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Phone: 1.508.755.1286,  Fax: 1.508.755.1289

Email us at cleanriver@ubwpad.org with any questions you may have.

50 Route 20, Millbury, MA 01527 (SouthWest Cutoff)

8:00 am. to 4:30 pm. EST

Welcome to the Upper Blackstone Water Pollution Abatement District. We are one of New England’s largest clean water treatment plants serving roughly 250,000 people in the greater Worcester area and managing biosolids for an additional 14 communities.

District member communities include the City of Worcester and the Towns of Auburn, Holden, Millbury, Rutland, West Boylston, and the Cherry Valley Sewer District (CVSD), a portion of the Town of Leicester.

The District serves our customers by providing a high level of wastewater treatment to effluent discharged near the headwaters of the Blackstone River in Millbury, Massachusetts.

The Blackstone River originates at the confluence of Middle River and Mill Brook in Worcester and flows southeast for 46 miles into Rhode Island where it joins the Seekonk and Providence Rivers, subsequently discharging to Narragansett Bay. The District’s stringent National Pollutant Discharge Elimination System (NPDES) permit limits are based on the water quality standards of both the River and Bay. To meet these standards, the District operates a biological nutrient removal (BNR) treatment process to reduce conventional pollutants as well as nitrogen, phosphorus, and metals.  

What’s New

Imagine a Day Without Water

2016 Operator of the Year Award

Plant Performance

In recognition of its outstanding compliance record in 2016, the District was selected for the Silver Peak Performance Award by the National Association of Clean Water Agencies (NACWA).