Why Laundry Backups Show Up in the Kitchen Sink
A washing machine discharges a large volume of water fast, so a partly blocked laundry line overflows the standpipe long before a slow sink would ever show a problem. That fast surge is why the laundry drain is often the first place a developing blockage announces itself.
In many Sun City West floor plans the laundry and kitchen share a single branch drain, which is why draining the washer can bubble up in the kitchen sink. Snaking a few feet at the standpipe misses the point when lint, detergent scale, and grease coat the full shared run. We clear the entire branch and confirm both the laundry and kitchen sides drain cleanly before we call it done.
