Upper Blackstone Wastewater Treatment Plant

The address on the plant’s EPA facility record is 50 Route 20, Millbury, MA 01527, in Worcester County. Its coordinates are 42.2122, -71.7887. For some plants the record holds the utility’s mailing address rather than the plant gate.

Upper Blackstone Wastewater Treatment Plant treats an average of 30.02 MGD.

EPA's enforcement records list 4 formal civil enforcement cases naming Upper Blackstone Wastewater Treatment Plant, 0 since fiscal year 2020. The latest case reached its current status in May 2014 (administrative order, final order no penalty). Penalties assessed across the cases total $2,000. The full case history, with milestones, violation types and EPA's case summaries, is shown in Klarifi with a free account.

Klarifi has identified 12 treatment structures and unit processes at the Millbury facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

The facility discharges under NPDES permit MAR053209, currently expired, expiring February 2026.

Discharge monitoring reports show 19 violations at Upper Blackstone Wastewater Treatment Plant in the last three years, 19 of them effluent limit exceedances. The full history is available in Klarifi.

Upper Blackstone Wastewater Treatment Plant is a publicly owned treatment works in Millbury, Massachusetts. Klarifi lists 4 verified decision-maker contacts for this facility, available with a free trial.