Name the five counties on the homepage, not on a buried service area page
Your first visitor question is whether you come to their address, and the answer should not require a click.
Middle Tennessee is not one market. Metro Nashville and Davidson County operate as a consolidated government while Williamson, Rutherford, Sumner and Wilson counties do not, and a visitor in Mount Juliet has no way to guess whether a Nashville company crosses the line.
Put the counties and the main towns in the visible part of the first screen. Franklin, Brentwood, Murfreesboro, Hendersonville, Mount Juliet, plus the Davidson neighborhoods you work most. Words, not a shaded map graphic that reads as decoration.
Say what you do in the same breath. Residential, commercial, emergency, replacement. A visitor should not have to infer from a hero photograph whether you handle a sewer line or only clean drains.
Then the phone number, as a tap target, at the top, on every page. Not in a hamburger menu, not below a video.