Groundwater in Fulton County contains iron, manganese, nitrate, and sulfate at levels that exceed EPA health standards. These contaminant levels are concerning and require attention from well owners.
Iron, manganese, and nitrate dissolve naturally from the rock layers beneath the county. The bedrock here releases these metals and nutrients into the slow-moving groundwater as it sits in contact with the stone. Nitrate also enters from fertilizer and septic systems in areas with agricultural activity or older septic tanks.
Groundwater in Fulton County is very hard, driven by elevated calcium and magnesium from the limestone and mixed rock below. Iron concentration is very high and adds to the mineral load that builds up in pipes and appliances. These characteristics are widespread across most wells in the county.
Wells in Fulton County commonly contain iron, manganese, nitrate, and sulfate at levels that exceed EPA health standards. Iron and manganese are metals that can build up in your body over time and cause damage to your organs and nervous system. Manganese is especially harmful to children's brain development. Nitrate can interfere with how blood carries oxygen, which is particularly dangerous for infants and pregnant women. These contaminants pose serious health risks with long-term exposure.
The very high mineral content in county wells creates significant quality-of-life problems. Iron stains sinks, toilets, and laundry orange or rust-colored. Manganese leaves dark brown or black stains. The water is extremely hard, meaning thick white scale builds up inside pipes, water heaters, and dishwashers, which shortens their lifespan. You may notice a metallic taste or bitter flavor from the sulfate content.
We recommend testing your well as soon as possible because 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 what is actually in your water so it can be properly treated. Since multiple contaminants exceed health standards, a comprehensive metals and minerals panel is recommended, which typically costs $200-400. Treatment options like oxidation filtration systems combined with water softeners can address these concerns.
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 | 39 | 77% | Moderate | High | |
| Manganese | 35 | 40% | Moderate | High | |
| Nitrate | 10 | 30% | Low | High | |
| Sulfate | 15 | 27% | Moderate | High | |
| Arsenic | 38 | 0% | Moderate | Low | |
| Chloride | 41 | 0% | Moderate | Low | |
| Fluoride | 25 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 16 | 0% | Moderate | Safe | |
| Lead | 33 | 0% | Moderate | Low | |
| Nitrite | 6 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 16 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 16 | 0% | Moderate | Low | |
| PFOA ⓘ municipal | 16 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 16 | 0% | Moderate | Safe | |
| Sodium | 39 | — | Moderate | Low | |
| pH | 26 | — | Moderate | Low | |
| PFBS ⓘ municipal | 16 | — | Moderate | Low | |
| Hardness | 30 | — | 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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