Septic tank and drain cleaning

About the business

This has to be said first: this is not easy money, it is dangerous work. Methane, hydrogen sulphide, carbon monoxide, ammonia and propane collect inside a septic tank. A man who climbs in loses consciousness in minutes, and the man who goes in to save him dies too. On 15 March 2023 at a garment factory in Ashulia that is exactly what happened to three people: Mithu, a sanitation worker of 16, went down first; after an hour with no answer Rakib, 22, followed; then Mohammad Ali, 26. The fire service brought out all three bodies by 10pm. In May 2026 four workers died at Sarail in Brahmanbaria, in June two at Amtali in Barguna, and in September two in Faridpur. The same thing keeps happening. India banned manual septic tank cleaning in 2013; Bangladesh has no such law. Doing the work safely is therefore your own decision, not a legal obligation. There is only one safe way: empty it by machine without anyone going in. The Dhaka firms that do this work use a vacuum tanker and a high-pressure jetting machine, and one of them says its price starts at around Tk 7,000 and rises with the size and condition of the tank. Labour is costed separately: one online listing puts the daily wage for this work at Tk 800-2,000, with a job taking 4 to 8 hours and one to four men. A tank is meant to be emptied every three years, or five for a large one, so the same house does not pay you often. You have to cover ground.

Unit economics

What you need to start

• A vacuum tanker, the only way to empty a tank without going in, plus a high-pressure water jet or sewer jet, power rodding cable, muck rake and wrecking bar. The prices of the tanker and the jetting machine could not be verified here.Equipment
• Safety equipment: a gas detector, a blower for ventilation, breathing apparatus, rope and harness, gloves, goggles and masks. A tank holds methane, hydrogen sulphide, carbon monoxide, ammonia and propane; the source does not state at what concentration they become lethal.Equipment
• Fuel, disinfectant, lime and cleaning chemicals. How much a job takes and what they cost could not be sourced.Starting stock
• Trade licence from the city corporation, municipality or union parishad: form Tk 10, licence book Tk 50, standard tax Tk 30, stamp Tk 150-300, licence fee Tk 100-60,000, plus signboard fee and VAT, issued in 3-5 working days; validity not stated in the source. No separate licence or certification for emptying septic tanks could be found, and a newspaper opinion piece confirms that while India banned manual cleaning in 2013, Bangladesh has no such law.Licence
• Trained, certified technicians and a written standard operating procedure; the newspaper piece names both as conditions of safe maintenance. Who issues such certification in Bangladesh could not be found.Skill
• A designated discharge point, a treatment plant or a dumping point named by the city corporation or municipality. Without it there is nowhere to take a full tanker. The specific points and any fee could not be verified here and must be checked with the local city corporation.Supplier
• A place to keep the tanker and equipment and to wash down. This is not a shop but a mobile service; the office is a phone number and a yard.Workspace

How the work is done

1. 1Decide whether you will work by machine or by sending a man down. That decision is not about money, it is about a life. It is not illegal in Bangladesh, but between 2023 and 2026 at least eleven people died this way in Ashulia, Sarail, Amtali and Faridpur.
2. 2Take a trade licence from the city corporation, municipality or union parishad: form Tk 10, licence book Tk 50, standard tax Tk 30, stamp Tk 150-300, licence fee Tk 100-60,000, issued in 3-5 working days.
3. 3Go to the city corporation or municipality and find out where the sludge must be discharged. Tank waste cannot be dumped into a canal or a drain; without a treatment plant or a designated point settled in advance, you will be stuck on the first job.
4. 4Get a vacuum tanker, bought or hired. That is the real asset in this business, because without the machine there is no safe way to empty a tank. Hiring one at the start keeps the capital small.
5. 5Take a jetting machine for clearing blocked drains and pipes. The Dhaka firms list a high-velocity water jet, power rodding cable and rakes alongside the vacuum tanker.
6. 6Buy a gas meter, a blower to force air in, breathing apparatus, rope and harness, gloves, goggles and masks. A tank holds methane, hydrogen sulphide, carbon monoxide, ammonia and propane, and they are there whether or not you can smell them.
7. 7Train your men hands-on: how long the cover must stay open and the air move, how to read the gas meter before calling it safe, and what to do if someone collapses inside. Above all, never go in to rescue: that is exactly how the second and third men died at Ashulia.
8. 8Quote each job after seeing the tank's size and condition. One Dhaka firm starts at around Tk 7,000 and says the price depends on the tank's size, litreage and condition. Quoting blind over the phone is a mistake.
9. 9Get standing contracts with flat building committees, factories, hospitals, hotels and hostels. A household tank is emptied once in three to five years, so going door to door alone will not sustain the work.
10. 10Fix the wage and hours in advance. The market rate for this work is Tk 800-2,000 a day, a job runs 4 to 8 hours and takes one to four men, and that arithmetic has to be in your head when you quote.
11. 11Give a receipt for every job and keep photographs before and after. Factory and hospital contracts need paperwork, and if there is a dispute those photographs are your evidence.
12. 12Look into accident insurance or a compensation arrangement for your workers. No law forces it, but one death ends the family, brings the case and ends the business, all at once.

Sources

• Poshora BD — service list with booking prices

  Collected: 21 Sept 2026

  Supports: Selling price · ঢাকা

• সিটি কর্পোরেশন থেকে ট্রেড লাইসেন্স প্রাপ্তির ধাপ সমূহ

  Collected: 16 Sept 2026

  Supports: requirements.LICENSE · বাংলাদেশ

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