Groundwater in Coke County contains sulfate, chloride, iron, and manganese, with additional concerns from fluoride. Multiple of these contaminants exceed EPA health standards, making them a serious concern for well owners.
The rock beneath this county naturally holds high salt content and minerals that dissolve into groundwater as water moves through the layers. This is not pollution from human activity--it comes from the rock itself and from saltwater deeper underground that mixes upward into drinking water zones.
Groundwater in this county is very hard, with extremely elevated sulfate, sodium, and iron driving that character. These minerals concentrate in the groundwater because water stays in contact with mineral-rich rock for long periods, allowing dissolving to occur. Wells across Coke County show these same mineral characteristics.
Wells in Coke County contain 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. Iron and manganese can cause neurological problems, especially in children. These contaminants pose real health risks to your family.
The extremely hard water in this county will shorten the lifespan of water heaters, dishwashers, and other appliances. You will see stubborn reddish or brownish staining on fixtures and laundry. Scale buildup inside pipes and appliances is common. The water may taste metallic or have a rotten egg smell from sulfate.
Every well is different, and your well may have higher or lower levels than what is common in the county. Testing is the only way to know what is actually in your water so it can be properly treated. We recommend a comprehensive metals and minerals panel, which typically costs $200 to $400. Treatment options like reverse osmosis systems or water softeners can address multiple concerns at once.
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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