Greenlee County, AZ
These figures come from wells tested in Greenlee County, AZ, not from any one well.
- Sulfate is common in wells in Greenlee County, AZ (9 of 78 tested wells were over that level), so it's worth testing for.
- Iron and manganese are not common in wells in Greenlee County, AZ (0 of 56 and 2 of 57 tested wells were over). Only a test tells you about your own well.
- Wells in Greenlee County, AZ are typically hard (127 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:
- sulfate (common in wells here)
- iron
- manganese
- hardness
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. Arizona'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 | 0.0% |
| Wells over the level / wells judged | 0 of 56 |
| Median | < 0.2 mg/L |
| Years sampled | 1956–2014 |
| Wells | 56 |
| Test results | 204 |
| Wells left out | 1 |
| Sources | 21ARIZGW (51), AZDEQ_GW (44), USGS (34) |
More than half the wells had results below the lab's detection limit, so the median is reported as below that limit.
Manganese Recent
| Level it's compared with | 0.05 mg/L |
|---|---|
| Share of wells over the level | 3.5% |
| Wells over the level / wells judged | 2 of 57 |
| Median | < 0.05 mg/L |
| Years sampled | 1973–2014 |
| Wells | 57 |
| Test results | 188 |
| Wells left out | 1 |
| Sources | 21ARIZGW (51), AZDEQ_GW (44), USGS (19), AZDEQ_SW (1) |
More than half the wells had results below the lab's detection limit, so the median is reported as below that limit.
Hardness Recent
| Level it's compared with | none; hardness is shown in bands |
|---|---|
| Share of wells very hard | 39% |
| Median | 157 mg/L as CaCO₃ |
| Years sampled | 1952–2014 |
| Wells | 127 |
| Test results | 280 |
| Wells left out | 1 |
| Sources | 21ARIZGW (50), AZDEQ_GW (42), USGS (34), AZDEQ_SW (1) |
Sulfate Recent
| Level it's compared with | 250 mg/L |
|---|---|
| Share of wells over the level | 12% |
| Wells over the level / wells judged | 9 of 78 |
| Median | 71 mg/L |
| Years sampled | 1952–2014 |
| Wells | 78 |
| Test results | 133 |
| Wells left out | 0 |
| Sources | AZDEQ_GW (44), USGS (34) |