How a Four-Unit Rental's Kitchen Sinks Started Gurgling When the Washer Ran

https://www.mediafire.com/file/qjqnpmwfzwjzl79/pdf-59010-41365.pdf/file

It started as an odd kitchen sink gurgle on rainy nights. Then tenants noticed a splash in the laundry tub when the washing machine drained. Within three months the ground-floor tenant posted photos of a slow-draining sink and a foul smell