Near 183rd Street and Pflumm Road, Johnson County Wastewater bid out roughly 5,800 linear feet of new sanitary sewer interceptor in 2025. The pipe runs from 8 to 42 inches in diameter, and the work includes tree clearing and 200 feet of hand-tunneled casing pipe. On August 21, 2025, the Board of County Commissioners authorized a contract with Site Rite Construction Co. for up to $3,046,422 to build the Blue River 28, Contract District 01 Sewer Main Extension. On August 10, 2026, Overland Park's Planning Commission took up the Falls at Wolf Creek Second Plat at the southeast corner of that same intersection. It's a 3.17-acre, R-1 residential plat from Graystone, LLC, and the staff report lists JCW sewer as available.
For anyone buying or selling an acreage home on a private septic system in this part of the county, that pipe matters more than the tank. The Johnson County Environmental Sanitary Code bars a new septic system on a lot when a public sewer line that can serve it is within 100 feet. Once sewer gets close, a failed resale inspection stops being a septic replacement and becomes a sewer connection, with a different price and a different set of contractors.
The permit doesn't survive the closing
Septic friction in Johnson County starts with a detail most buyers never see. The seller's permit to run the system doesn't pass to you. The 2025 code says a private sewage treatment system use permit lasts as long as the holder owns the system and runs it in compliance, and it "shall expire upon the transfer of the property to any other owner." Anyone who buys property served by a private system has to apply for their own use permit within 60 days of the purchase, and the system is subject to a JCDHE inspection as part of that permit.
So every septic sale in the covered area gets a county inspection eventually. The code covers all of Johnson County except De Soto, Gardner and Edgerton, which means Overland Park, Olathe and the unincorporated acreage between them are all included. What's left to decide is when the inspection happens and who has the leverage when it does.
The county's own pages describe the timing two ways. The main septic page calls the resale inspection "required to be completed prior to a property being bought or sold." The resale page and the code tie the requirement to the 60 days after purchase. The safest reading is that the legal deadline comes after closing and the smart time is before. The county itself advises sellers to schedule as far ahead of closing as possible so there's time for any required repairs. If no one orders it before closing, the buyer orders it as the new owner, and whatever it finds is theirs to fix.
Who orders the inspection changes the paperwork
Either side can order and pay for the resale inspection, according to Johnson County Department of Health and Environment. When the buyer orders it, the recording fee for the System Use Permit is included, and the permit is mailed to the buyer if the purchase goes through. When the seller orders it, the buyer still owes a recording fee and still has to get a System Use Permit after the transfer. The 2026 residential resale inspection application fee is $260, according to Johnson County Department of Health and Environment.
In practice, an inspection runs in this order:
- The application and fee go to the JCDHE Environment Division. Requests need about 8 hours' notice, and inspections are scheduled first come, first served.
- A licensed Johnson County sanitary disposal contractor pumps the tank, and the main opening has to be uncovered before the Environmental Health Specialist arrives.
- Someone has to let the specialist into the house to check every interior drain line and fixture.
- The visit usually takes about an hour and a half, and the report usually arrives within 48 hours.
- Any required repair needs a JCDHE permit and a JCDHE-licensed installer.
Step five is where location starts to matter.
The 100-foot rule
Here is the code's language on connecting to public wastewater systems:
No onsite wastewater system shall be permitted under this chapter whenever a public sewer system is within one hundred feet (100') of the property line unless JCDHE finds that connection to such a sewer is not feasible or is cost-prohibitive and an onsite wastewater system meeting the requirements of this code can be constructed on the property.
For existing systems, the code says no permit for construction or a "structurally significant alteration" will be issued for a lot within 100 feet of a main or lateral sewer line that can serve it, when connecting is feasible and reasonably available. For systems permitted under the current code, use is prohibited two years after a sewer line first becomes available within 100 feet. The Board of County Commissioners or another governing body, such as a city, can grant a waiver or more time when connecting would cause undue hardship.
That gives every inspection finding in the sewer-adjacent parts of southern Overland Park two possible outcomes. A minor repair stays a septic repair. A finding that calls for a new system or a major alteration, on a lot where sewer is close and connecting is feasible, sends the owner to Johnson County Wastewater.
New systems also face a minimum lot size of two acres for single-family homes, with a variance process in the code. An older home on less land than that has fewer options if its system fails, whether or not sewer is nearby.
What each outcome costs, in fees
The table below shows only published 2026 agency fees. Excavation, the installer's bill, and the private service line from the house to the main come on top, and none of the sources reviewed for this post gave a reliable local figure for them.
| If the inspection finds... | Path | Published fees |
|---|---|---|
| A minor issue | JCDHE minor repair permit | $80 |
| A need for a significant alteration, no sewer nearby | JCDHE alteration permit | $430 |
| A failed system, no sewer nearby | New system permit plus soil profile analysis | $480 plus $475 |
| A failed system, sewer within 100 feet and connection feasible | JCW sewer connection permit plus meter-based connection fee | $220 plus $4,850 for 5/8-inch, $7,280 for 3/4-inch, or $12,130 for 1-inch |
JCW also charges $38 per inspection trip. It will reimburse eligible homeowners up to $6,355 for qualifying restoration of paved public streets when private service-line work includes a septic-to-sewer connection. Because the connection fee scales with meter size, a large acreage home on a 1-inch meter pays more than double what a 5/8-inch meter pays.
Contract-district sewer extensions can also carry capital and user charges that apply to all land in the district. The Blue River 28 records reviewed here don't show the district boundary, the parcels it covers, or any per-lot charge. They also don't say whether the line was built for existing homes, new development, or both. No public construction status after the August 2025 award turned up either. The project shows where sewer infrastructure is heading, and it doesn't settle the question for any single parcel.
Confirming the distance before the offer
Public water doesn't mean public sewer. WaterOne supplies drinking water and Johnson County Wastewater handles sanitary sewer, so a WaterOne account says nothing about how the house disposes of wastewater. JCW asks owners to call to confirm whether a specific property is connected.
Basin-wide capacity is growing too. In April 2025 the county authorized up to $15,613,500 for Phase 2 improvements at the Blue River Main Wastewater Treatment Facility near 151st Street and Kenneth Road, which JCW describes as adding capacity for higher flows as communities in the Blue River basin grow. For a buyer, the questions to settle before the inspection contingency runs out are how far the nearest JCW main is from the property line and whether JCDHE would consider a connection feasible.
The well on the same timeline
Many of these properties also have a private well, and the same resale application handles it. JCDHE evaluates the well and water, and the buyer picks the test panel their lender requires. The options are nitrate plus total coliform for $72, nitrate, nitrite and total coliform for $108, or that panel plus lead for $177. Well inspections are scheduled Monday through Thursday, and testing visits happen by 9 a.m. A failed result means an assessment and repairs, a repair application, an $80 second site visit, and paid retesting. The county's grant-funded free well testing ended June 30, 2026, so sale-related tests now carry the fees above.
The repair grant window opens October 1
JCDHE has a Local Environmental Protection Program grant from the Kansas Department of Health and Environment to help homeowners repair or replace septic systems. Applications are reviewed October 1 through 15 for the award period ending June 30, 2027. Funding is 75%, 85% or 100% depending on household income relative to the 2025 federal poverty guidelines, with public health risk and application timing also considered. Applications go in person to the Environment Division at the Sunset Drive Building, 11811 S. Sunset Dr., Suite 2700, in Olathe. A seller who knows about a problem has two weeks, starting tomorrow, to apply under this cycle.
FAQ
Does a recent inspection from the seller carry over to me? The seller's use permit expires at transfer, and permits under the code can't be transferred. Even when the seller ordered the resale inspection, the buyer still pays a recording fee and gets their own System Use Permit.
Is there an exception if connecting to sewer would be very expensive? The code lets JCDHE allow an onsite system if connecting isn't feasible or is cost-prohibitive and a compliant system can be built. A governing body can also grant a hardship waiver or more time. Each case is decided individually, so get the answer in writing from the agencies.
How many homes does this affect? JCDHE counts about 9,000 private sewage treatment systems in Johnson County.
None of this is legal advice. For your specific parcel, confirm with JCDHE and JCW directly.
If you're weighing an acreage home on septic near 183rd and Pflumm or anywhere in the Blue River basin, Jamie Howell can help you time the resale inspection, confirm how far the nearest sewer main is, and price both outcomes before your contingency deadline. Schedule Your Free Consultation.
