Harrison County, MS
These figures come from wells tested in Harrison County, MS, not from any one well.
- Manganese is common in wells in Harrison County, MS (24 of 128 tested wells were over that level), so it's worth testing for.
- Iron and sulfate are not common in wells in Harrison County, MS (9 of 128 and 0 of 225 tested wells were over). Only a test tells you about your own well.
- Wells in Harrison County, MS are typically soft (216 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:
- manganese (common in wells here)
- iron
- 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. Mississippi'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 | 7.0% |
| Wells over the level / wells judged | 9 of 128 |
| Median | 0.008525 mg/L |
| Years sampled | 1919–2015 |
| Wells | 128 |
| Test results | 790 |
| Wells left out | 0 |
| Sources | USGS (308) |
Manganese Recent
| Level it's compared with | 0.05 mg/L |
|---|---|
| Share of wells over the level | 19% |
| Wells over the level / wells judged | 24 of 128 |
| Median | 0.012125 mg/L |
| Years sampled | 1951–2015 |
| Wells | 128 |
| Test results | 541 |
| Wells left out | 0 |
| Sources | USGS (224) |
Hardness Older tests
| Level it's compared with | none; hardness is shown in bands |
|---|---|
| Share of wells very hard | 1.4% |
| Median | 4.18 mg/L as CaCO₃ |
| Years sampled | 1919–2013 |
| Wells | 216 |
| Test results | 419 |
| Wells left out | 0 |
| Sources | USGS (216) |
Sulfate Older tests
| Level it's compared with | 250 mg/L |
|---|---|
| Share of wells over the level | 0.0% |
| Wells over the level / wells judged | 0 of 225 |
| Median | 8.3 mg/L |
| Years sampled | 1919–2013 |
| Wells | 225 |
| Test results | 431 |
| Wells left out | 0 |
| Sources | USGS (225) |