Who Owns My Sewer Line in Nashville? — Metro Code §15.40.050

Metro Code §15.40.050 states it without decoration:

Read the direction of that sentence carefully. From the public sewer main — the city's pipe, out in the street — to the structure served. Your house. The entire run between them is the owner's to own and to maintain: its clogs, its roots, its cracks, its collapse, its repair bills.

Metro Water Services says the same thing in its customer brochure, in plainer language than the code, and the brochure is worth quoting because it's the source every answer below is checked against:

And to the question every homeowner asks next — where does the Metro part of my line start? — the brochure's answer is three words long:

No competitor page in Nashville explains any of this. We checked. The silence is not an accident of the market; a homeowner who believes the city owns half the pipe is a homeowner who waits for the city while sewage stands in the shower. Know the rule, and you can act on the right problem at the right speed.

Ownership of the lateral doesn't mean every backup is yours. If the public main itself is blocked, wastewater backs up into the laterals connected to it — and that one genuinely is Metro's job. The tell is geography: if your neighbours on the same street are backing up at the same time, or sewage is surfacing outside, suspect the main before you suspect your pipe.

Metro Water Services runs a 24/7 line for exactly this: 615-862-4600, option 3 — and through hubNashville 311. Ask for the Sewer Main Clog Investigation. It's free, and it's the right first call when the street, not just your house, is involved. If the investigation clears the main, the problem is back in your lateral and it's yours — but you've established that on the city's time rather than your plumber's invoice. We tell people this on our own phone line too, at (615) 555-0134, even though it occasionally costs us a job. A company that bills you to clear your lateral when the main was blocked has charged you for the city's problem, and we'd rather not be that story in somebody's review.

Everything above is Metro Water Services territory. Two chunks of the area aren't. Madison and parts of the northeast sit in the Madison Suburban Utility District (MSUD) — 615-868-3201 — and the Harpeth Valley Utility District (HVUD) serves its own territory to the west. If your water bill doesn't say Metro, the numbers change: MWS's investigation line, the §15.40.050(B) relief sequence, and the brochure answers below belong to the Metro code, and your district has its own rules and its own phone tree. Our Madison page exists largely to hold that caveat where Madison readers will find it. Check the bill before you quote the code.

If there's one stretch of pipe that generates more owner-versus-city argument than all the rest combined, it's the last few feet — the segment where your line meets the main. A general-US forum case (a Terry Love thread, labeled as such — it's not a Nashville story) shows the shape of it: a homeowner had already replaced his failed Orangeburg line at his own expense, and the remaining problem was the clay segment right at the city connection, quoted a modest four-figure-at-most figure for five or six feet buried six to eight feet deep. A master plumber answering the thread added the part nobody had told the homeowner: that section usually falls under the city's engineering department rather than plumbing inspections, it sits in the right of way, and it needs an encroachment permit and specific insurance, with fill compacted to city requirements so the street doesn't sink. Nashville's version of that same boundary has its own local machinery — the (B) relief sequence above, the NDOT permit, the §15.12.040 tap permit — but the moral is identical on both sides of the state line: the connection segment is where "surely the city handles this part" goes to die, and it's the segment to ask your questions about before the dig, not during it.