Houses and pipes in Mobile
De Tonti Square, Oakleigh Garden District, Church Street East and Old Dauphin Way have homes from the 1830s through the 1910s, many raised with crawlspaces and old clay laterals.
Midtown neighborhoods like Leinkauf and Ashland Place have bungalows and Colonial Revivals from the 1900s through the 1940s.
West Mobile filled in from the 1950s onward with ranches on slabs and newer subdivisions.
Mobile sits on sandy, low ground near Mobile Bay, with a high water table and frequent heavy rain.
Hurricanes, including Frederic in 1979, Katrina in 2005 and Sally in 2020, have flooded and damaged parts of the city.
Who handles what in Mobile
Mobile Area Water and Sewer System, MAWSS, runs the sewer system for Mobile. The private sewer lateral from a Mobile home out to the public main is the owner's responsibility.
Drain problems Mobile homes see most
| Problem | Why it happens here |
|---|---|
| Roots from live oaks | Oakleigh, Old Dauphin Way and Midtown |
| High water table | Low areas near the bay |
| Hurricane and storm flooding | Low neighborhoods |
| Crawlspace drain leaks | Older raised homes |
| Cast iron under slabs | Midcentury west Mobile homes |
| Sand and settling pipe | Sandy soils |
Mobile drains through the year
Mobile is one of the rainiest cities in the country, and summer storms and hurricane season from June through November saturate the ground and overload sewers.
Live oak roots grow year-round in the warm, wet climate.
What drain cleaning costs in Mobile
| Job | Typical range |
|---|---|
| Sink, tub or toilet cleared | $125–$260 |
| Main line cleared from a cleanout | $185–$420 |
| Root cutting | $245–$565 |
| Hydro jetting | $320–$775 |
| Sewer camera inspection | $130–$265 |
| Backflow preventer installation | $750–$2,350 |
Newer west Mobile lines go quickly. Century-old clay under live oaks, crawlspace work and flooded access take longer.
Before the plumber arrives
- 1
Stop the water
Pause laundry, dishes and showers.
- 2
Heavy rain?
If streets are flooded, the sewer may be overloaded; wait for the water to drop.
- 3
Raised house?
A sewer smell under the floor can mean a crawlspace leak.
- 4
Find the cleanout
Older homes may have access only under the house or porch.
Historic districts
Mobile, founded in 1702, has some of the oldest neighborhoods on the Gulf Coast. De Tonti Square, Oakleigh Garden District, Church Street East and Old Dauphin Way have Creole cottages, Greek Revival homes and Victorians, many raised on piers with crawlspaces. Their laterals were added long after construction, and live oak roots have worked into many of them.
Live oaks
Mobile's live oaks, some centuries old, arch over Government Street and the historic districts. Their roots spread through sandy soil and find old clay and cast iron joints. Root cutting clears lines, and lining provides a lasting fix without harming protected trees.
Rain and the water table
Mobile averages more than sixty inches of rain a year, among the most of any U.S. city. The water table sits close to the surface, and heavy storms saturate the ground and seep into cracked laterals. Low sewers can surcharge, and backflow preventers help in low areas.
Hurricanes
Hurricanes have hit Mobile repeatedly, from Frederic in 1979 to Katrina's storm surge in 2005 and Sally's flooding in 2020. Storm surge, flooding and fallen trees can damage laterals. After a major storm, a camera inspection checks for silt, debris and damage.
A typical Mobile call
During a summer downpour, a family in a 1910 raised cottage in Oakleigh sees the bathtub filling with gray water. The plumber waits for the street to drain, then opens the line under the house and clears roots from a live oak about thirty-five feet out. On the camera, the clay is cracked with sand washing in. They plan a liner.
Midtown
Midtown neighborhoods like Leinkauf, Ashland Place and Flo-Claire have bungalows and Colonial Revivals from the early twentieth century, many under big oaks. Roots in clay laterals are common.
West Mobile
West Mobile grew from the 1950s onward with ranches on slabs and newer subdivisions. Cast iron under older slabs can corrode in the humid climate, and sandy soil can let lines sag.
Mardi Gras
Mobile's Mardi Gras, the oldest in the country, brings weeks of parades and huge crowds downtown. Restaurants and bars run at full capacity, and pumping grease traps before the season prevents backups.
Sand in the line
Mobile's sandy ground filters into every open joint and collects in the low spots of an old line. Mixed with kitchen grease, it sets up almost like mortar. A high-pressure jetter breaks it loose, and a liner keeps more sand from getting in.
Crawlspaces
Many older Mobile homes sit on piers, and the humid Gulf air keeps crawlspaces damp. Cast iron and galvanized drain lines rust and leak. A musty or sewer smell under the house is a sign to check.
Raised homes also make it easier for a plumber to see and reach those lines, which can keep repair costs down.
Seafood and restaurants
Mobile's seafood restaurants, from downtown and the Causeway to west Mobile, fry a lot of shrimp, oysters and fish. Kitchens there must keep interceptors pumped to stay open.
Hurricane preparation
In May, before the first named storm, it's worth having an older Mobile line cleaned and camera-checked and pricing a backflow preventer. After a storm, wait for flooding to recede before running a lot of water.
Spring Hill and the west side
Spring Hill, on higher ground west of downtown, was a summer refuge for wealthy Mobile families in the 1800s and is now home to Spring Hill College and leafy streets of older homes. Higher ground means less flooding, but long laterals under huge live oaks and pines fill with roots. Many homes here have been expanded over the years, with new bathrooms tied into old lines.
Church Street and Dauphin Street
Downtown's Dauphin Street is lined with restaurants and bars in buildings that date to the 1800s, and Church Street East has homes nearly as old. Old sewer connections under brick sidewalks and courtyards are common, and heavy use during events keeps them busy.
The port and shift workers
Mobile's port, shipyards and the Airbus assembly plant run around the clock, and many households work shifts. Water use at odd hours exposes partial clogs quickly, often in the middle of the night.
When you call
Share the neighborhood, the home's age, whether it's raised or on a slab and whether streets flooded recently. Mention live oaks near the line.
Mobile ZIP codes
- 36582
- 36602
- 36603
- 36604
- 36605
- 36606
- 36607
- 36608
- 36609
- 36610
- 36612
- 36617
- 36618
- 36619
- 36693
- 36695
Mobile drain questions
Who handles sewer in Mobile?+
MAWSS runs the public system. The homeowner owns the private lateral out to the main.
Do live oaks damage sewer lines?+
Yes. Their roots spread far through sandy soil and find cracked joints in old pipe.
Does Mobile's rain affect sewers?+
Yes. Mobile is one of the wettest cities in the country, and heavy rain seeps into cracked laterals and overloads sewers.
Is a sewer scope worth it before buying in Mobile?+
Yes, especially for historic homes and those in flood-prone areas.
