Rock Island Wastewater Treatment Plant

The address on the plant’s EPA facility record is 1299 Mill St, Rock Island, IL 61201, in Rock Island County. Its coordinates are 41.4995, -90.5973. For some plants the record holds the utility’s mailing address rather than the plant gate.

Rock Island Wastewater Treatment Plant treats an average of 4.29 MGD.

EPA's enforcement records list 3 formal civil enforcement cases naming Rock Island Wastewater Treatment Plant, 1 since fiscal year 2020. The latest case reached its current status in May 2025 (administrative order, final order no penalty). Penalties assessed across the cases total $64,800. The full case history, with milestones, violation types and EPA's case summaries, is shown in Klarifi with a free account.

Klarifi has identified 4 treatment structures and unit processes at the Rock Island facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

The facility discharges under NPDES permit ILL030783, currently effective, expiring December 2030.

Discharge monitoring reports show 1 violation at Rock Island Wastewater Treatment Plant in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

Rock Island Wastewater Treatment Plant is a publicly owned treatment works in Rock Island, Illinois. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.