Who pays for the sewer lateral: you or the city?

The owner pays only for the private service lateral on their side of the property line; SAWS owns and maintains the run from the main to the property line. The owner's responsibility runs to the property line. SAWS issues lateral permits and inspects the public side; the City of San Antonio inspects the private side. For blockages, SAWS reimburses locating costs when the problem turns out to be in the public right-of-way.

“A SAWS wastewater lateral is defined as the section of lateral from the wastewater main to the property line. A private service lateral (PSL) is the onsite extension… beginning at the property line and extending to the structure.” — SAWS Utility Service Regulations §10.2 (rev. Apr 2023), checked 2026-08-31.

The owner pays for the building lateral from the property line to the house; the city maintains the service connection from the main to the property line. The owner's responsibility runs to the property line. A connection permit is required and expires in one year (§49-24(b)).

“The city is responsible for maintenance of a service connection from the main to the meter… and from the main to the property line in the case of wastewater service.” — Dallas City Code ch. 49, §49-24(a)(1), checked 2026-08-31.

The owner pays for the private line on the house side of the cleanout that marks the limit of the public system; Houston Public Works is responsible for public pipes and those in the public right-of-way. The owner's responsibility runs to the cleanout at the right-of-way line. We could not locate an on-point residential maintenance-split section in the city code (ch. 47); this row rests on the utility's official page and the code section remains an open item.

“Problems with private wastewater pipes, which are typically closer to the home, are the responsibility of the homeowner. Problems with public pipes or those on a public right-of-way are the responsibility of Houston Public Works.” — Houston Public Works, “Protect Our Pipes” (official utility page), checked 2026-08-31.

The owner pays for the private lateral — the segment on private property; Austin Water is responsible for the system in the public right-of-way. The owner's responsibility runs to the property line. A plumbing permit is required through Austin Development Services — and Austin Water runs a Private Lateral Grant Program that covers repair or replacement for income-qualified owners.

“The owner of property containing a private lateral shall maintain the private lateral.” — Austin City Code §§15-11-2, 15-11-3, checked 2026-08-31.

The owner pays from the house to the street-side curb face — including the stretch under the sidewalk and planting strip; the city maintains curb face to main. The owner's responsibility runs to the curb face. A plumbing permit covers house-to-property-line work and a separate right-of-way permit covers the property-line-to-curb segment.

“…the City will maintain a lateral from the sewer main to the street-side curb face nearest the property being served.” — Portland City Code 17.32.070(B), checked 2026-08-31.

For homes of four or fewer units, the owner repairs the part on private property and the city repairs the part on public property, with four exceptions; larger buildings own the whole run to the main. The owner's responsibility runs to the property line (residential, ≤4 units). §11-16-030 requires a permit from the department of buildings before any sewer connection or drain work. The city-side duty has exceptions — owner negligence, failure within 3 years of a new connection, unapproved reuse, or a building vacant over 30 days.

“(A) The property owner shall be responsible for repairs to the part of the building sewer located on private property. (B) The department shall be responsible for repairs to the part of the building sewer located on public property.” — Municipal Code of Chicago §11-16-020(b), checked 2026-08-31.

The owner pays for the entire building sewer to the public main, even where it runs under public street; the city maintains only the mains. The owner's responsibility runs to the city main. Rule 2.17: no repair or replacement of a building sewer is allowed before a Sewer Inspection Permit is issued.

“The maintenance and protection of privately owned piping, including building sewers and fittings… whether located in or upon public or private property, is the exclusive responsibility of the owner thereof.” — Denver DOTI Rules PWRR-017.2 (2024), Rules 5.01 & 5.04, under DRMC ch. 56, checked 2026-08-31.

The owner pays for the whole service line from the building to the public main — right-of-way repairs included; KC Water maintains only public mains. The owner's responsibility runs to the city main. Repairs in the right-of-way or an easement require a KC Water permit, and repair work must be done by a licensed plumber.

“KC Water shall maintain all public mains. The property owner shall maintain all service lines from the main to the building.” — KC Water Rules & Regulations for Sewer Service Lines (May 2022), §3.06, checked 2026-08-31.

The owner pays for the entire sewer service lateral from the structure to the city main. The owner's responsibility runs to the city main. We could not locate the code section stating the split; this row rests on the city's own published answer and the code section remains an open item.

“The maintenance and repair of the entire sewer service lateral is the property owner's responsibility.” — City of Atlanta Dept. of Watershed Management, ATL311 article KB0013115 (official city page), checked 2026-08-31.

The owner pays for the entire lateral to the city main, including the wye connection under the street; the city is responsible only for the main. The owner's responsibility runs to the city main, including the wye. A permit is required to repair a sanitary lateral, and Minnesota law requires a Gopher State One Call locate before excavation.

“You own the line all the way to the City's main sewer, including the 'wye' (Y-shaped joint) where your line connects to the main pipe under the street.” — Minneapolis Public Works, “Private Sewer Lateral Repairs & Replacement” (updated Jan 2026), checked 2026-08-31.

The pipe that carries wastewater from your house to the city's sewer main, usually under the street. It typically has two parts: the upper lateral from the house to the property line or curb, and the lower lateral from there to the main. Which parts you own is a city-by-city rule — that is what the table above cites.

Usually not. In most US cities the municipal code makes the property owner responsible for the lateral even where it runs under public street — the city's responsibility starts at the main itself. But 'most' is not 'all', and the split point (property line, curb, or main) changes what a fair quote covers. Read your city's actual rule before accepting that the whole run is yours.

Search your city's municipal code (most are on municode.com or codelibrary.amlegal.com) for 'building sewer', 'sewer lateral' or 'private sewer', or call the public-works or wastewater utility and ask two questions: where does my responsibility end, and is a permit required to repair it? Get the answer with a code section number, not just a verbal yes.

Very often yes — most cities require a plumbing or public-way permit for lateral work, and repairs done without one can bite at resale. It is also a useful honesty check: a contractor who proposes to skip the permit is telling you something. Permit fees are public; ask to see them as a line item rather than folded into a round number.

Standard homeowners policies usually exclude wear-and-tear failure of buried service lines, which is why cities and utilities market separate service-line coverage. Whether that coverage is worth it is its own question — see our sewer line insurance page.