Quick answer
For water damage in Roswell, GA, shut off your main valve first. If the City of Roswell bills you, call 770-641-3707, or 770-640-4100 after hours; Fulton County water customers call 770-640-3040. Then call a water damage restoration company; drying should start within 24 to 48 hours, before mold sets in.
Do this first
After-hours water lines.
- Shut off the water. Close your main valve. Roswell's own water utility serves about 5,600 customers; if the city bills you, call 770-641-3707 on weekdays or 770-640-4100 after hours. Most other Roswell homes are on Fulton County water (770-640-3040), and Fulton County handles all sewer lines in the city (404-612-3061).
- 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. Crawlspaces, basements, and slab homes with carpet hold moisture longer than they look.
FEMA's flood map puts about 7% of the land inside Roswell in the high-risk flood zone, mostly along Chattahoochee River, Big Creek, and Willeo Creek. The map panels for this area took effect between 2008 and 2020. Check your own address on FEMA's Flood Map Service Center. Never drive or walk through moving water, and treat floodwater as contaminated.
What to know about water damage in Roswell
15.41 ft
The record crest of Big Creek at Roswell, on September 22, 2009. Minor flooding starts at 10 feet. At 15 feet, parts of Oxbo Drive flood, and downstream, where the creek meets the Chattahoochee, water spreads into Big Creek and Azalea parks.
Source: National Water Prediction Service, Big Creek at Roswell
In or near the floodplain
About 10% of Roswell lies in or near the 100-year floodplain. The city's engineering division answers flood-zone questions for a specific address at 770-641-3780.
Homes in Roswell
The median home in Roswell was built in 1989, and 72% are owner-occupied, with a median value of about $567,100. In a finished basement, a failed sump pump or water heater can soak carpet and drywall before anyone sees it.
278 damaged homes
After the September 2009 floods, 315 homeowners in ZIPs 30075 and 30076 registered for FEMA aid. Inspectors found damage at 278 homes, totaling about $485,969. Hurricane Ivan in September 2004 added 36 more. Owners who did not apply are not counted.
160 flood insurance claims
Since 1979, the National Flood Insurance Program has recorded 160 flood claims on buildings in ZIPs 30075 and 30076. The most came in 2009, with 81, from the September 2009 floods. Of those, 85 were on buildings outside FEMA's high-risk zone. Buildings without flood insurance are not counted.
Source: FEMA NFIP claims data (OpenFEMA)
Freezes and rain
The NOAA weather station at Peachtree-DeKalb Airport, about 11 miles away, averages 49 nights a year at or below 32°F and 4 at or below 20°F. In half of years the first freeze comes by November 9 and the last one after March 25, so pipes in crawlspaces and outside walls are exposed for much of the year. It also averages 51 inches of rain a year, with about 15 days of an inch or more.
Check your ZIP
How often does Fulton County get flash flood warnings?
The National Weather Service issued 92 flash flood warnings that included Fulton County from 2016 through November 11, 2026, peaking at 15 in 2020. 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 | 2 |
| 2017 | 5 |
| 2018 | 5 |
| 2019 | 3 |
| 2020 | 15 |
| 2021 | 9 |
| 2022 | 6 |
| 2023 | 9 |
| 2024 | 15 |
| 2025 | 9 |
| 2026 | 14 |
Cost and insurance in Roswell
How much does water damage restoration cost in Roswell?
Most jobs run $450 to $16,000 (Angi). Creek and river flooding needs a separate flood policy. Finished basements take longer.
Other Fulton County numbers
Septic backup
The Fulton County Environmental Health office handles septic permits and failing systems: 770-520-7500. For a public health emergency after hours, the state line is 1-866-782-4584.
Emergency management
Fulton County EMA posts storm and flood updates and coordinates shelters and road closures: 404-612-5660. Call 911 for anyone in danger.
Source: Fulton County
Power outage
More than one utility serves Fulton County, so call the one on your power bill. It depends on your address.
- Georgia Power: 888-891-0938
- Sawnee EMC: 770-887-2363
- Cobb EMC: 770-429-2100
- GreyStone Power: 866-473-9786
- Carroll EMC: 770-832-3552
- Coweta-Fayette EMC: 770-502-0226
Sources: each utility's outage page; county list from Georgia 811
Water removal and restoration in Roswell
The company that answers handles Big Creek and Chattahoochee River floodwater, storm runoff into basements, and leaks in finished lower levels, plus burst pipes, appliance leaks, drying, and septic backups.
Roswell neighborhoods and nearby towns
Roswell questions
Am I on Roswell water or Fulton County water?
Check your bill. Roswell's water utility serves about 5,600 customers; call 770-641-3707 on weekdays or 770-640-4100 after hours. Most other homes are on Fulton County water, 770-640-3040. Fulton County handles sewer for the whole city; its north sewer line is 404-612-3061.
Is my Roswell home in a flood zone?
About 10% of the city is in or near the 100-year floodplain. Call the city's engineering division at 770-641-3780 with your address. Rising water from a creek or the river needs a separate flood policy.
Which ZIP codes does this page cover?
ZIPs 30075 and 30076, including Roswell and nearby parts of north Fulton County. See also Horseshoe Bend, Martin's Landing, and Mountain Park.
Related guides
Other Georgia towns- Water mitigation vs. restoration
- Sewage backup: what to do first
- Mold after water damage
- Mold remediation cost
- Does homeowners insurance cover water damage?
- How long water damage takes to dry
- Water in the crawl space
Local phone numbers checked November 2026: