Branch County groundwater contains manganese, iron, and chloride that well owners need to be aware of. These contaminant levels exceed EPA health standards and are concerning enough to require action.
The rock beneath Branch County naturally releases manganese and iron when groundwater sits in low-oxygen zones underground. Chloride enters from road salt applied to highways and parking lots that seeps down into the water table. The mixed composition of rock layers here does not filter these contaminants out as water moves slowly through the ground.
Groundwater in this county is very hard, with elevated calcium and magnesium from the limestone and rock below, along with high iron that adds to the mineral load. These minerals concentrate in the water because they dissolve naturally from the rock as groundwater passes through it over time. Most wells across Branch County show these hard-water and elevated-iron characteristics.
Wells in Branch County commonly contain chloride, iron, manganese, and sulfate at levels that exceed EPA health standards. Chloride and sulfate can affect kidney function and digestive health over time. Manganese is especially concerning because it can harm brain development in children and affect nervous system function in adults. Iron and manganese are metals that build up in the body with long-term exposure.
The water in this county is very hard, which causes visible problems in daily life. Iron leaves orange or rust-colored stains on sinks, toilets, and laundry. Manganese causes dark brown or black staining on fixtures. Hard water also builds up as crusty white scale inside pipes and on appliances. This mineral buildup can shorten the lifespan of water heaters and dishwashers.
We recommend testing your well to learn what is actually in your water, since every well is different and your levels may be higher or lower than what is common in the county. Testing is the only way to know what needs treatment. A comprehensive metals and minerals panel typically costs $200-400 and will identify all the contaminants present. Treatment options like oxidation filters combined with water softening can address these issues.
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 ⓘ |
|---|---|---|---|---|---|
| Manganese | 17 | 65% | Moderate | High | |
| Iron | 18 | 44% | Moderate | High | |
| Sulfate | 20 | 5% | Moderate | Moderate | |
| Chloride | 20 | 5% | Moderate | Moderate | |
| Arsenic | 7 | 0% | Low | Low ⓘ | |
| Fluoride | 17 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| Lead | 8 | 0% | Low | Low ⓘ | |
| Nitrite | 21 | 0% | Moderate | Low | |
| PFHxS ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 2 | 0% | Low | Safe ⓘ | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Nitrate | 23 | 0% | Moderate | Low | |
| Sodium | 17 | — | Moderate | Low | |
| pH | 23 | — | Moderate | Low | |
| PFBS ⓘ municipal | 2 | — | Low | Safe ⓘ | |
| Hardness | 20 | — | 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.
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