Amsterdam Water Hardness & Quality Report (2026)

The City of Amsterdam, New York is served by the Amsterdam Board of Water Commissioners (also known as the Amsterdam (C) water utility), which operates three impounding reservoirs at the foothills of the Adirondack Mountains in Saratoga County. The utility serves approximately 18,000 residents in Montgomery County, meeting EPA legal requirements, with the primary contact at 518-841-4301 and a 24/7 emergency line at 518-842-1100; the mailing address is 61 Church Street, City Hall, Amsterdam, NY 12010. PFAS monitoring is on record with no compounds currently above EPA health-based guidelines; the utility has reported 2 contaminants above MCLGs though no current MCL violations are on record.

The Mohawk Valley watershed supplies Amsterdam's water through its three reservoirs drawing from the Adirondack Mountains foothills in Saratoga County. The region's geology is dominated by limestone bedrock characteristic of the Mohawk Valley, which dissolves calcium and magnesium minerals into the water supply as it percolates through the catchment and is stored in the reservoirs. This limestone-influenced geology produces a moderately hard water supply typical of the Mohawk Valley's geological composition.

At the moderately hard classification, Amsterdam residents experience scale buildup in water heaters and appliances, increased detergent consumption, and estimated annual costs of $1,380–$2,030 in water heater inefficiency and appliance repairs. Showers and baths expose residents to higher concentrations of dissolved minerals than drinking water alone. A water softener is recommended for households seeking to reduce mineral-related damage and improve appliance longevity. Testing has identified total trihalomethanes (TTHMs) and six additional chemicals throughout the distribution system; TTHMs form when chlorine disinfectant reacts with organic matter in source water.