The Shower That Was Added Later Is the One That Clogs in Groves

A shower that drains slowly is almost always a mat of hair and soap scum sitting a few inches inside the drain body, not a sewer problem. In Groves, a lot of compact refinery-era homes originally had only a tub, and a shower head was added later without changing the drain underneath, so the fixture now handles continuous shower flow through an opening and trap that were only ever sized and pitched for a tub filling and draining in batches. Pull the strainer and check the drain body first regardless, since it is still the fastest way to confirm whether hair is the actual cause.

Why this happens in Groves, TX

Groves is largely compact housing from the refinery build-out years, and it is common here for an original tub to have picked up a shower head at some point without the underlying drain being changed to match. Jefferson County's hard water is doing the usual work of binding soap residue to hair inside that drain, and a converted fixture carrying continuous shower flow through a tub-era trap simply has less margin before that buildup becomes noticeable. Groves sits in the Golden Triangle near Highway 73, and it took on floodwater during both Hurricane Harvey and Tropical Storm Imelda. Work that goes past the drain body and into the trap falls under the TSBPE's licensing rules for the trade.