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Ridgefield Begins Dye Water Testing Of Sewer Lines

Ridgefield First Selectman Rudy Marconi says crews are testing for possible contamination of its sewage system by stormwater or groundwater.
Ridgefield First Selectman Rudy Marconi says crews are testing for possible contamination of its sewage system by stormwater or groundwater. Photo Credit: Contributed

RIDGEFIELD, CONN. -- Ridgefield is testing its sewer system for signs of contamination by stormwater or groundwater, according to First Selectman Rudy Marconi.

Marconi said the town will use dye to trace possible sources for a period of four to six weeks.

The community’s plant processes, on average, 700,000 to 800,000 gallons of sewage a day, Marconi said.

However, when it rains that number can spike to 4 million gallons, which, by state law, also must be treated.

In order to reduce the costs of sewer plant upgrades, the town is testing each sewer connection to make sure there are no gutters, catch basins, or sump pumps connected to the sewer system that should have a separate rainwater system, he said.

Testing will be conducted by the WPCA’s engineering consultant AECOM and subcontractor SDE Environmental Engineering from 8 a.m. to 4 p.m. Mondays through Thursdays, Marconi said.

The test involves putting dyed water into roof leaders, yard drains, and roof drains. Sanitary sewers and storm drains in the street will be opened and inspected for the biodegradable, non-toxic dye.

Testing team members will carry photo identification and a letter of authorization from the WPCA and the vehicles used by the field crews will have SDE’s logo and indicate that they are working for the town, Marconi said.

Tests will be conducted only when a property owner is present, he added, and all of the work will be conducted from outside the house.

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