Who Owns the Sewer Line From My House? Overland Park, Lenexa, Olathe and Stilwell
By FlowRight Plumbing of Overland Park · · Sources linked in each section
Short answer: you do. In every city we serve, the pipe that carries wastewater from your house to the public sewer main, called the service lateral or building sewer, is private property, and the homeowner is responsible for maintaining, repairing and replacing it. The details that change from place to place are where it ends, who you call before digging, and what help is available.
Overland Park and Lenexa (Johnson County Wastewater)
In the Johnson County Wastewater (JCW) service area, which includes Overland Park and Lenexa, the service lateral from your house to the public main is private property. The homeowner is responsible for maintaining, repairing and replacing it, including its connection point on the public main. JCW asks that you or your plumber call JCW at 913-715-8520 before a lateral is repaired or replaced.
JCW states that it does not repair or maintain private service lines and connections. In other words, the tap where your lateral meets the main is also yours, which matters when a repair reaches the street.
Sources: Johnson County Wastewater: Frequently Asked Questions; Johnson County Wastewater: Roots in Lateral Program. Checked October 2026.
Olathe
In Olathe, Municipal Code 13.05.010 defines the sanitary sewer service line as running from the building to and including the connection to the public main, maintained by the property owner. The city does not locate private sewer service lines, so they won’t be marked by an 811 request.
Some Olathe addresses are in the JCW service area instead; JCW asks Olathe residents to call 913-715-8520 to confirm. The ownership answer is the same either way.
Sources: Olathe Municipal Code 13.05.010 (definitions: service lines); City of Olathe: Utility Location Services; Johnson County Wastewater: Frequently Asked Questions. Checked October 2026.
Stilwell and unincorporated Johnson County
Some homes around Stilwell are on public sewer and some are on private septic systems. Johnson County has roughly 9,000 private sewage systems, permitted and regulated by the county’s Department of Health and Environment (JCDHE). If you’re on septic, the whole system is yours. See our Stilwell guide.
Source: Johnson County Department of Health and Environment: residential septic systems. Checked October 2026.
Programs that can help with the cost
- Street Restoration Program (JCW): if your private lateral runs under a paved public street and needs repair or replacement, or you’re converting from septic to sewer, JCW reimburses up to $6,355 per single-family property for restoring the street. A permit is required; lateral work must meet JCW inspection standards and street work must meet city standards (details).
- Backup Prevention Program (JCW): for JCW customers who had a confirmed basement sewer backup caused by capacity problems in the public sewer during an intense rain. Approved homes can get funding for a backup prevention device or plumbing modifications, paid directly to the plumber or reimbursed (eligibility).
- JoCo Inflow (JCW): a voluntary program that finds sump pumps, downspouts, area drains, uncapped cleanouts and foundation drains connected to the sanitary sewer, with no out-of-pocket cost to the homeowner. Questions: 913-715-8550 (how it works).
Sources: Johnson County Wastewater: Street Restoration Program; Johnson County Wastewater: Backup Prevention Program; Johnson County Wastewater: JoCo Inflow. Checked October 2026.
Before a lateral is repaired
- Get a camera inspection so the repair is sized to the actual defect: one bad joint, a belly, or a line at the end of its life
- Call JCW at 913-715-8520 (JCW areas), as JCW requests, or the City of Olathe for city sewer
- Call 811 so public utilities are marked; your private lines generally won’t be
- Expect a permit: replacing pipe is new work under Overland Park’s code, and street work needs a city right-of-way permit
- Ask your insurer whether you have service-line coverage; many standard policies don’t cover the lateral
Sources: Johnson County Wastewater: Frequently Asked Questions; Overland Park Ordinance BC-3499 (2024 International Codes, effective July 1, 2026). Checked October 2026.
How old is the lateral under your yard?
It depends heavily on where you live. Census estimates show Overland Park’s median home dates to 1989, Olathe’s to 1994 and Lenexa’s to 1992, but individual ZIP codes range from the 1960s to the late 2000s. Older laterals are more likely to be clay or cast iron with joints that roots can enter; newer ones are usually PVC. JCW notes that roots in laterals typically come from small cracks and breaks caused by age and soil compaction.
| ZIP | Area (approx.) | Median year built | 2000 or later | 1980–1999 | 1960–1979 | Before 1960 |
|---|---|---|---|---|---|---|
| 66204 | North Overland Park (Downtown OP area) | 1965 | 15.3% | 13.9% | 30% | 40.8% |
| 66212 | Central-north Overland Park | 1970 | 6.7% | 19.5% | 57.3% | 16.5% |
| 66215 | Lenexa (east) and west Overland Park | 1982 | 18.7% | 35.5% | 41.2% | 4.5% |
| 66210 | Overland Park (College Blvd corridor) | 1986 | 16.7% | 59.3% | 21.6% | 2.5% |
| 66213 | South-central Overland Park | 1995 | 29.5% | 64.4% | 4.2% | 1.8% |
| 66062 | Olathe (east and south) | 1994 | 34.7% | 46.1% | 17.3% | 1.9% |
| 66061 | Olathe (north and west) | 1994 | 41.6% | 26.6% | 21.4% | 10.4% |
| 66219 | Lenexa (central) | 2000 | 49.3% | 42.7% | 3.8% | 4.2% |
| 66223 | South Overland Park | 2001 | 52.1% | 45.4% | 2% | 0.4% |
| 66221 | South Overland Park (our base) | 2007 | 73% | 21.4% | 2.8% | 2.8% |
| 66085 | Stilwell and far south Overland Park | 2002 | 53.3% | 24.3% | 18% | 4.4% |
Sources: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, tables B25034 and B25035 (via Census Reporter); Johnson County Wastewater: Roots in Lateral Program. Checked October 2026.
Frequently asked questions
Who is responsible for the sewer line from my house to the street in Overland Park?
The homeowner. JCW treats the service lateral as private property, including its connection point on the public main, and does not repair private service lines.
Is it the same in Olathe?
Yes. Olathe’s municipal code defines the sanitary sewer service line as running from the building to and including the connection to the public main, maintained by the property owner.
Does JCW help pay for sewer line repairs?
Not for the lateral itself, but JCW’s Street Restoration Program reimburses up to $6,355 for restoring a paved public street over a qualifying lateral repair, and the Backup Prevention Program can fund backup prevention for eligible homes.
Who do I call if sewage backs up into my basement?
A plumber can diagnose it. In JCW areas, if the main drain or several fixtures back up at once it may be a sewer backup, and JCW takes calls at 913-715-8600.
Is my sump pump allowed to drain into the sewer?
No. JCW says connecting a sump pump or any groundwater source to the sanitary sewer is against code under Resolution WD 92-22.
Related pages
Need a plumber today?
Call (913) 379-3324 or book online. Open 7 days, 7 AM–8 PM.