Hard water in Plant City, FL

Tap water hardness
159mg/L
9.3gpg
Hard

Reported by City of Plant City Utility · May 2025

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

Tap water in Plant City has about 159 mg/L of hardness, which is 9.3 grains per gallon. On the USGS scale that counts as hard. The number comes from City of Plant City Utility, dated May 2025.

Plant City on the hardness scale, with nearby cities
060120180240300360+FL typical 120Zephyrhills: 120 mg/LZephyrhills 120Medulla: 137 mg/LMedulla 137Lakeland: 137 mg/LLakeland 137Lakeland Highlands: 137 mg/LLakeland Highlands 137Crystal Lake: 137 mg/LCrystal Lake 137Highland City: 137 mg/LHighland City 137Fussels Corner: 137 mg/LFussels Corner 137Pebble Creek: 139 mg/LPebble Creek 139Brandon: 141 mg/LBrandon 141Riverview: 141 mg/LRiverview 141Plant City 159mg/L as calcium carbonate060120180240300360+FL 120Medulla: 137 mg/LMedulla 137Lakeland: 137 mg/LLakeland 137Lakeland Highlands: 137 mg/LLakeland H. 137Crystal Lake: 137 mg/LCrystal La. 137Highland City: 137 mg/LHighland C. 137Brandon: 141 mg/LBrandon 141159 mg/Lmg/L as calcium carbonate
Soft 0–60 mg/LModerately hard 61–120 mg/LHard 121–180 mg/LVery hard 181+ mg/L

Plant City sits 39 mg/L above the typical Florida figure of 120. None of the 10 nearest cities we track has harder water. The range nearby runs from 120 mg/L in Zephyrhills to 141 in Brandon.

What 159 mg/L means at home

Expect white crust on faucets and showerheads, plus spots on dishes that come out of the dishwasher.

Kettles collect scale quickly. Water heaters build up sediment at the bottom of the tank, which makes them work harder over time.

Soap and detergent need a little more to lather, and soap scum shows up in the tub.

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

At 159 mg/L most of the trouble is scale, and only a few things deal with it.

Ion-exchange water softener

The standard whole-house fix. It swaps calcium and magnesium for sodium or potassium and needs salt plus a drain. Size it with the calculator below.

Salt-free conditioner

No salt and no drain line. It changes how minerals form scale instead of removing them, so water still tests hard.

Reverse osmosis or carbon filter

Under-sink reverse osmosis removes minerals from drinking water only. Plain carbon filters improve taste but do not soften.

Softener size for Plant City

3 people × 75 gallons a day × 9.3 gpg = 2,092 grains a day. A 24,000-grain unit regenerates about every 11 days.

Size it for your household

EPA record for Plant City's water system

City of Plant City Utility · PWSID FL6290323

No health-based violations since 2016

Serves about 41,601 people from groundwater.

Health-based
0
Monitoring or reporting
0
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 Plant City water hard?

Yes. It measures about 159 mg/L (9.3 grains per gallon), which the USGS classes as hard.

What is the water hardness in Plant City in grains per gallon?

About 9.3 gpg. One grain per gallon equals 17.1 mg/L, so 159 mg/L divided by 17.1 gives 9.3.

What size water softener do I need in Plant City?

For 3 people using 75 gallons each per day, 9.3 gpg works out to about 2,092 grains a day. A 24,000-grain softener covers that with a regeneration about every 11 days.

Has the Plant City water system had EPA violations?

EPA records show no health-based violations for City of Plant City Utility since 2016.

Nearby cities

All 214 cities in Florida

Hardness data: TapWaterData US Water Hardness (utility report, May 12, 2025), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.