Longboat Key, FL water hardness
Reported by Town of Longboat Key · June 2023
- FL typical
- 120 mg/L
- EPA health violations since 2016
- 0
- Data
- Utility report
The water in Longboat Key carries roughly 35 mg/L of dissolved calcium and magnesium, or 2.1 grains per gallon. That is soft water. The number comes from Town of Longboat Key, dated June 2023.
At 35 mg/L, Longboat Key is 85 mg/L below the typical Florida figure of 120. None of the 10 nearest cities we track has softer water. The range nearby runs from 119 mg/L in Bradenton to 169 in Southgate.
What 35 mg/L means at home
Soap and shampoo lather with very little product. Kettles and showerheads stay mostly free of white crust.
Some people notice that soap feels slow to rinse off in soft water. That slippery feel is normal and harmless.
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
Nothing, as far as hardness goes. At 35 mg/L a softener would have almost nothing to remove.
Carbon filter
If the water tastes of chlorine, a pitcher or faucet carbon filter takes care of that. It does not change hardness.
EPA record for Longboat Key's water system
No health-based violations since 2016
Serves about 7,098 people from surface water.
- Health-based
- 0
- Monitoring or reporting
- 11
- Open now
- 3
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 Longboat Key water hard?
No. It measures about 35 mg/L (2.1 grains per gallon), which the USGS classes as soft.
What is the water hardness in Longboat Key in grains per gallon?
About 2.1 gpg. One grain per gallon equals 17.1 mg/L, so 35 mg/L divided by 17.1 gives 2.1.
Has the Longboat Key water system had EPA violations?
EPA records show no health-based violations for Town of Longboat Key since 2016. There were also 11 monitoring or reporting violations, which are about late or missing tests and notices.
Nearby cities
- Bradenton119 mg/LModerately hard
- Sarasota153 mg/LHard
- Palmetto119 mg/LModerately hard
- Southgate169 mg/LHard
- The Meadows169 mg/LHard
- Ellenton119 mg/LModerately hard
- Ridge Wood Heights169 mg/LHard
- Memphis119 mg/LModerately hard
- South Gate Ridge169 mg/LHard
- Sarasota Springs169 mg/LHard
Hardness data: TapWaterData US Water Hardness (utility report, June 22, 2023), CC BY 4.0. Population: US Census Bureau. Violations: EPA ECHO. How we use them.