Missouri Utility Connection Costs (2026): Tap Fees by City
Missouri’s two largest cities split water and sewer between different kinds of providers, and their published totals for a new single-family home are not close. Kansas City’s KC Water runs both utilities and charges $858.00 in published permit, tap, meter and sewer fees for a standard 3/4-inch service, with no water or sewer impact fee found in the documents we read. St. Louis splits the job between the Metropolitan St. Louis Sewer District (MSD) and the separate City of St. Louis Water Division, and its published charges run $1,251.00 to $1,551.00 depending on whether a sewer wye already exists at the lot. That St. Louis figure is incomplete: the Water Division’s own rules say the price of the water tap itself is fixed but not published anywhere, so a real St. Louis total will land higher once that number is added. Our database covers KC Water and the St. Louis Water Division/MSD so far. Other Missouri utilities are not yet collected, and we say so rather than guess.
Official fees in Missouri
The table below lists every verified Missouri fee row in our database, with utility, meter or tap size and a link to the source document. The two cities price connections in different ways. Kansas City bills a flat schedule of permit, tap, meter, meter-set and sewer connection charges that depend only on tap size and main pipe material. St. Louis bills a sewer connection fee and permit from MSD, plus a $50 water turn-on charge from the Water Division — and, separately, a water tap installation charge that exists but is not published, so it cannot appear as a dollar figure in this table.
| City | Provider | Water typical new home* | Sewer typical new home* |
|---|---|---|---|
| Kansas City | KC Water | $303 | — |
| St. Louis | Metropolitan St. Louis Sewer District (MSD) | — | $1,426 |
* Simplified sum of default official residential fees for a standard meter and one unit where applicable. Confirm your actual charges with the utility.
City comparison
Published one-time water + sewer charges for one new single-family home (sources: KC Water Rate Book FY 2027; MSD Connection Fees and City of St. Louis 2026 Water Rates).
| City | Case | Published total | Known gap |
|---|---|---|---|
| Kansas City (KC Water) | 3/4″ tap, iron main | $858.00 | None found — no impact or system development fee in the documents we read |
| Kansas City (KC Water) | 3/4″ tap, PVC main | $894.00 | Same as above |
| St. Louis (MSD + Water Division) | Existing sewer wye, water turn-on | $1,251.00 | Water tap installation cost is fixed but unpublished |
| St. Louis (MSD + Water Division) | No existing wye, new sewer tap, water turn-on | $1,551.00 | Same gap |
How the rows are built. Kansas City: $100 water service permit + $303 tap on an iron main + $239.50 meter (including the radio transmitter) + $73.50 meter set fee + $142 sewer connection and inspection fee = $858.00. On a PVC main the tap rises to $339, for $894.00. St. Louis: MSD’s $1,126.00 sewer connection fee + $75.00 connection permit + the Water Division’s $50.00 turn-on charge = $1,251.00 where a sewer wye already sits on the main. Where MSD has to cut a new tap, add MSD’s $300.00 tap fee for $1,551.00. Neither St. Louis figure includes the water tap itself: the Water Division’s Policies and Regulations for Small Service Connections (November 2025) says that cost is fixed but “available from the Tap Application Counter,” not published online or in the document. On paper, St. Louis’s published minimum is $393.00 higher than Kansas City’s total ($1,251.00 − $858.00) — and because that St. Louis number is missing a real charge, the actual gap between the two cities is almost certainly larger.
City pages with the full fee rows, worked examples and local caveats: Kansas City water and sewer tap fees and St. Louis water and MSD sewer tap fees.
What decides your number
- Which utilities serve the lot. Kansas City is one utility for both water and sewer. St. Louis City is two separate agencies — MSD for sewer, the Water Division for water — so a St. Louis address needs both agencies’ charges added together, and neither posts a single combined total.
- Whether a sewer wye already exists (St. Louis). MSD’s $300.00 tap fee applies only “if there is no existing wye on the public sewer at the location of the connection.” An older subdivision may already have one stubbed; an infill lot usually does not. MSD’s Engineering Department (314-768-6272) can tell you which case applies before you apply for a permit.
- Main pipe material (Kansas City). KC Water prices small taps by whether the main in the street is iron or PVC: a 3/4-inch tap is $303.00 on iron and $339.00 on PVC, a $36.00 difference that the permit desk (816-513-2174) can confirm.
- The unpublished St. Louis water tap price. This is the single biggest unknown on either city’s page. Call the Water Division’s Distribution office (314-633-9029) or visit the Tap Application Counter at 4600 McRee Ave. before budgeting a final St. Louis total — the number in this table is not the whole bill.
- Meter or tap size. Moving from a 3/4-inch to a 1-inch service in Kansas City adds $105.00 to $93.00 to the tap and meter charges depending on main material. St. Louis’s published fees do not vary by meter size, but its unpublished water tap cost may.
Frequently asked questions
How much are water and sewer tap fees in Missouri?
It depends entirely on the city. Kansas City’s KC Water publishes a complete total of $858.00 for a new home with a 3/4-inch tap on an iron main ($894.00 on PVC). St. Louis’s published MSD and Water Division charges run $1,251.00 to $1,551.00, but that figure leaves out the water tap installation cost, which the Water Division keeps unpublished.
Why is St. Louis’s tap fee total incomplete?
Because the City of St. Louis Water Division’s own regulations state that the installation cost for a water tap is fixed but available only from its Tap Application Counter, not published online or in any fee schedule we could read. The $1,251.00–$1,551.00 figure covers MSD’s sewer charges and the Water Division’s $50.00 turn-on fee only — it does not include that unpublished water tap price.
Does Missouri charge a statewide water or sewer impact fee?
No. Fees are set city by city, or by district. We found no water or sewer system development or impact charge in Kansas City’s rate book, city code or service line rules. St. Louis’s charges are connection, permit and turn-on fees, not capacity or impact fees, in the documents we could verify.
Why is Kansas City’s total so much lower than other cities in our database?
KC Water’s published charges cover only the permit, the physical tap, the meter and a sewer connection and inspection fee — there is no capacity, impact or system development fee layered on top, unlike many cities in states such as North Carolina or Colorado. That keeps Kansas City’s official total under $1,000, among the lowest complete figures we’ve verified anywhere.
Related pages
Other state hubs: Arkansas, Kentucky, Tennessee and Colorado. Nearby cities: Oklahoma City, OK, Omaha, NE and Wichita, KS. Guides: tap fee vs. impact fee, cost to bring utilities to land, utility costs for new construction and tap fees by city.
Sources
- KC Water Rate Book FY 2027 (rates effective May 1, 2026), City Code Sections 78-24, 78-25 and 78-28, KC Water. Checked Sep 24, 2026.
- Rules and Regulations for Water Service Lines 2026 (May 2026), KC Water. Checked Sep 24, 2026.
- Rules and Regulations for Sewer Service Lines 2026, KC Water. Checked Sep 24, 2026.
- 2026 Water Rates (rates effective July 1, 2026), City of St. Louis Water Division. Checked Sep 25, 2026.
- Policies and Regulations for Small Service Connections (November 2025), Section 5.0, City of St. Louis Water Division. Checked Sep 25, 2026.
- Connection Fees, effective Feb. 1, 2018 (MSD Ordinance No. 14854), Metropolitan St. Louis Sewer District. Checked Sep 25, 2026.
- Frequently Asked Questions — How do I connect my house to the public sewer?, Metropolitan St. Louis Sewer District. Checked Sep 25, 2026.