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Commissioner describes microbial pilot to reduce sewer clogs; city to seek continuation
Summary
Commissioner Landgraf reported a pilot program that injects microbes into main sewer lines to reduce fats, oils and grease buildup, saying the initiative began in April and the city will request continuation after positive early results; independent data were not included in the meeting record.
Commissioner Landgraf briefed the commission on a pilot sewer-maintenance program that injects bioengineered organisms into main sewer lines to digest fats, oils and grease and reduce blockages.
"Basically, bugs, bacteria into the system, and it actually eats up that stuff, and it's working," Landgraf said, describing the approach as an "eco friendly" solution and saying the county was consulted because treated flows reach the county wastewater facility. He reported the program began in April and the transcript reads that the city has authorized "9,200 hours" to date on the effort; the unit and figure come from the spoken record and may require confirmation from staff.
Landgraf said the pilot has reduced responses for clogs in high-volume manholes and that the administration will present a request to continue the program soon. The commission did not receive independent performance metrics at the meeting; the transcript reflects officials' statements of local observations.
