Hernando County, FL
These figures come from wells tested in Hernando County, FL, not from any one well.
- Iron is common in wells in Hernando County, FL (10 of 39 tested wells were over that level), so it's worth testing for.
- Manganese and sulfate are not common in wells in Hernando County, FL (1 of 39 and 7 of 131 tested wells were over). Only a test tells you about your own well.
- Wells in Hernando County, FL are typically hard (126 wells tested).
- Only a test of your own well tells you about your water.
What to test for
Start with the four this site covers:
- iron (common in wells here)
- manganese
- hardness
- sulfate
Most well owners also test for these. We point to the source and don't interpret the results.
- arsenic: occurs naturally in groundwater in many regions. USGS: arsenic and drinking water
- nitrate: common near farmland and septic systems. EPA: private drinking water wells
- total coliform bacteria: the standard yearly well check. EPA: private drinking water wells
- lead and copper: from household plumbing, especially when pH is below 6.5. EPA: lead in drinking water
- PFAS: several states run private-well sampling programs. EPA: PFAS
- a certified lab: states certify labs and some run their own private-well programs. Florida's certified-lab list (from your state drinking-water program)
The numbers
County figures describe the wells sampled there, not any one well. Exact counts, sample years and sources are below.
Iron Recent
| Level it's compared with | 0.3 mg/L |
|---|---|
| Share of wells over the level | 26% |
| Wells over the level / wells judged | 10 of 39 |
| Median | 0.03 mg/L |
| Years sampled | 1962–2026 |
| Wells | 39 |
| Test results | 455 |
| Wells left out | 24 |
| Sources | USGS (79), 21FLSWFD_WQX (28), 21FLGW_WQX (8) |
Manganese Recent
| Level it's compared with | 0.05 mg/L |
|---|---|
| Share of wells over the level | 2.6% |
| Wells over the level / wells judged | 1 of 39 |
| Median | 0.00112 mg/L |
| Years sampled | 1985–2026 |
| Wells | 39 |
| Test results | 363 |
| Wells left out | 24 |
| Sources | 21FLSWFD_WQX (28), 21FLGW_WQX (8), USGS (6) |
Hardness Recent
| Level it's compared with | none; hardness is shown in bands |
|---|---|
| Share of wells very hard | 34% |
| Median | 145.65 mg/L as CaCO₃ |
| Years sampled | 1962–2026 |
| Wells | 126 |
| Test results | 506 |
| Wells left out | 24 |
| Sources | USGS (90), 21FLSWFD_WQX (28), 21FLGW_WQX (8) |
Sulfate Recent
| Level it's compared with | 250 mg/L |
|---|---|
| Share of wells over the level | 5.3% |
| Wells over the level / wells judged | 7 of 131 |
| Median | 5.7 mg/L |
| Years sampled | 1962–2026 |
| Wells | 131 |
| Test results | 613 |
| Wells left out | 24 |
| Sources | USGS (95), 21FLSWFD_WQX (28), 21FLGW_WQX (8) |