Haverhill Water Hardness & Quality Report (2026)

The Haverhill Water Department serves approximately 60,174 residents in Haverhill, Essex County, Massachusetts. The utility is located at 131 Amesbury Road and can be reached at 978-374-2385. Water is sourced from surface water in the Merrimack River watershed — a major river system draining forested and urbanized areas in Massachusetts and New Hampshire — and treated at facilities employing dissolved air flotation, filtration, and disinfection with hypochlorite. Annual Consumer Confidence Reports are published at haverhillma.gov, with the latest available for 2024.

The supply draws from the Merrimack River watershed, underlain by Avalonian terrane rocks — primarily Devonian and Carboniferous schists, gneisses, and granitic intrusions — with Quaternary glacial deposits adding sediment load. This geology imparts a hard character to the water through mineral leaching from carbonate-influenced glacial tills and weathering of mafic minerals, yielding elevated calcium and magnesium concentrations typical of northeastern Massachusetts surface supplies.

Hard water in Haverhill promotes scale buildup on faucets, showerheads, and inside pipes, water heaters, and dishwashers, reducing efficiency and lifespan. Laundry may appear dingy, and skin and hair feel dry with increased soap consumption. Regular vinegar descaling, installing sediment filters, and flushing water heaters are recommended maintenance steps; a whole-house water softener is commonly advised to remove calcium and magnesium and prevent damage. The utility reports a water quality score of 80/100 with testing covering 111+ parameters; 2 contaminants above EPA health guidelines were detected in monitoring, though the supply remains overall compliant.