Greene County, NC
These figures come from wells tested in Greene County, NC, not from any one well.
- Iron is common in wells in Greene County, NC (26 of 65 tested wells were over that level), so it's worth testing for.
- Manganese is common in wells in Greene County, NC (19 of 48 tested wells were over that level), so it's worth testing for.
- Sulfate is not common in wells in Greene County, NC (0 of 85 tested wells were over). Only a test tells you about your own well.
- Wells in Greene County, NC are typically soft (85 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 (common in wells here)
- 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. North Carolina'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 | 40% |
| Wells over the level / wells judged | 26 of 65 |
| Median | 0.105 mg/L |
| Years sampled | 1943–2023 |
| Wells | 65 |
| Test results | 302 |
| Wells left out | 6 |
| Sources | USGS (80) |
Manganese Recent
| Level it's compared with | 0.05 mg/L |
|---|---|
| Share of wells over the level | 40% |
| Wells over the level / wells judged | 19 of 48 |
| Median | 0.04275 mg/L |
| Years sampled | 1947–2023 |
| Wells | 48 |
| Test results | 187 |
| Wells left out | 6 |
| Sources | USGS (61) |
Hardness Recent
| Level it's compared with | none; hardness is shown in bands |
|---|---|
| Share of wells very hard | 3.5% |
| Median | 52.8 mg/L as CaCO₃ |
| Years sampled | 1943–2023 |
| Wells | 85 |
| Test results | 268 |
| Wells left out | 6 |
| Sources | USGS (85) |
Sulfate Recent
| Level it's compared with | 250 mg/L |
|---|---|
| Share of wells over the level | 0.0% |
| Wells over the level / wells judged | 0 of 85 |
| Median | 9 mg/L |
| Years sampled | 1943–2023 |
| Wells | 85 |
| Test results | 286 |
| Wells left out | 6 |
| Sources | USGS (85) |