 gives 7.0.

What size water softener do I need in Casselberry?

For 3 people using 75 gallons each per day, 7.0 gpg works out to about 1,580 grains a day. A 24,000-grain softener covers that with a regeneration about every 15 days.

Has the Casselberry water system had EPA violations?

EPA records show no health-based violations for Casselberry, City of (3 WPS) since 2016. There were also 4 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, September 23, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.