Greater New Haven WPCA Sewage Overflows – Mill River Spill

Location: Hamden and New Haven, Connecticut | Status: Active

Summary: Poorly maintained sewage collection systems can fall into a state of disrepair that can result in chronic sewage spills, impacting the health of Connecticut residents and our shared environment. Save the Sound’s investigation of the pipe segment that failed and poured 2.1 million gallons of raw sewage from the Whitney Avenue Pressure Sewer into the Mill River flowing to Long Island Sound on July 6-7, 2020 revealed that the GNHWPCA knew of corrosion in the pipe since at least 2014. While GNHWPCA has historically had few sewage spills, the Mill River spill highlighted critical gaps in the routine maintenance and inspection programs that could likely result in future pollution if not resolved. Save the Sound filed a Clean Water Act citizen suit enforcement action on February 11, 2021 to ensure that this type of sewage spill is prevented in the future through a system of improved inspection and maintenance of large sewer pipes and follow-up on pipes compromised by corrosion in the GNHWPCA’s service area.

Latest Step: Defendant GNHWPCA filed its answer to Save the Sound’s complaint on April 29, 2021. Joint rule 26(f) report filed on June 21, 2021. Case transferred to Judge Sarah A. L. Merriam on October 14, 2021.

Next Step: Ongoing discovery and litigation preparation by the parties.

Further Reading:

Action Opportunities:

Last Updated: October 19, 2021

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