Groundwater in Coke County contains sulfate, chloride, iron, fluoride, and manganese at levels that exceed EPA health standards. These contaminants are present at concerning concentrations that well owners should address.
The rocks beneath this county naturally contain high amounts of these minerals and salts. As water moves slowly through the ground over time, it dissolves sulfate, chloride, and iron from the rock layers, picking up these substances and carrying them into wells. The dry climate also means less fresh water moves through the soil to dilute what is already there.
Groundwater in this county is very hard, with extremely high levels of sulfate, sodium, and iron that define its mineral character. These minerals come from the local rock itself, which is naturally rich in salt and sulfur-bearing compounds that dissolve into the water. Wells across this county show these strong mineral characteristics consistently.
Wells in Coke County commonly have chloride, fluoride, iron, manganese, and sulfate at levels that exceed EPA health standards. Chloride and fluoride at elevated levels can affect kidney function and bone health, especially in children. Iron and manganese above safe limits can cause brain and nervous system problems with long-term exposure. Sulfate in high amounts can cause digestive issues and dehydration.
The extremely hard water in county wells causes stubborn staining on fixtures and dishes that regular cleaning does not remove. Scale builds up inside pipes and on appliances, shortening the lifespan of water heaters, dishwashers, and other equipment. The high mineral content also leaves a bitter or metallic taste and unpleasant odor in the water. Soap and shampoo do not lather well, leaving residue on skin and hair.
We recommend testing your well as soon as possible. Every well is different, and your water could have higher or lower levels than what is common in the county. A comprehensive metals and minerals panel costs between $200 and $400 and is the only way to know exactly what you are dealing with so you can get the right treatment. Water softeners, reverse osmosis systems, and point-of-use filters can address different concerns depending on your test results.
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 | 12 | 100% | Low | High | |
| Chloride | 42 | 76% | Moderate | High | |
| Iron | 24 | 38% | Moderate | High | |
| Manganese | 25 | 16% | Moderate | High | |
| Fluoride | 142 | 1% | High | Low | |
| Arsenic | 16 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| Lead | 16 | 0% | Moderate | Low | |
| Nitrate | 5 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 2 | 0% | Low | Low ⓘ | |
| PFNA ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| Uranium | 2 | 0% | Low | Low ⓘ | |
| Sodium | 12 | — | Low | Low | |
| pH | 12 | — | Low | Low | |
| PFBS ⓘ municipal | 2 | — | Low | Safe ⓘ | |
| Hardness | 12 | — | 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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