I know it is a few years since the original posting, but I also wanted to weigh in on the structure. As said above, a catch basin takes water from your sinks, bath tubs, laundry and utility sinks. (This structure should never take human waste.) There should be a minimum of two pipes that are visible in a catch basin, although we owned a home in the 1200 block of W. Oakdale that also had a second
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