Groundwater in Perquimans County contains iron, manganese, and chloride at levels that exceed EPA health standards. These contaminants are present at concentrations serious enough to warrant attention from well owners.
This area sits on the Northern Atlantic Coastal Plain, where the underlying rock and soil naturally release iron and manganese into groundwater. Chloride enters from saltwater that has seeped inland from the ocean over time, mixing with the fresh groundwater below. These are natural processes tied to the county's coastal geography and rock composition.
Groundwater in this county is hard, driven by elevated calcium and magnesium from the rock below, and it carries very high iron and moderate sodium. The sandy and clay layers of the coastal plain naturally allow these minerals to dissolve and accumulate in the water. These characteristics appear across many wells in the county, though individual wells vary in exactly what they contain.
Groundwater in Perquimans County shows elevated levels of chloride, iron, manganese, and sulfate that exceed EPA health standards in many wells. Chloride at high levels can raise blood pressure, which is a concern for people with heart disease or those watching their sodium intake. Iron and manganese are metals that build up in the body over time and can affect the nervous system and organs. Sulfate can cause digestive problems like diarrhea, especially in infants and people with sensitive systems.
The mineral content in county wells creates noticeable household problems. High iron leaves rust-colored stains on sinks, toilets, and laundry that are hard to remove. The water may taste metallic or have an unpleasant odor. Hard water makes it difficult for soap to lather and leaves scale buildup inside pipes and water heaters, which can shorten the lifespan of appliances like dishwashers and water heaters.
Since every well is different and yours 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. We recommend a comprehensive metals and minerals panel, which typically costs between two hundred and four hundred dollars. Treatment options like iron removal systems or water softeners can address these issues once you know your specific water chemistry.
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 ⓘ |
|---|---|---|---|---|---|
| Iron | 27 | 70% | Moderate | High | |
| Manganese | 6 | 50% | Low | High ⓘ | |
| Chloride | 29 | 28% | Moderate | High | |
| Sulfate | 29 | 3% | Moderate |
Moderate
Elevated concentration, not % above limit
|
|
| Arsenic | 2 | 0% | Low | Safe ⓘ | |
| Fluoride | 29 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| Lead | 2 | 0% | Low | Low ⓘ | |
| Nitrate | 28 | 0% | Moderate | Low | |
| Nitrite | 5 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| Uranium | 2 | 0% | Low | Low ⓘ | |
| Hardness | 29 | — | Moderate | Low | |
| PFBS ⓘ municipal | 6 | — | Low | Safe ⓘ | |
| pH | 31 | — | Moderate | Low | |
| Sodium | 28 | — | 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.
* 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.
Order a Tap Score Test →Population-level CDC data. Not individual risk prediction.
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