Arsenic, chloride, and E. coli have been detected in Patrick County groundwater. All contaminant levels remain below EPA health standards, indicating low concern for well owners.
The crystalline rock that makes up the Piedmont and Blue Ridge in this area naturally contains arsenic. Chloride can enter groundwater through road salt and septic systems. E. coli bacteria suggests occasional contamination from surface sources near some wells. The hard rock geology here limits how fast water moves underground, which slows the spread of contamination and allows some natural filtering to occur.
Groundwater in Patrick County is soft, with very low iron, sodium, and sulfate. The crystalline rock beneath the surface does not dissolve easily like limestone does, so it releases few minerals into the water. These soft-water characteristics are widespread across wells in the county.
Wells in Patrick County show some contaminants worth paying attention to. Arsenic, chloride, and bacteria have been detected in county groundwater at varying levels. Arsenic can cause skin problems and increase cancer risk with long-term exposure. Chloride at high levels can affect people with heart or kidney conditions. Bacteria like E. coli indicate contamination and can cause serious illness, especially in children and elderly people.
The good news is that Patrick County has soft water with low mineral content. Your water should not cause staining, scale buildup, or taste problems from minerals. Appliances like water heaters should not wear out early from hardness. The water quality overall should feel clean and not leave visible residue on fixtures.
Every well is different, and your well's water could be better or worse than what is common in the county. We recommend testing to find out what is actually in your water so you can treat it properly. A basic screening for bacteria and nitrate costs around fifty to one hundred dollars and is a good starting point. If you want a fuller picture, a comprehensive metals panel costs two hundred to four hundred dollars and checks for arsenic and other metals. Water filters and treatment systems can remove many of these contaminants.
Not sure if your well is affected? Get certified results in 5–7 days.
Test Your Well Water with Tap Score →| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| Sulfate | 3 | 0% | Low | Low ⓘ | |
| Nitrite | 1 | 0% | Low | Safe ⓘ | |
| Lead | 2 | 0% | Low | Safe ⓘ | |
| Chloride | 3 | 0% | Low | Low ⓘ | |
| Manganese | 1 | 0% | Low | Low ⓘ | |
| Arsenic | 1 | 0% | Low | Low ⓘ | |
| Nitrate | 2 | 0% | Low | Low ⓘ | |
| Fluoride | 3 | 0% | Low | Low ⓘ | |
| Iron | 2 | 0% | Low | Low ⓘ | |
| Hardness | 2 | — | Low | Low ⓘ | |
| pH | 2 | — | Low | Low ⓘ | |
| Sodium | 2 | — | Low | 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.
* Microbial contaminants (E. coli, coliform) reflect only samples from the last 10 years.
Data shows potential risk — a certified test confirms whether your water is affected.
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