Typical values from 44 sampled wells in Charlotte County · Full groundwater profile
Quick Answers for Charlotte County Well Owners
Very hard water: 29.2 gpg. At 29.2 grains per gallon, well water in Charlotte County is harder than in 55 of the other 57 Florida counties with enough data.
Is it safe? Usually, going by local records, but confirm with a yearly bacteria and nitrate test.
What usually fixes it:
- A whole-house sediment filter first, so sand and scale do not foul the stages after it.
- A softener in the 64,000-grain range for a family of four at 29.2 gpg (includes 5 gpg per ppm of iron).
See the right order for these stages. Your own test result decides the final list.
Not sure what to install? Get a filter recommendation for Charlotte County homesIf your water comes from a utility, its annual Consumer Confidence Report is the right source; the figures here are for private wells. Find your utility's report
On this page (7 sections)
Getting Your Well Tested in Charlotte County
- Florida Department of Health in Charlotte County: 941-624-7200. Drinking water program page
- Certified labs: how to find a state-certified lab (FDOH)
Contacts as listed on the official page, checked November 2026. Call before you go; hours and fees change.
What Are You Noticing in Your Water?
Pre-selected from Charlotte County well data. Untick anything you do not notice in your own water.
Confirm with a lab test before buying equipment.
Explore Florida Interactive Map
Explore Charlotte County and nearby counties
Nearly all homes in Charlotte County, in Southwest Florida, are on public water. The Florida Department of Health's 2024 inventory counts 3.4% of built parcels, roughly 4,373 properties, on private wells, mostly on rural lots outside utility service areas.
Most groundwater pumped in Charlotte County comes from the Floridan Aquifer, with a significant share also from the Intermediate Aquifer System (USGS, 2015 withdrawals). Samples from 44 local wells put the median hardness at 29.2 gpg (very hard) and median iron at 0.03 mg/L. The county's largest communities are Port Charlotte, Punta Gorda and Rotonda.
In this guide
Groundwater Profile: Charlotte County
Across 44 sampled wells, the median hardness is 29.2 gpg (very hard). At 29.2 gpg, Charlotte wells run harder than Lee (25.6 gpg), DeSoto (20.5 gpg) and Highlands (7.5 gpg) and softer than Sarasota (38.4 gpg) next door.
Another address? Check hardness by ZIP code.
What shows up in local well samples:
- HardnessMedian 29.2 gpg; 98% of 44 sampled wells above 7 gpg
Calcium and magnesium dissolved from limestone. Leaves scale on fixtures and water heaters and reduces soap lather. Not a health risk.
Water softener sizing - Chloride (salinity)Median chloride 530 mg/L
A salty taste and faster corrosion, often a sign of saltwater intrusion. The EPA aesthetic guideline is 250 mg/L.
Reverse osmosis guide
How Charlotte County Compares to Florida and the U.S.
See How Charlotte County Compares to Florida & the US
| Share of wells with… | Charlotte CountyCharlotte | FloridaFL | United StatesUS |
|---|---|---|---|
| Hard water (above 7 gpg) | 98% | 79% | 60% |
| Iron above 0.3 mg/L | 23% | 35% | 19% |
| Manganese above 0.05 mg/L | 2% | 8% | 21% |
| Dissolved solids above 500 mg/L | 82% | 22% | 15% |
| Acidic water (pH below 6.5) | 7% | 15% | 14% |
| Nitrate above 10 mg/L (EPA limit) | Limited data | 2% | 4% |
| Arsenic above 10 µg/L (EPA limit) | 0% | 3% | 7% |
| Median hardness | 29.2 gpg | 12.4 gpg | — |
| Median pH | 7.3 | 7.2 | 7.3 |
Sources: Water Quality Portal (since 2000); US: USGS Circular 1332. Highlighted: well above the US share.
See what a typical Charlotte County well needs
Pre-filled with the Charlotte medians. Swap in your own results.
Testing Your Well in Charlotte County
The Florida Department of Health in Charlotte County oversees private well permitting in the county and investigates suspected contamination. For routine bacteria, nitrate or full-panel tests, use a laboratory certified by the Florida Department of Health.
What to test for in Charlotte County:
- Bacteria (total coliform and E. coli) and nitrate, at least once a year (Florida Department of Health recommendation)
- Hardness in grains per gallon (gpg) to size a softener
- Chloride and sodium, to catch saltwater intrusion
- After any flood, new well work or a change in taste, color or smell
Which tests to order and how: how to test well water.
After a positive coliform test, shock-chlorinate the well and retest 10 to 14 days later.
Nearby Counties
Charlotte County borders these counties with published reports:
DeSoto County
20.5 gpg hardness · Hardness, Total dissolved solidsGlades County
15 gpg hardness · Hardness, Chloride (salinity)Highlands County
7.5 gpg hardness · HardnessLee County
25.6 gpg hardness · Hardness, Hydrogen sulfideSarasota County
38.4 gpg hardness · Hardness, Chloride (salinity)Counties with similar well water
Elsewhere in Florida, these counties have well water like Charlotte County:
Frequently Asked Questions
Is well water in Charlotte County safe to drink?
Usually, as far as public records go: no health-based limit is commonly exceeded across 44 sampled Charlotte wells. The common problems here (hardness) affect taste, stains and plumbing, not health. Still test for bacteria and nitrate every year, because county data cannot vouch for a single well.
How many homes in Charlotte County use private wells?
The Florida Department of Health’s Florida Water Management Inventory (2024 data) found 3.4% of built parcels in Charlotte County on private wells, roughly 4,373 properties.
How hard is well water in Charlotte County?
29.2 gpg (499 mg/L) in the typical well, based on 44 samples: very hard on the USGS scale, against a Florida median of 12.4 gpg. 98% of sampled wells top 7 gpg, where a softener usually pays off.
Is iron a problem in Charlotte County well water?
Only in some wells. 23% of 44 sampled Charlotte wells top the EPA’s 0.3 mg/L guideline; the typical well has 0.03 mg/L. Orange or black stains are the sign to get a lab test for iron and manganese.
Why does my well water smell like rotten eggs in Charlotte County?
The data cannot say: just 0 Charlotte wells were tested for hydrogen sulfide. If your water smells, test for sulfide, and if the smell is only in hot water, check the water heater anode rod. It is unpleasant but rarely a health risk.
Does boiling well water make it safe to drink in Charlotte County?
For a bacteria problem, yes: boil for one minute (three above 6,500 feet). For anything chemical, no, because evaporation concentrates it. Our boiling well water myth buster explains the difference.
How often should I test my well water in Charlotte County?
The Florida Department of Health recommends testing private wells for bacteria and nitrate at least once a year, and again after flooding or well repairs. The Florida Department of Health in Charlotte County can explain how to collect and submit samples.
Written by Well Water Advisor Editorial Team.