Comparison

DIY vs Professional Tank Cleaning

When it's fine to do it yourself, and when it's worth calling a professional: for safety, thoroughness and a record you can trust.

Prepared by Blink PropertyCare

This guide covers services we actually offer in Lagos. It separates cleaning and visual checks from specialist diagnosis, explains where a site assessment is needed, and links technical references where they materially support the advice. It is general maintenance guidance, not an engineering or water-safety certificate.

Last updated: July 2026
You can clean a small, accessible overhead tank yourself, and for a low-use tank that's reasonable. But professional cleaning is safer and more thorough for underground tanks, large reservoirs, heavy sediment or anywhere drinking water is involved, and you get an inspection and photo proof you can't easily do alone.

The short answer

DIY suits a small, easy-to-reach overhead tank that isn't badly fouled. The moment you're dealing with an underground tank, a large reservoir, thick sludge, or water your family drinks, the safety, thoroughness and inspection that come with professional cleaning are worth it.

The DIY route

Pros

Doing it yourself

  • No service fee for a simple, accessible tank
  • Do it on your own schedule
  • Fine for low-use, non-drinking storage
Cons

Watch out for

  • Confined-space and roof risks (underground tanks especially)
  • Hard to fully remove sludge and biofilm without the right tools
  • No inspection of cover, float valve or contamination risks
  • No photo record for tenants, guests or your own peace of mind

The professional route

  • Trained technicians and the right tools for a thorough clean
  • Safe handling of underground tanks and reservoirs
  • Inspection of cover, inlet/outlet, float valve and visible fittings
  • Photo-backed report you can keep or share
  • Minor issues flagged before they become expensive
Honest note on water safety

Whether DIY or professional, cleaning removes sediment and visible contamination: it is not a guarantee of safe drinking water. For drinking water, pair a clean tank with proper filtration or treatment.

Which should you choose?

Your situationRecommended
Small overhead tank, easy access, low useDIY is reasonable
Underground tank or reservoirProfessional
Heavy sludge or long-neglected tankProfessional
Drinking water / kids / elderly at homeProfessional
You want an inspection + photo proofProfessional
Good to know

Frequently Asked Questions

Yes, for a small, accessible overhead tank that isn't badly fouled. For underground tanks, reservoirs, heavy sludge or drinking water, professional cleaning is safer and more thorough.

For most households it is: you get safety, a thorough clean, an inspection and photo proof, and early warning of problems that cost more later.

It removes sediment and visible contamination but is not a water-safety guarantee. Pair a clean tank with filtration or treatment for drinking water.

Ready when you are

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