Groundwater in Huron County contains iron, arsenic, manganese, and radon at levels that exceed EPA health standards, along with chloride and sulfate that also surpass safe drinking limits. These contaminant levels are serious and warrant immediate attention from well owners.
The bedrock beneath this county naturally releases these metals into groundwater. Iron and manganese dissolve when water sits in contact with the rock layers underground in low-oxygen conditions. Arsenic occurs naturally in the same formations. Chloride and sulfate are ancient minerals that have accumulated in these rock layers over time.
Groundwater in this county is very hard, driven primarily by high calcium and magnesium from the limestone and other rock formations below. The slow movement of groundwater through mineral-rich rock concentrations these hardness minerals along with elevated iron. These characteristics are common across wells throughout Huron County.
Wells in Huron County commonly contain arsenic, radon, and elevated chloride and sulfate--all at levels that exceed EPA health standards. Arsenic is a serious concern because long-term exposure can increase the risk of cancer and damage your kidneys, heart, and nervous system. Radon is a radioactive gas that builds up in your lungs over time and increases cancer risk. Chloride and sulfate at high levels can harm people with certain health conditions, including those watching their sodium intake or managing kidney disease.
The county's water is extremely hard, which means you will see white crusty buildup on faucets, showerheads, and fixtures. Iron stains sinks, toilets, and laundry a reddish-brown color. Very hard water can shorten the lifespan of water heaters, dishwashers, and other appliances by causing scale to build up inside them. You may also notice a metallic taste in the water or a rotten-egg smell from the sulfate.
We recommend testing your well because 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 so it can be properly treated. Because multiple analytes exceed health standards, a comprehensive metals and minerals panel is recommended--these typically cost $200-400. Treatment options like reverse osmosis systems or water softeners combined with iron removal 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 | 77 | 64% | Moderate | High | |
| Arsenic | 80 | 55% | Moderate | High | |
| Manganese | 75 | 37% | Moderate | High | |
| Sulfate | 75 | 23% | Moderate | High | |
| Chloride | 75 | 15% | Moderate | Moderate | |
| Radon | 33 | 9% | Moderate | Moderate ⓘ | |
| Fluoride | 75 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Lead | 53 | 0% | Moderate | Safe | |
| Nitrite | 41 | 0% | Moderate | Low | |
| PFHxS ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| PFNA ⓘ municipal | 9 | 0% | Low | Safe ⓘ | |
| PFOA ⓘ municipal | 13 | 0% | Low | Safe | |
| PFOS ⓘ municipal | 4 | 0% | Low | Safe ⓘ | |
| Uranium | 18 | 0% | Moderate | Low | |
| Nitrate | 43 | 0% | Moderate | Low | |
| Sodium | 75 | — | Moderate | Low | |
| pH | 91 | — | Moderate | Low | |
| PFBS ⓘ municipal | 4 | — | Low | Safe ⓘ | |
| Hardness | 75 | — | 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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