12-inch connection to existing main cost in Illinois
Updated · BuildGets Team
Public bids in Illinois put the 12-inch connection to existing main at a median of $5,911 each, with the middle half of bids between $5,238 and $10,375. That is 17 % below the national median of $7,100. Based on 14 bidder prices from 3 public bid tabulations opened between December 2022 and June 2025.
| Median bid in Illinois | $5,911 / EA |
| Middle 50 % of bids | $5,238 – $10,375 |
| National median | $7,100 (-17 %) |
| Bidder prices · bid tabs · owners | 14 · 3 · 1 |
Bid tabs in Illinois
| Owner | Bid opening | Low bid | Median of bids | Bids |
|---|---|---|---|---|
| Kings Road Watermain | Jun 2025 | $13,125 | 2 | |
| Lake Marian Woods Watermain Replacement | Jun 2023 | $5,821 | 7 | |
| 2022 LINCOLNWOOD MANOR RECONSTRUCTION | Dec 2022 | $5,450 | 5 |
Prices are what contractors bid on public jobs in Illinois, not installed costs from a price book. What each item includes varies by owner: read the item description in each bid tab before comparing. National figure and every state: 12-inch connection to existing main unit price. Every unit price in Illinois: Illinois unit prices.
Cite as: BuildGets BID, 12-inch connection to existing main cost in Illinois, October 2026. https://www.buildgets.com/us/unit-prices/12-inch-connection-to-existing-main/il/ (CC BY 4.0)
Questions
How much does a 12-inch connection to existing main cost in Illinois?
Public bids in Illinois put the 12-inch connection to existing main at a median of $5,911 each, with the middle half of bids between $5,238 and $10,375. That is 17 % below the national median of $7,100. Based on 14 bidder prices from 3 public bid tabulations opened between December 2022 and June 2025.
Is Illinois more expensive than the national average?
For this item the Illinois median bid is 17 % below the national median of $7,100. Bid prices depend on the owner, the job size and what the item includes, so compare with the sources below.