How hard is the water in Surfside, FL?

Tap water hardness
92mg/L
5.3gpg
Moderately hard

Reported by Surfside, Town of · 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 Surfside has about 92 mg/L of hardness, which is 5.3 grains per gallon. On the USGS scale that counts as moderately hard. The number comes from Surfside, Town of, dated September 2025.

Surfside on the hardness scale, with nearby cities
060120180240300360+FL typical 120Country Club: 28 mg/LCountry Club 28Palm Springs North: 28 mg/LPalm Springs North 28Miami Beach: 35 mg/LMiami Beach 35Hollywood: 51 mg/LHollywood 51Dania Beach: 51 mg/LDania Beach 51North Miami: 89 mg/LNorth Miami 89North Miami Beach: 212 mg/LNorth Miami Beach 212Miami Gardens: 212 mg/LMiami Gardens 212Hialeah: 212 mg/LHialeah 212Miami: 248 mg/LMiami 248Surfside 92mg/L as calcium carbonate060120180240300360+FL 120Miami Beach: 35 mg/LMiami Beach 35Hollywood: 51 mg/LHollywood 51North Miami: 89 mg/LNorth Miami 89North Miami Beach: 212 mg/LNorth Miam. 212Miami Gardens: 212 mg/LMiami Gard. 212Miami: 248 mg/LMiami 24892 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Surfside sits 28 mg/L below the typical Florida figure of 120. Of the 10 nearest cities we track, 6 have softer water and 4 have harder. The range nearby runs from 28 mg/L in Country Club to 248 in Miami.

What 92 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 Surfside

3 people × 75 gallons a day × 5.3 gpg = 1,204 grains a day. A 24,000-grain unit regenerates about every 19 days.

Size it for your household

EPA record for Surfside's water system

Surfside, Town of · PWSID FL4131424

No health-based violations since 2016

Serves about 5,744 people from groundwater.

Health-based
0
Monitoring or reporting
9
Open now
1

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 Surfside water hard?

Somewhat. It measures about 92 mg/L (5.3 grains per gallon), which the USGS classes as moderately hard.

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

About 5.3 gpg. One grain per gallon equals 17.1 mg/L, so 92 mg/L divided by 17.1 gives 5.3.

What size water softener do I need in Surfside?

For 3 people using 75 gallons each per day, 5.3 gpg works out to about 1,204 grains a day. A 24,000-grain softener covers that with a regeneration about every 19 days.

Has the Surfside water system had EPA violations?

EPA records show no health-based violations for Surfside, Town of since 2016. There were also 9 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 24, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.