You flushed, and the shower drain in the basement started gurgling. Minutes later, raw sewage was coming up through the floor drain and both toilets. This is Category 3 blackwater, loaded with bacteria and viruses, and it is not something to mop up with household cleaners.
Free referral to independent, licensed and insured local pros. Zip codes served include 20712.

Sewage is a health hazard first and a water problem second. A Water Damage is a free referral service that connects you with independent, licensed and insured contractors near Mount Rainier who are equipped for Category 3 blackwater, including protective gear, containment, and hospital-grade disinfectants.
Expect Tyvek-style suits, respirators, and gloves. Contaminants stay in the work zone, not tracked through your home.
Containment walls and HEPA filtration keep sewage odors and particles from spreading through the house.
Each contractor carries independent licensing and insurance. Ask for proof before work begins, especially for biohazard work.
You get a written estimate that covers removal, disinfection, and drying before work starts.

Proper sewage remediation is methodical. Contamination is removed, every surface is disinfected, and only then does drying begin.

Sewage is pumped and vacuumed out with equipment reserved for contaminated water, then disposed of properly.
Anything porous that absorbed sewage, like carpet, drywall, and insulation, is removed and bagged.
Hard surfaces are scrubbed, then treated with EPA-registered disinfectants left on for the full contact time listed on the label.
After disinfection, HEPA air scrubbers and odor control treatments remove lingering sewage odor from the air and structure.
Cleanliness is checked, sometimes with ATP swab testing, before drying gets the area ready for rebuild.
Tell dispatch which drains are backing up and how far the sewage spread.
You will get an arrival time and safety reminders while the crew is on the way.
The pro sets up containment, assesses how far contamination reached, and gives you a written estimate before removal begins.
Sewage and damaged materials come out, everything is sanitized and dried, and you will be pointed to a plumber if the line needs work.
Raw sewage is a health risk. Get a protected crew out fast.
Main line backed up into the basement shower and floor drain. The crew showed up in full suits, sealed off the basement, and cleaned it like a hospital. No smell after they left.
Carmen E.Main line backup, basementHonest about what had to be thrown away and why. I appreciated the explanation.
Steve R.Toilet overflow into finished roomWith kids in the house, I wanted it contained. The plastic barrier and air scrubber kept it all downstairs.
Jenna P.Sewage backup, family homeThey recommended a plumber to camera the line afterward. Turned out to be tree roots. Glad we found it.
Omar H.Recurring sewer backup

Sewage is Category 3 water, the most contaminated class. It contains bacteria, viruses, and parasites and requires protective gear, removal of porous materials, and disinfection.
It depends on the size of the backup and where it is. Small contained areas may be fine with containment in place. Large backups, or households with infants, elderly, or immune-compromised people, often warrant staying elsewhere.
A very small hard-surface spill can be cleaned with gloves, boots, and a disinfectant. If sewage reached carpet, drywall, or a large area, professional cleanup is the safer choice.
Many standard policies exclude sewer backup unless you have a specific sewer or drain backup endorsement. Check your policy with your agent.
Common causes include tree roots in the main line, grease buildup, collapsed or bellied pipes, and municipal sewer overloads during heavy rain.
No. A Water Damage is a free referral service connecting you with independent, licensed and insured local contractors who do the work and bill you directly.

Independent sewage cleanup contractors in the network serve Mount Rainier, MD and nearby zip codes like 20712.
See nearby cities in the list below.
