Water Risk Profile — ZIP 36621
Flood risk, local cost data, climate factors, and insurance context for your ZIP code.
Flood Risk
High
Cost Range
$1,725–$9,775
Avg Response
42 min
NFIP
State participates
Local Climate & Risk Factors
Mobile area properties face water damage risks typical of the Deep South: high humidity accelerates mold growth within 24–48 hours of any moisture event, and Alabama's clay-heavy soils create drainage challenges around foundations. Tropical storms from the Gulf regularly deliver 4–8 inches of rain in 24 hours, overwhelming storm drains and basements in low-lying areas. Pipe freeze events occur when temperatures drop below 20°F, which happens several times per decade even in south Alabama — pipes in uninsulated exterior walls are the highest risk. IICRC S500 structural drying standards are the benchmark for all insurance claims in the state.
Flood-prone areas: Three Mile Creek bisects the northern part of the city, regularly overflowing into Eight Mile and Prichard during tropical systems — Hurricane Sally in 2020 pushed 4–6 feet of water into hundreds of homes along the creek's lower reaches, many of which had no flood insurance. Dog River and its tributaries drain large sections of south and west Mobile, and during any tropical rainfall event, neighborhoods like Theodore and parts of Midtown see street flooding that quickly enters low-slab homes built close to grade.
Water Category Cost Table — Mobile, AL
Extraction & drying cost per square foot by IICRC water category
| Water Category | $/sq ft |
|---|---|
| Category 1 — Clean Burst supply line, clean appliance overflow | $3.15–$7.74 |
| Category 2 — Gray Dishwasher, washing machine, toilet bowl (no feces) | $7.74–$9.37 |
| Category 3 — Black Sewage backup, floodwater, toilet overflow with feces | $11–$13.86 |
Estimates exclude reconstruction (drywall, flooring replacement). National benchmarks: Cat 1 $3.75–$4.25, Cat 2 $4.10–$6.50, Cat 3 $7–$7.50/sq ft — adjusted for Mobile market (3.7–12.6/sq ft range).