Groundwater in Erie County contains iron, sulfate, lead, and manganese at levels that exceed EPA health standards. These contaminant levels are very high and warrant immediate attention from well owners.
The rock beneath Erie County naturally contains iron and manganese that dissolve into groundwater as water sits in contact with it over time. Sulfate comes from minerals in the rock layers, and lead can leach from pipes and natural deposits. The slow movement of water through cracks in the rock means these contaminants accumulate to concerning levels.
Groundwater in this county is very hard, driven by elevated calcium and magnesium from the rock, along with very high iron and sulfate concentrations. The limestone and related rock layers in this area release these minerals as water moves through them. These characteristics are widespread across wells throughout the county.
Wells in this county commonly have iron, lead, manganese, and sulfate at levels that exceed EPA health standards. Lead damages children's brain development and learning ability, even at low levels. Manganese can affect your nervous system over time. Iron and sulfate do not pose direct health risks, but they are part of the contamination picture here.
The water in Erie County is extremely hard, which means it leaves thick white crusty buildup on faucets, showerheads, and inside pipes. You will likely see orange or rust-colored staining on sinks, toilets, and laundry from the high iron content. The sulfate can give the water a bitter or unpleasant taste. This extreme hardness can shorten the lifespan of water heaters and dishwashers.
We recommend testing your well with a comprehensive panel to see exactly what is in your water, since 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 actually needs to be treated. A comprehensive metals and minerals panel typically costs $200 to $400. A water softener combined with iron filtration can address many of these issues, but testing first will tell you what your well specifically requires.
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 | 35 | 71% | Moderate | High | |
| Sulfate | 3 | 67% | Low | High ⓘ | |
| Lead | 32 | 3% | Moderate |
Moderate
Elevated concentration, not % above limit
|
|
| Manganese | 34 | 3% | Moderate | Low | |
| Arsenic | 35 | 0% | Moderate | Low | |
| Chloride | 34 | 0% | Moderate | Low | |
| Fluoride | 22 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 25 | 0% | Moderate | Safe | |
| Nitrate | 3 | 0% | Low | Low ⓘ | |
| Nitrite | 2 | 0% | Low | Low ⓘ | |
| PFHxS ⓘ municipal | 25 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 26 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 26 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 25 | 0% | Moderate | Safe | |
| Radon | 1 | 0% | Low | Low ⓘ | |
| Uranium | 1 | 0% | Low | Low ⓘ | |
| Hardness | 24 | — | Moderate | Low | |
| Sodium | 35 | — | Moderate | Low | |
| pH | 33 | — | Moderate | Low | |
| PFBS ⓘ municipal | 25 | — | Moderate | 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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