Typical values from 50 sampled wells in Hamilton County · Full groundwater profile
What Are You Noticing in Your Water?
Pre-selected from Hamilton County well data. Untick anything you do not notice in your own water.
Based on the contaminants most commonly reported in this region. Always confirm with a certified lab water test before buying equipment.
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Explore Hamilton County and nearby counties
Hamilton County has a high rate of private well reliance in North Central Florida, with 75.7% of built parcels drawing drinking water from an onsite well rather than a public utility, according to the Florida Department of Health.
Hamilton County is a Georgia-border county where the Alapaha and Suwannee Rivers meet, and like the rest of this region, its groundwater comes from the Floridan Aquifer, a limestone formation that shapes which well water problems show up most often here.
In this guide
Groundwater Profile: Hamilton County
Most groundwater pumped in Hamilton County comes from the Floridan Aquifer (USGS, 2015 withdrawals). Across 50 sampled wells, the median hardness is 12 gpg, which the USGS classes as very hard. It applies to wells across Hamilton County, including around Jasper, Jennings and White Springs.
What shows up in local well samples:
- HardnessMedian 12 gpg; 94% of 50 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 - IronMedian 0.35 mg/L; 54% of 48 sampled wells above 0.3 mg/L
Stains sinks, toilets and laundry orange-brown and can taste metallic. The EPA aesthetic guideline is 0.3 mg/L. See how to choose an iron filter for your test result.
Iron filter sizing guide
Hydrogen sulfide (the rotten-egg smell) was measured in only 2 Hamilton County wells, too few to say how common it is. Limited local data (fewer than 20 samples): individual well testing recommended. If you notice the smell, a sulfide test confirms it.
How Hamilton County Compares to Florida and the U.S.
See How Hamilton County Compares to Florida & the US
| Share of wells with… | Hamilton CountyHamilton | FloridaFL | United StatesUS |
|---|---|---|---|
| Hard water (above 7 gpg) | 94% | 79% | 60% |
| Iron above 0.3 mg/L | 54% | 35% | 19% |
| Manganese above 0.05 mg/L | 25% | 8% | 21% |
| Dissolved solids above 500 mg/L | 0% | 22% | 15% |
| Acidic water (pH below 6.5) | 0% | 15% | 14% |
| Nitrate above 10 mg/L (EPA limit) | Limited data | 2% | 4% |
| Arsenic above 10 µg/L (EPA limit) | 2% | 3% | 7% |
| Median hardness | 12 gpg | 12.4 gpg | — |
| Median pH | 7.3 | 7.2 | 7.3 |
Hamilton County and Florida: share of sampled wells (all well types, samples since 2000) whose typical value exceeds the level, from the Water Quality Portal. United States: USGS Circular 1332, about 2,100 domestic wells in 48 states sampled 1991 to 2004. Well types and years differ, so read this as a broad comparison. Highlighted cells are well above the national share.
See what a typical Hamilton County well needs
Opens the diagnostic calculator with Hamilton County median values (12 gpg hardness, 0.35 ppm iron, pH 7.3) for a 3–4 person home. Swap in your own lab results for an exact plan.
Testing Your Well in Hamilton County
The Florida Department of Health in Hamilton 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 Hamilton 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
- Iron and manganese before choosing a filter
- After any flood, new well work or a change in taste, color or smell
The Florida Department of Health in Hamilton County can explain how to collect samples and where to send them. Statewide guidance is on the FDOH private well testing page, and our guide to how to test well water covers which tests to order.
Nearby Counties
Hamilton County borders these counties with published reports:
Frequently Asked Questions
How hard is well water in Hamilton County?
Groundwater samples from 50 wells in Hamilton County have a median hardness of 12 grains per gallon (206 mg/L), which the USGS classes as very hard. About 94% of sampled wells are above 7 gpg, the point where a water softener is usually worthwhile. The Florida statewide median is 12.4 gpg.
Is iron a problem in Hamilton County well water?
The median iron level across 48 sampled wells is 0.35 mg/L, above the EPA aesthetic guideline of 0.3 mg/L, and 54% of wells exceed it. Orange staining is common, and an iron filter sized to your test result is the usual fix.
Why does my well water smell like rotten eggs in Hamilton County?
Hydrogen sulfide (the rotten-egg smell) was measured in only 2 Hamilton County wells, too few to say how common it is. Limited local data (fewer than 20 samples): individual well testing recommended. If you notice the smell, a sulfide test confirms it. The smell is a nuisance rather than a health risk at typical levels.
Which aquifer supplies wells in Hamilton County?
Most groundwater pumped in Hamilton County comes from the Floridan Aquifer (USGS, 2015 withdrawals).
Does boiling well water make it safe to drink in Hamilton County?
Only if bacteria are the problem. A one-minute rolling boil kills germs, but it does not remove nitrate, arsenic or other chemicals, and it concentrates them as water evaporates. Test first, and see our boiling well water myth buster for when boiling helps.
Why does Hamilton County have so many private wells?
Rural counties like Hamilton often fall outside the service area of any municipal water utility, so new homes are built with an onsite well by default. The Florida Department of Health’s 2022 parcel mapping found 75.7% of built parcels here on private wells.
Do I need to test my well water if my neighbors say theirs is fine?
Yes. Well depth, casing condition, and the exact aquifer layer tapped can vary block to block, so one neighbor’s clean test does not guarantee another’s. A full annual test is the only reliable way to know what is in your own water.
Is Floridan Aquifer water generally safe to drink untreated?
Much of it is chemically safe but aesthetically unpleasant (hard, sulfur-smelling, or iron-stained), which is why treatment here is usually about comfort and plumbing protection rather than an acute health risk. A lab test is still the only way to rule out bacteria, nitrates, or other contaminants specific to your well.
Written by Well Water Advisor Editorial Team.