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Iowa DNR issues proposed consent order after Dubuque self‑reported wastewater permit violations; council approves settlement
Summary
After 72 self‑reported NPDES effluent permit exceedances from 2020–2024, the Iowa Department of Natural Resources proposed an administrative consent order with a $7,000 penalty; the council approved the order and staff outlined corrective actions and capital projects to reduce future violations.
The Dubuque City Council on Monday approved by unanimous vote an administrative consent order from the Iowa Department of Natural Resources that follows self‑reported wastewater permit violations at the Water and Resource Recovery Center between 2020 and 2024.
Water and Resource Recovery Center Director Darren Mearing told the council the city self‑reported a total of 72 permit violations over that five‑year span. Many of the exceedances stemmed from two principal causes: biological instability linked to filamentous bacteria beginning in 2022 and a contractor error in 2023 that left the facility boiler inoperable for several weeks, reducing digester…
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