Groundwater in Cattaraugus County contains manganese, radon, iron, and chloride at levels that exceed EPA health standards. These contaminant levels are serious enough to warrant testing and attention from well owners.
The rock beneath this county naturally releases manganese and iron into groundwater as water moves slowly through cracks and fractures in the bedrock. Radon seeps into the water from radioactive minerals in the rock layers. Chloride enters from road salt applied to local roads, which soaks into the ground and reaches the water below.
Groundwater in this county is moderately hard, with moderate iron levels that drive the water's mineral character. The rock composition here contains iron-bearing minerals that dissolve into water as it passes through, and the moderate hardness comes from calcium and magnesium in the bedrock. These characteristics are widespread across wells throughout the county.
Wells in Cattaraugus County commonly exceed EPA health standards for chloride, iron, manganese, and radon. Chloride at high levels can harm people with certain health conditions. Iron and manganese don't cause direct health problems but indicate water chemistry that needs attention. Radon is a radioactive gas that increases lung cancer risk when inhaled from water over many years.
County well water is moderately hard, which means you may notice some quality-of-life impacts. Iron can leave orange-brown stains on sinks, toilets, and laundry. Hard water can build up scale inside pipes and water heaters, shortening the lifespan of appliances like dishwashers and hot water tanks. Some people notice a metallic or bitter taste.
We recommend testing your well water because every well is different and yours may have higher or lower levels than what is common here. Testing is the only way to know what is actually in your water so it can be properly treated. A comprehensive metals and minerals panel typically costs between two hundred and four hundred dollars. Treatment options like water softening systems or point-of-use filters can address multiple concerns 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 ⓘ |
|---|---|---|---|---|---|
| Radon | 33 | 36% | Moderate | High ⓘ | |
| Manganese | 67 | 33% | Moderate | High | |
| Iron | 98 | 23% | Moderate | High | |
| Chloride | 133 | 1% | High | Low | |
| Arsenic | 38 | 0% | Moderate | Low | |
| Fluoride | 66 | 0% | Moderate | Low | |
| HFPO-DA (GenX) ⓘ municipal | 18 | 0% | Moderate | Safe | |
| Lead | 38 | 0% | Moderate | Low | |
| Nitrate | 84 | 0% | Moderate | Low | |
| Nitrite | 43 | 0% | Moderate | Low | |
| PFHxS ⓘ municipal | 18 | 0% | Moderate | Safe | |
| PFNA ⓘ municipal | 18 | 0% | Moderate | Safe | |
| PFOA ⓘ municipal | 18 | 0% | Moderate | Safe | |
| PFOS ⓘ municipal | 18 | 0% | Moderate | Safe | |
| Sulfate | 116 | 0% | High | Low | |
| Uranium | 26 | 0% | Moderate | Low | |
| Total Coliform | 14* | 0% | Low | Low | |
| Sodium | 97 | — | Moderate | Low | |
| pH | 131 | — | High | Low | |
| PFBS ⓘ municipal | 18 | — | Moderate | Low | |
| Hardness | 117 | — | High | Low | |
| Fecal Coliform | 14* | 0% | Low | Low | |
| E. coli | 14* | 0% | Low | 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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