Groundwater in Defiance County contains iron, lead, and manganese at concerning levels that exceed EPA health standards. These contaminant levels are serious and require attention.
Iron and manganese dissolve naturally from the rock layers beneath the county. Lead enters groundwater through corrosion of old pipes and plumbing fixtures in wells and home systems. The mixed rock and soil composition in this area allows these metals to accumulate in water that moves slowly underground.
Groundwater in this county is very hard, with elevated iron, calcium, and magnesium that drive the water's character. The rock beneath the county naturally contains these minerals, and as groundwater sits in contact with it over time, the minerals dissolve into the water. These characteristics are common across most wells in Defiance County.
Wells in Defiance County commonly contain iron, lead, and manganese at levels that exceed EPA health standards. Lead exposure over time can harm children's brain development and cause learning problems. Iron and manganese are metals that build up in the body from long-term drinking water exposure, affecting various organs. These health concerns are serious enough to warrant testing your well water.
The mineral content in county wells creates noticeable quality-of-life problems. Iron stains sinks, toilets, bathtubs, and laundry orange or rust-colored. The water is extremely hard, leaving thick white crusty buildup on fixtures and in pipes. This extreme hardness can shorten the lifespan of water heaters and dishwashers. You may notice a metallic taste or sulfur-like odor in the water.
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. We suggest a comprehensive metals and minerals panel, which typically costs $200-400. Treatment options like a water softener combined with an iron filter can address multiple problems.
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 | 26 | 96% | Moderate | High | |
| Lead | 21 | 5% | Moderate |
Moderate
Elevated concentration, not % above limit
|
|
| Manganese | 22 | 5% | Moderate |
Moderate
Elevated concentration, not % above limit
|
|
| Arsenic | 25 | 0% | Moderate | Low | |
| Chloride | 25 | 0% | Moderate | Low | |
| Fluoride | 11 | 0% | Low | Low | |
| HFPO-DA (GenX) ⓘ municipal | 6 | 0% | Low | Safe ⓘ | |
| Nitrate | 5 | 0% | Low | Low ⓘ | |
| Nitrite | 3 | 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 ⓘ | |
| Sulfate | 4 | 0% | Low | Low ⓘ | |
| Uranium | 2 | 0% | Low | Safe ⓘ | |
| Sodium | 26 | — | Moderate | Low | |
| pH | 23 | — | Moderate | Low | |
| PFBS ⓘ municipal | 6 | — | Low | Safe ⓘ | |
| Hardness | 16 | — | 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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