Sewage backups and biohazard situations are a different problem from a burst pipe or a leaky roof. Raw sewage carries bacteria, viruses, and parasites, so the job isn't just drying things out, it's removing contaminated material, disinfecting everything that's left, and confirming the space is actually safe to use again. The same crews often handle other biohazard jobs too: trauma or crime scene cleanup, hoarding situations, mould tied to long-term moisture, and animal waste cleanup. We list 7 businesses in Mississauga that offer this kind of work.
A proper sewage cleanup starts with stopping the source and extracting standing water or waste. Anything porous that touched contaminated water, drywall, carpet, insulation, sometimes subfloor, usually has to be cut out and thrown away rather than cleaned, because you can't fully disinfect materials like that. What's left gets treated with hospital-grade disinfectants, and the area gets dried and monitored with moisture meters to make sure mould doesn't move in afterward. The team should be wearing proper PPE (gloves, respirators, protective suits) and disposing of waste according to local regulations, not just bagging it and putting it in your regular bin.
Our ranked guide to Mississauga's water damage restoration services scores companies on response time, certifications, equipment, and how they handle exactly this kind of higher-risk job. The full scoring breakdown is explained on our methodology page.
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7 businesses, scored on recent reviews. The order weighs each business's overall score by how much of its reviewed work is sewage & biohazard cleanup, so a lower-scored specialist can rank above a higher-scored generalist.
When water or fire damage strikes, ONT Restoration typically responds within hours and handles mitigation with care. Reviewers consistently praise the speed of initial assessment, the professionalism of named technicians, and the thorough drying setup on-site. A small number report difficulty reaching the company initially, though most who connect say the team guides them through the repair and insurance process clearly.
The team consistently arrives quickly for emergencies, removes standing water, and explains each step without surprises. Reviewers note responsiveness is their strongest asset, with one office flood resolved in 47 minutes, and thorough drying that leaves basements properly restored.
Ten consecutive five-star reviews praise speed, professionalism, and quality across water damage, mold removal, and emergency work. Repeat customers cite fair pricing and a team that delivers on restoration and repairs without cutting corners.
Staff deliver fast, clear communication from first contact through project completion. Photos and daily updates keep owners informed; quotes are transparent and arrival times swift. Work spans mold removal, water damage, odor elimination, and deep cleaning, with particular strength in handling complex situations remotely or under urgent timelines. The team consistently earns trust through honest advice rather than overselling scope.
Five-star reviews across two years show consistent speed and professionalism. Reviewers praise the team's responsiveness to emergencies, clear pricing, careful handling of sensitive items, and ability to guide insurance claims. Work spans basement flooding, sewage cleanup, mold removal, and finishing touches like painting and flooring; customers note jobs completed on or ahead of schedule with thorough cleanup afterward.
Connect with sewage & biohazard cleanup in Mississauga
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Reviewers consistently report fast response, professional work, and clear explanations from the crew. The business handles mold removal, water damage, sewage backup, and emergency repairs; multiple reviewers mention staff assistance with insurance claims and same-day availability.
Five recent one-star reviews report serious issues: delayed follow-up from staff, billing disputes, subcontractor damage to property and possessions, and conflicts with insurance company. Older five-star reviews praise quick response and quality work, but the weight of recent complaints about honesty and accountability creates substantial concern. Service quality appears inconsistent across branches and hinges on which technician shows up.
Enquiries submitted through our forms may be passed to partner providers who can carry out the work. We may receive a referral fee for these introductions, but our rankings and scores are based solely on our published methodology and are not affected by referral fees.
Last updated 2026-08-12