Groundwater in Fannin County contains chloride and fluoride, though contaminant levels here are low. No contaminants exceed EPA health standards in this county.
Chloride and fluoride reach groundwater through natural weathering of the crystalline rock that underlies this area. The granite and metamorphic rocks below Fannin County slowly break down and release these minerals into water that flows through fractures deep underground. This process is slow and keeps contamination limited because the rock itself does not store high concentrations of these elements.
Groundwater in this county is soft, with very low levels of hardness-forming minerals like calcium and magnesium. The crystalline bedrock here does not contain the limestone or dolomite that would dissolve and harden water the way carbonate rocks do in neighboring areas. Soft water with minimal mineral content is consistent across most wells in Fannin County.
Wells in Fannin County do not show contaminants exceeding EPA health standards based on county-level data. This is good news for your water supply.
Wells in this county have soft water with low mineral content. You should not experience staining from iron or manganese, scale buildup on fixtures, or problems with appliances wearing out early. The mineral levels are gentle on your home's plumbing and water heater.
We recommend testing your well to see what is actually in your water. Every well is different, and your water may have higher or lower levels than what is common in the county. Testing is the only way to know if your well needs treatment. A basic screening for bacteria and nitrate typically costs fifty to one hundred dollars. If concerns arise, a comprehensive metals and minerals panel runs two hundred to four hundred dollars, and carbon filters or other treatment systems can address specific issues.
| Contaminant | Samples ⓘ | % Above MCL ⓘ | Distribution ⓘ | Confidence ⓘ | Risk ⓘ |
|---|---|---|---|---|---|
| PFOS ⓘ municipal | 7 | 0% | Low | Safe ⓘ | |
| Sulfate | 2 | 0% | Low | Low ⓘ | |
| Nitrate | 2 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 7 | 0% | Low | Safe ⓘ | |
| Nitrate | 2 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 7 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 7 | 0% | Low | Safe ⓘ | |
| Sulfate | 2 | 0% | Low | Low ⓘ | |
| Hardness | 2 | — | Low | Low ⓘ | |
| PFBS ⓘ municipal | 7 | — | Low | Safe ⓘ | |
| 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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