Your water comes from deep cracks and layers in old sandstone and shale rock. This rock formed long ago when seas covered Pennsylvania. Water fills the tiny spaces between the rock grains and moves slowly downward, collecting minerals along the way.
The rock layers in Warren County are thick and tightly packed. This means contaminants from the surface have a hard time reaching your water. The distance water must travel and the rock itself act as a natural filter that keeps your groundwater clean.
The water here is not especially hard, and no mineral problems show up in the testing data. You should not see staining, crusty buildup, or odd tastes from minerals in your taps. Your well water is straightforward and free from the mineral headaches that affect many nearby counties.
No contaminants have been detected in Warren County well water, and nothing exceeds EPA health standards. This is good news for your family's drinking water. However, county water data shows certain minerals are present at levels that warrant testing. You should still get your well tested to know what is actually in your water.
Without current test results for your specific well, you cannot see problems that have no taste or smell. Minerals like iron and sodium can build up over time and affect your pipes, fixtures, and appliances. Some minerals leave stains or scale that you will notice on sinks and laundry.
Get your well tested by a state-certified lab to find out exactly what minerals and contaminants are in your water. A basic health screen for bacteria and nitrate runs fifty to one hundred dollars. A comprehensive mineral and metals panel costs two hundred to four hundred dollars and gives you the full picture of your water quality.
| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Radon | 5 | 40% | 40% · 20% · 40% | Low | High ⓘ |
| Iron | 12 | 36% | 50% · 17% · 33% | Low | High |
| Lead | 36 | 6% | 89% · 6% · 6% | Moderate | Moderate |
| Chloride | 86 | 5% | 87% · 8% · 5% | Moderate | Moderate |
| Sulfate | 44 | 0% | 100% · 0% · 0% | Moderate | Low |
| Fluoride | 3 | 0% | 100% · 0% · 0% | Low | Low |
| Uranium | 2 | 0% | 100% · 0% · 0% | Low | Low |
| Nitrite | 10 | 0% | 90% · 10% · 0% | Low | Low |
| Fecal Coliform | 1 | — | — | Low | Safe |
| Arsenic | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| pH | 13 | — | — | Low | Low |
| Hardness | 1 | — | — | Low | Safe |
| Nitrate | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| E. coli | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Total Coliform | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Manganese | 1 | 0% | 100% · 0% · 0% | Low | Safe |
| Sodium | 77 | — | — | Moderate | Low |
MCL = Maximum Contaminant Level (EPA limit for public water; used as benchmark for private wells). Distribution shows % of sampled wells in each concentration band. Methodology.
Population-level CDC data. Not individual risk prediction.
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