Keep out of the affected area
- Keep children and pets away from the area entirely.
- Do not run fans in the space. Moving air spreads contamination through the house.
- Do not attempt to extract it with household equipment.
- Avoid using drains and fixtures on that line until the cause is identified.
- Photograph the extent before anything is moved.
Why sewage is a different job
With clean water, the problem is moisture and the goal is to get materials back to normal. With sewage, moisture is the secondary issue. The water carries bacteria and organic material that soak into porous surfaces and stay there after the water is gone. Extracting and drying a carpet that has been through a sewage backup returns it to normal moisture while leaving the contamination in place.
That single fact drives the whole approach. Rather than asking what can be dried, the work asks what can be cleaned all the way through. Material that can only be cleaned on the surface comes out.
How the work proceeds
The area is contained before anything is removed. Openings to the rest of the house are sheeted off and the work zone is put under negative pressure, so air flows into it and is filtered on the way out rather than carrying contamination into clean parts of the home. Skipping this step means the removal itself distributes the problem.
Affected porous material is then removed and bagged. That typically means carpet and padding, the lower band of drywall, wet insulation, particleboard, and laminate or engineered flooring. Non-porous material such as concrete, tile, sealed hardwood and structural framing can usually be cleaned and kept, since contamination stays on the surface where it can be reached.
Cleaning follows removal, and only after cleaning does the structure get dried in the ordinary way, with air movers and dehumidification under moisture readings. Drying before cleaning would set contamination into the materials being dried.
Where these losses come from in North Dallas
Cast iron and clay laterals in expansive soil
Blackland clay swells every wet winter and shrinks every summer, and the drain line buried in it moves with the ground. Cast iron inside a slab corrodes along the bottom of the pipe until it opens, clay tile out to the main parts at the joints, and roots follow the moisture in through either. Both materials went into the ground here before the mid-1970s.
Storms that load the collection system at once
North Texas rain arrives as two inches in an hour rather than as steady drizzle, and clay sheds almost all of it. Runoff enters the sanitary system through cracked laterals and manholes across whole neighbourhoods at the same moment, the mains run full, and the surcharge comes back up wherever a house connection sits low on the street.
Septic systems on the rural edges
The built-up parts of this service area are on municipal sewer, but acreage on the outer edges of Flower Mound and north of Highland Village still runs on septic. A drain field saturated by a wet week cannot take any more, so the tank backs up toward the house, and it does so through the fixture closest to the slab rather than at the tank.
Sewage cleanup by city
- CarrolltonZIP 75006, 75007, 75010
- LewisvilleZIP 75057, 75067, 75077
- PlanoZIP 75023, 75024, 75025, 75074, 75075, 75093, 75094
- Flower MoundZIP 75022, 75028
- The ColonyZIP 75056
- CoppellZIP 75019
- Farmers BranchZIP 75234, 75244
- AddisonZIP 75001, 75254
- Highland VillageZIP 75077
- RichardsonZIP 75080, 75081, 75082
Frequently Asked Questions
- Why can sewage water not simply be extracted and dried?
- Because the concern is contamination rather than moisture. Water from a sewer backup carries bacteria and organic material that remain in porous surfaces after the water itself is gone. Drying a saturated carpet returns it to normal moisture but does nothing about what soaked into it, which is why porous material affected by sewage is removed rather than dried.
- What has to be removed after a sewage backup?
- Generally carpet and padding, the lower band of drywall, wet insulation, particleboard and any laminate or engineered flooring the water reached. Non-porous surfaces such as concrete, tile, sealed hardwood and framing can usually be cleaned and kept. The dividing line is whether the material can be cleaned all the way through or only on the surface.
- Is a backup from a clean toilet treated the same way?
- Water from a toilet overflow that has not passed the trap is a lesser category and is handled less aggressively. Once water has come back up from the lateral or the main, or has passed through the trap, it is treated as contaminated regardless of how it looks or smells. Describe what actually happened when you call, since the two get very different responses.
- How is the rest of the house kept clean during the work?
- The affected area is contained before removal starts, usually with sheeting over openings and negative air pressure inside the work zone so air flows into it rather than out into the rest of the home. Material comes out bagged. Without containment, the removal itself distributes contamination through the house.
- Which North Dallas houses are most likely to have a failing lateral?
- Anything plumbed before the mid-1970s, which means most of Farmers Branch, the older core of Carrollton, Richardson Heights and the early Plano neighbourhoods. Those houses have cast iron inside the slab and clay tile out to the main, both now fifty to seventy years old and both sitting in clay that moves every season. Newer construction was plumbed with plastic and fails far less often.