Quick answer
For water damage in Hamilton, MO, shut off your main valve first, or turn off the well pump breaker if you are on a private well. Hamilton runs its own water and sewer; call City Hall at 816-583-4911. Then call a water damage restoration company; drying should start within 24 to 48 hours. Missouri insurers must acknowledge your claim within 10 working days.
Do this first
Local water and sewer lines.
- Shut off the water. Close the main valve at your house. Hamilton runs its own water and sewer; report a break at the meter or in the street to City Hall at 816-583-4911.
- Make it safe and document it. Cut power to wet rooms from a dry spot, photograph the damage, then report the claim.
- Start drying within 24 to 48 hours. Sewer charges in Hamilton are based on your water use, so a running leak raises both bills. Fix the leak, then ask City Hall about the reading.
Caldwell County had 6 flash flood warnings in 2025, its most of any year since 2016. The Hamilton weather station logs about 141 freezing nights a year, so pipes are at risk every winter.
What to know about water damage in Hamilton
141
Nights a year at or below freezing at the Hamilton 2W NOAA station, about 3.4 miles from town, with about 68 nights at 20 degrees or colder.
Water deposits
Hamilton asks owners for a $200 water deposit per meter and renters for $350. Bills are due on the 10th and late after the 20th.
Two sewer plants
Hamilton runs two wastewater plants, the Northeast and Southeast facilities, along with its own public water system.
J.C. Penney's hometown
James Cash Penney was born on a farm near Hamilton in 1875 and started as a clerk at J.M. Hale and Brothers in 1895. He opened his 500th store in that same building in 1924.
Named for two Hamiltons
Albert G. Davis founded the town in 1855 and named it for Alexander Hamilton and for Joseph Hamilton, a lawyer and soldier killed in 1813.
Source: State Historical Society of Missouri, Caldwell County place names
Homes in Hamilton
The median home dates to 1967 and about 82% were built before 1980. About 58% are owner-occupied, and about 10% are mobile homes.
Freezes and rain
The NOAA weather station at Hamilton 2W, about 3.4 miles away, averages 141.3 nights a year at or below 32°F and 68.1 at or below 20°F. In half of years the first freeze comes by October 17 and the last one after April 23. Pipes in outside walls, unheated basements, and crawlspaces are the first to split. It also averages 39.92 inches of rain a year, with about 10.9 days of an inch or more.
Check your ZIP
How often does Caldwell County get flash flood warnings?
The National Weather Service issued 27 flash flood warnings that included Caldwell County from 2016 through November 12, 2026, peaking at 6 in 2025. Each one means flooding is happening or about to happen.
Source: our count from the National Weather Service warning archive, Iowa Environmental Mesonet.
| Year | Warnings |
|---|---|
| 2016 | 5 |
| 2017 | 4 |
| 2018 | 0 |
| 2019 | 3 |
| 2020 | 2 |
| 2021 | 2 |
| 2022 | 2 |
| 2023 | 1 |
| 2024 | 2 |
| 2025 | 6 |
| 2026 | 0 |
Cost and insurance in Hamilton
How much does water damage restoration cost in Hamilton?
Most jobs run $450 to $16,000 (Angi). Creek or storm water that enters from outside is a flood claim. Mobile homes need the belly wrap opened and insulation checked.
Water removal and restoration in Hamilton
The company that answers handles frozen and burst pipes, water heater failures, basement sewer backups, sump pump failures, and leaks in mobile homes, plus burst pipes, appliance leaks, drying, and septic backups.
Hamilton questions
Who handles water and sewer in Hamilton?
The city. Call 816-583-4911, weekdays 8:30 a.m. to 4:30 p.m.
How much is the water deposit in Hamilton?
$200 per meter for owners and $350 for renters.
When does Hamilton usually freeze?
In half of years the first freeze comes by October 17 and the last one after April 23.
Which ZIP code does this page cover?
ZIP 64644, which is Hamilton and the farmland around it.