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City of Marlborough
Department of Public Works
135 Neil Street – Marlborough, MA 01752
Public Water Supply
# 2170000
Public Water System Facts
The City of Marlborough water system is regulated by the Massachusetts Department of Environmental Protection (MassDEP). MassDEP evaluates our system for its technical, financial, and managerial capacity to provide safe drinking water to you. To ensure that we provide the highest quality of water available, the City of Marlborough’s drinking water system is operated by Massachusetts Certified Distribution and Treatment Operators who oversee the operations of the system.
The Marlborough DPW Water Division maintains approximately 180 miles of water mains, more than 1500 fire hydrants, and 3 water storage tanks. We maintain the system through leak detection, repairs to water main breaks, water main replacements, water main flushing, maintaining and replacing hydrants, as well as responding to the needs and concerns of our residents. We conduct a thorough water sampling and testing program to meet all State and Federal requirements. We also maintain an active Cross Connection Control Program, continuously surveying (inspecting) facilities and testing devices to protect the water system from contamination.
100 percent of the drinking water for 2021 was supplied by the Massachusetts Water Resources Authority (MWRA). In 2021, the City of Marlborough used 1.433 billion gallons of water with an average of 3.927 million gallons a day.
The City of Marlborough Department of Public Works Water & Sewer Division had no violations of State and Federal regulations in 2021. The results of lead and copper testing required by the Lead and Copper Rule (LCR) are shown below. The 90th percentile levels for both lead and copper were well below their respective MassDEP Action Levels. We replaced about 244 lead services last year. The plan is to replace about 220 this year.
| 90th Percentile | Action Level | MCLG | # Of Sites Samples | # Of Sites Above Action Level | Possible Source Of Contamination | |
| Lead (ppb) | 11.5 | 15 | 0 | 30 | 0 | Corrosion of household plumbing systems |
| Copper (ppm) | 103 | 1300 | 1300 | 30 | 0 | Corrosion of household plumbing systems |
If you have any questions on this report or want to learn about public meetings related to your drinking water, please go to: https://www.marlborough-ma.gov or call (508) 624-6910.
Address: 135 Neil Street – Marlborough, MA 01752
Contact Person: Matthew Santella – Water and Sewer Division General Foreman
Telephone #: 508-624-6910 EXT: 33401
Email: msantella@marlborough-ma.gov Internet Address: www.marlborough-ma.gov
Updated June 14, 2022