Iron, manganese, and arsenic are present in Williams County groundwater and need attention. Arsenic, chloride, iron, and manganese all exceed EPA health standards, making this a serious concern.
These metals dissolve from rock deep underground where water sits in low-oxygen conditions for long periods. The rock itself naturally contains iron and manganese, and slow-moving groundwater pulls these metals into the water.
Groundwater in this county is very hard, with elevated calcium and magnesium from the local rock, plus high iron levels that add to the mineral content. These characteristics are widespread across wells in the county.
Wells in Williams County commonly have arsenic, chloride, iron, manganese, and sulfate at levels that exceed EPA health standards. Arsenic is a poison that increases cancer risk and can damage skin over many years of exposure. Manganese harms brain development in children and affects the nervous system in adults. Iron and chloride can damage kidneys with long-term exposure. Sulfate at these levels can cause digestive problems.
The water in this county is extremely hard, which causes thick white scale buildup on pipes and inside water heaters and dishwashers, shortening their lifespan. Iron stains sinks, toilets, and laundry orange or rust-colored. Manganese leaves dark brown or black stains. The water may taste metallic or bitter from the sulfate and mineral content.
We recommend testing your well 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 well so it can be properly treated. A comprehensive metals and minerals panel runs $200-400 and will tell you exactly what you are dealing with. Treatment options like water softeners combined with iron filters or reverse osmosis systems can address multiple contaminants 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 ⓘ |
|---|---|---|---|---|---|
| Iron | 160 | 94% | High | High | |
| Manganese | 155 | 12% | High | Moderate | |
| Sulfate | 103 | 7% | High | Moderate | |
| Arsenic | 79 | 5% | Moderate | Moderate | |
| Chloride | 159 | 3% | High |
Moderate
Elevated concentration, not % above limit
|
|
| Lead | 83 | 1% | Moderate | Low | |
| Fluoride | 137 | 0% | High | Low | |
| HFPO-DA (GenX) ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Nitrate | 49 | 0% | Moderate | Low | |
| Nitrite | 99 | 0% | Moderate | Low | |
| PFHxS ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFOS ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Radon | 6 | 0% | Low | Low ⓘ | |
| Uranium | 13 | 0% | Low | Low | |
| pH | 157 | — | High | Low | |
| Sodium | 160 | — | High | Low | |
| Total Coliform | 4* | 0% | Low | Low ⓘ | |
| E. coli | 4* | 0% | Low | Low ⓘ | |
| Hardness | 143 | — | High | Low | |
| PFBS ⓘ municipal | 4 | — | Low | Safe ⓘ |
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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