Mon-Fri 8AM-6PM, Sat 9AM-2PM
LE
Lake EffectWater Filtration
Back to Blog
Well Water6 min readFebruary 8, 2026

Well Water in Monroe County: Testing & Treatment Guide

Private Wells in Monroe County: The Big Picture

Approximately 4,500 homes in Monroe County rely on private wells rather than municipal water supplied by the Rochester Water Authority. Wells draw water directly from underground aquifers and groundwater sources beneath the Genesee Valley and surrounding areas. Unlike municipal water systems, which are regulated by the EPA and tested regularly, private well water has no federal oversight. The responsibility for testing and treating well water falls entirely on the homeowner.

This is a significant point: your well water is not regularly tested by anyone unless you test it yourself. You won't receive a Consumer Confidence Report. No one is monitoring it for safety except you. This makes proactive testing essential for well owners.

Why Well Water Requires Different Oversight

Municipal water systems employ professional water treatment operators, conduct daily testing, and follow strict EPA standards. Well water owners have none of this infrastructure. Your well taps into local groundwater, which can be affected by nearby septic systems, agricultural practices, industrial contamination, geological factors, and other localized issues that vary dramatically from property to property.

Two wells a mile apart can have completely different water quality. One might be pristine and never need treatment. The other might have dangerous bacterial contamination. Only testing reveals your specific situation.

What You Should Test For

Essential Tests (Annual Minimum):

  • Bacteria (Total Coliforms and E. coli): The most important test. Coliform bacteria indicates contamination from sewage or animal waste, a serious health hazard. E. coli specifically indicates fecal contamination. If present, the water is not safe to drink until treated. The EPA requires well water to be free of coliforms.
  • Nitrates: Nitrates come from fertilizers, septic systems, and animal waste. High nitrate levels (above 10 ppm) are particularly dangerous for infants and pregnant women, causing a serious condition called methemoglobinemia. Nitrates also indicate potential bacterial contamination.
  • pH: Water pH affects corrosion, bacterial growth, and treatment effectiveness. Acidic well water (pH below 6.5) causes corrosion and can leach lead and copper from plumbing. Alkaline water (pH above 8.5) causes scale buildup.

Recommended Additional Tests (Every 3-5 Years):

  • Hardness (Calcium and Magnesium): Causes scale buildup and affects cleaning effectiveness. Common in Monroe County wells, especially in limestone areas.
  • Iron and Manganese: These metals cause staining and discoloration. While not immediately dangerous at low levels, high iron and manganese support bacterial growth and create taste/odor problems.
  • Arsenic: A naturally occurring element in some groundwater, particularly in certain geological areas. Chronic exposure increases cancer risk. The EPA limit is 10 ppb.
  • Lead and Copper: Less common in well water than municipal water (since there are no aging service lines), but possible if your plumbing is old or corroded. Test if your home was built before 1988 or if you notice blue-green staining.

Situational Tests (If Concerned):

  • Radon: Radioactive element that enters groundwater. Can accumulate in basements. Increasing concern in some Monroe County areas. The EPA action level is 4 pCi/L.
  • Pesticides and Herbicides: If your area has agricultural use nearby or if you use pesticides, testing may be warranted.
  • Sulfur (Hydrogen Sulfide): Causes rotten egg smell. Not immediately dangerous but indicates an environment that may support other contamination. Common in some Monroe County wells.

Testing Your Well Water

Monroe County Health Department offers well water testing at low cost ($20-50 for basic tests). New York State also provides a list of certified labs where you can send samples. Our team offers comprehensive well water testing that covers all essential and recommended parameters.

For bacteria and coliform testing, proper sampling is critical. Samples must be taken in sterile containers from a representative tap, and labs must receive them within specific timeframes. Many homeowners get inaccurate results because sampling procedures weren't followed correctly.

Common Well Water Issues in the Rochester/Finger Lakes Region

Bacterial Contamination: Most common in shallow wells and older wells with cracked casings. Particularly common in rural Monroe County properties near septic systems or former agricultural areas. Treatment: disinfection (chlorination) or UV plus a point-of-use filter for drinking water.

High Iron and Manganese: Very common in Monroe County's geological makeup. Causes orange/brown staining and metallic taste. Not immediately dangerous but affects water quality. Treatment: iron/manganese filters or whole-house oxidizing filters.

Hard Water: Common in limestone areas of Monroe County. While not a safety issue, causes scale buildup and cleaning problems. Treatment: water softeners or salt-free conditioners.

Acidic Water: Some Monroe County wells produce slightly acidic water, which causes corrosion. Treatment: pH correction systems that raise pH to neutral.

Naturally High Arsenic: Rare but occurs in specific geological zones in Monroe County. If present, requires serious treatment (reverse osmosis or ion exchange systems).

Treatment Options for Common Issues

For Bacterial Contamination: UV disinfection systems ($500-2,000) kill bacteria without chemicals. Chlorination systems add a small amount of chlorine continuously. For E. coli contamination, immediate boiling followed by shock chlorination of the well is necessary, plus professional water testing afterward.

For Iron and Manganese: Whole-house oxidizing filters ($1,000-3,000) remove these metals effectively. Maintenance involves occasional media replacement and backwashing.

For Hard Water: Water softeners ($1,200-2,500 installed) use salt-based ion exchange. Salt-free alternatives ($800-1,500) don't use salt but are less effective for severe hardness.

For Acidic Water: pH correction systems ($800-1,500) neutralize acidity by adding alkaline media. Essential before other filtration if water is very acidic.

Best Practices for Well Owners

  • Test annually minimum: At least for bacteria, nitrates, and pH. More comprehensive testing every 3-5 years.
  • Test after flooding or heavy rain: Groundwater can become contaminated during wet periods.
  • Test if neighbors report problems: If nearby wells are contaminated, yours may be too.
  • Maintain your well: Ensure the cap is secure, the area around the well head is clean, and the well is not close to septic systems or animal waste sources.
  • Have a professional install treatment systems: Well water treatment is more complex than municipal water treatment. Incorrect installation can create problems.

The Bottom Line for Monroe County Well Owners

Your well water might be perfectly safe, or it might have contamination you can't see, taste, or smell. The only way to know is testing. If you have a well on your Monroe County property, the first step is a comprehensive water test to establish a baseline of your water quality.

Our team has worked extensively with well owners in Monroe and Wayne counties. We understand the specific geological issues in this region and can recommend appropriate treatment systems for any contamination identified. We'll start with a professional well water test, show you the results, and recommend treatment options matched to your specific needs and budget.

Schedule a free comprehensive well water test today. Knowing what's in your water is the first step to protecting your family.

Ready to Know Your Water?

This article covers the "what" and "why"—but every home's water is unique. Our free in-home water test shows you exactly what's in YOUR water and recommends the right filtration solution for your situation.

Schedule Free Water Test