“We’re doing the study to find out how clean water is getting into the system,” Nettleton said. “Inflow is the flow getting into the system by sump pumps in basements. Infiltration is flow getting in through cracks in the pipes and leaking manholes.”
Nettleton noted that sump pumps, which are illegal in the town, are a “big problem” in Mystic. The problem is commonplace in many communities, officials said.
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