Groundwater in Niagara County contains manganese, iron, chloride, sulfate, and radon at levels that exceed EPA health standards. These contaminants are present at concerning concentrations that well owners need to address.
The rock beneath this county naturally contains minerals like iron and manganese that dissolve into water as it moves through the ground. Sulfate and chloride come partly from those same minerals and partly from human activity like road salt and agricultural practices. This combination of geology and land use creates the contamination pattern you see in local wells.
Water in Niagara County is very hard, driven by high levels of iron and sulfate along with elevated calcium and magnesium from the bedrock. As water sits underground and flows slowly through these rocks over time, it picks up these dissolved minerals. These characteristics are widespread across wells throughout the county.
Wells in Niagara County commonly exceed EPA health standards for chloride, iron, manganese, radon, and sulfate. Radon is a radioactive gas that increases lung cancer risk when breathed in over time. Chloride at elevated levels can raise blood pressure in people who are sensitive to salt. Manganese affects how the nervous system develops and works, which is especially concerning for children. Iron and sulfate can cause digestive problems and other health issues at high levels.
The very hard water in this county leaves stubborn scale inside pipes and on fixtures. You will see orange or brown stains on sinks, toilets, and laundry from iron buildup. The water may taste bitter or have a rotten egg smell from sulfate and other minerals. Hard water also shortens the lifespan of water heaters, dishwashers, and washing machines because minerals clog them up.
We recommend a comprehensive water test for metals, minerals, and bacteria, which typically costs $200-400. Your well is unique and 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 you can treat it properly. Water softeners and whole-house filtration systems can help address many of these concerns depending on what your test shows.
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 ⓘ |
|---|---|---|---|---|---|
| Sulfate | 119 | 67% | High | High | |
| Lead | 25 | 64% | Moderate | High | |
| Iron | 60 | 62% | Moderate | High | |
| Manganese | 35 | 60% | Moderate | High | |
| Chloride | 159 | 22% | High | High | |
| Arsenic | 24 | 12% | Moderate | Moderate | |
| Nitrate | 44 | 2% | Moderate | Low | |
| Fluoride | 68 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 64 | 0% | Moderate | Safe | |
| Nitrite | 14 | 0% | Low | Low | |
| PFHxS ⓘ municipal | 64 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 64 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 64 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 64 | 0% | Moderate | Safe | |
| Radon | 4 | 0% | Low | Low ⓘ | |
| Uranium | 4 | 0% | Low | Low ⓘ | |
| Hardness | 119 | — | High | Low | |
| PFBS ⓘ municipal | 64 | — | Moderate | Safe | |
| pH | 139 | — | High | Low | |
| Sodium | 52 | — | 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.
Loading recent water news…