Well Water in Monroe County: What to Test and Why

High Risk
Testing Strongly Recommended 39 well tests on record

Why This Happens Here

Groundwater in Monroe County contains arsenic, chloride, and fluoride. Contaminant levels here are low and do not exceed federal health standards.

These contaminants come from the rock layers beneath the county. The Pennsylvanian-age sandstone and shale that hold the water naturally release small amounts of these elements over time as water sits in contact with the rock.

Groundwater in Monroe County is very hard, driven by elevated calcium and magnesium that dissolve from the rock. Moderate sulfate also appears in the water from minerals breaking down in the shale and sandstone. These characteristics are common across wells throughout the county.

What This Means for You

Good news: county wells in Monroe County show no contaminants exceeding EPA health standards. However, testing has found arsenic, chloride, and fluoride present in groundwater in this area. While these do not currently exceed federal limits in most wells, they are worth monitoring. Arsenic can build up in your body over time, and fluoride and chloride may affect some people with certain health conditions.

Wells in this county have very hard water, which causes white crusty scale buildup on pipes, fixtures, and inside appliances. You may notice staining on sinks and toilets from iron. This extreme hardness can shorten the lifespan of water heaters, dishwashers, and other appliances. The moderate sulfate levels may give your water a slightly bitter or off taste.

We recommend testing your well to know exactly what minerals and contaminants are in your water. Every well is different, and your well may have higher or lower levels than what is common in the county. Testing is the only way to know what you actually have so it can be properly treated if needed. A basic health screen typically costs $50-100, while a comprehensive metals and minerals panel runs $200-400. A whole-house softening system combined with sediment filtration can address the hardness and improve water quality.

Contaminant Detection Data

Contaminant Samples % Above MCL Distribution Confidence Risk
Arsenic 27 0%
Moderate Low
Chloride 37 0%
Moderate Low
Fluoride 17 0%
Moderate Low
HFPO-DA (GenX) ⓘ municipal 2 0%
Low Safe
Iron 35 0%
Moderate Low
Lead 23 0%
Moderate Low
Manganese 31 0%
Moderate Low
Nitrate 17 0%
Moderate Low
Nitrite 1 0%
Low Low
PFHxS ⓘ municipal 2 0%
Low Safe
PFNA ⓘ municipal 2 0%
Low Safe
PFOA ⓘ municipal 2 0%
Low Safe
PFOS ⓘ municipal 2 0%
Low Safe
Sulfate 2 0%
Low Low
Hardness 12
Low Low
PFBS ⓘ municipal 2
Low Safe
pH 11
Low Low
Sodium 37
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.

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