Quick answer
For water damage in Martinsburg, MO, shut off your main valve first, or turn off the well pump breaker if you are on a private well. For a meter or street leak, call the city at 573-492-6616. 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.
The city number comes from the Missouri State Auditor's list of local governments.
- Shut off the water. Find the shutoff, often in the water heater closet or under the home on manufactured units, and close it. Martinsburg pumps from two city wells, so a street or meter leak goes to the city at 573-492-6616.
- 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. Martinsburg's four-cell lagoon land-applies its treated water by irrigation. If sewage comes up a basement drain, a blocked line between the house and the city main is the usual cause, so call a plumber and let the city know.
About 44% of homes in Martinsburg are mobile homes. Audrain County had 8 flash flood warnings in 2024, its most in a decade.
What to know about water damage in Martinsburg
44%
Share of Martinsburg homes that are mobile homes, by Census estimates. Supply lines under the floor and water heater closets are where most winter leaks start.
Two city wells
Martinsburg's water comes from two groundwater wells, on Hickory Street and Jefferson Street, and serves about 559 people.
An irrigated lagoon
The four-cell lagoon is designed for 354 people and about 35,400 gallons a day in dry weather. Treated wastewater is irrigated onto land, and sludge stays in the lagoon.
Source: Missouri DNR permit MO-0022349
First called Hudson City
The town was laid out on November 21, 1857, and named for William Russell Martin, who gave the town site. The station was first called Hudson City.
Source: State Historical Society of Missouri, Audrain County place names
Homes in Martinsburg
The median home dates to 1982, and about 42% were built before 1980. About 89% are owner-occupied.
Freezes and rain
The NOAA weather station at Mexico, about 11.5 miles away, averages 112.7 nights a year at or below 32°F and 42.3 at or below 20°F. In half of years the first freeze comes by October 25 and the last one after April 11. Pipes in outside walls, unheated basements, and crawlspaces are the first to split. It also averages 43.52 inches of rain a year, with about 11.4 days of an inch or more.
Check your ZIP
How often does Audrain County get flash flood warnings?
The National Weather Service issued 42 flash flood warnings that included Audrain County from 2016 through November 12, 2026, peaking at 8 in 2024. 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 | 6 |
| 2017 | 2 |
| 2018 | 4 |
| 2019 | 3 |
| 2020 | 4 |
| 2021 | 5 |
| 2022 | 1 |
| 2023 | 1 |
| 2024 | 8 |
| 2025 | 5 |
| 2026 | 3 |
Cost and insurance in Martinsburg
How much does water damage restoration cost in Martinsburg?
Most jobs run $450 to $16,000 (Angi). Storm water that comes in from outside is a flood claim. In a manufactured home, wet floor insulation and particleboard decking usually have to be cut out and replaced.
Water removal and restoration in Martinsburg
The company that answers handles split supply lines under manufactured homes, water heater closet leaks, cracked fittings on older lines, sewer backups, and wind-driven rain, plus burst pipes, appliance leaks, drying, and septic backups.
Martinsburg questions
Who supplies water in Martinsburg?
The city, from two wells. Call 573-492-6616.
Where does Martinsburg's sewage go?
To a four-cell city lagoon. Treated water is used for land irrigation.
What was Martinsburg called before?
Hudson City, a name William Russell Martin chose for a friend, a traveling clockmaker.
When does Martinsburg usually freeze?
At Mexico, the first freeze comes by October 25 in half of years and the last one after April 11.
Why are mobile homes a water damage risk in Martinsburg?
They make up a large share of local housing, and their supply lines run under the floor behind a thin belly wrap. A split line can soak the insulation for days before anyone sees water.
How many people does the Martinsburg water system serve?
About 559, according to the city's 2025 water quality report.
Related guides
Other Missouri towns- Burst pipe, not frozen
- Water mitigation vs. restoration
- Burst pipe repair cost
- Missouri insurance claim rules, in plain English
- Frozen and burst pipes: what to do
- Does homeowners insurance cover water damage?
- How long water damage takes to dry
Local phone numbers checked November 2026: