Plastic tanks · underground tanks · rooftop tanks
KejaPal Cleaners offers water tank cleaning in Nairobi for homes, apartment blocks, schools, hotels and businesses. We drain the tank, remove sludge and slime, scrub the walls, disinfect with a water-safe product, rinse thoroughly and refill, so the water you store stays clean and safe to use.
Most Nairobi homes and businesses store water, because supply from the mains is not always steady. Water sits in plastic tanks on stands, in rooftop tanks or in large underground tanks for days or weeks. Over time, fine silt settles at the bottom, a slimy film grows on the walls and, in some tanks, algae or insects get in. That water then flows to taps, showers and kitchens. Regular tank cleaning keeps it clean.
This page explains how we clean water tanks, how often to do it, what it costs and how to keep your tank clean between visits.
Water hygiene
For most homes, cleaning every six months is a good routine. Tanks that fill from boreholes, rainwater or bowsers may need cleaning every three to four months, because they carry more sediment. Underground tanks should be inspected at least once a year. In addition, clean the tank whenever the water smells, looks cloudy, tastes odd or shows particles, and after any repair to the tank or the plumbing.
Safe water is basic to health. Dirty tanks can harbour bacteria that cause stomach illness, especially for children. The World Health Organization sets out how stored water should be protected, including keeping tanks covered and cleaned. In Kenya, the Ministry of Health also promotes safe water storage. Even if you treat or boil drinking water, the water used for washing dishes and bathing still comes from the tank.
Black plastic tanks are the most common in Nairobi. They are light and durable, but the inside walls grow a slippery film, especially in warm weather. Because most have small lids, our cleaners use long brushes and, for larger tanks, enter carefully with safety equipment. We also check the lid seal, the overflow pipe and the stand, and tell you if anything needs repair.
Large underground tanks in apartment blocks, schools and commercial buildings collect more sludge and are harder to access. These are confined spaces, so we follow strict safety steps: ventilation before entry, a second person outside at all times and proper protective equipment. We pump out the water and sludge, scrub the walls and floor, disinfect and refill. For blocks with booster pumps, we coordinate with your caretaker so residents know when water will be off.
Apartment blocks often share large tanks that serve dozens of households, so clean water matters to everyone. Our water tank cleaning in Nairobi for blocks is planned with management committees and caretakers, usually on a weekday morning when demand is lower. We give residents notice through the caretaker, finish within the agreed time and provide a short report with photos for the management file.
Schools, hotels, restaurants and clinics depend on stored water for kitchens and washrooms. Therefore we schedule tank cleaning during holidays, quiet periods or overnight. For food businesses, clean tanks support hygiene standards during county health inspections. We can set up a regular schedule, so tank cleaning becomes part of your maintenance calendar rather than an emergency.
Cleaning
We report anything that needs a plumber or a tank repair, so you can fix it before the next fill.
Water hygiene
Keep the lid closed and secure at all times. Clean gutters before the rains if you harvest rainwater, and use a first-flush diverter so the dirtiest water does not enter the tank. Moreover, place tanks away from trees, which drop leaves and attract insects. Finally, book a professional clean every six months, and more often for borehole or bowser water.
Tank cleaning is about more than rinsing. It needs the right disinfectant at the right strength, a thorough rinse so no taste remains and safe methods for confined spaces. Our team follows each step carefully and checks the tank fittings while they work. As a result, you get clean water without chemical taste. That is why homes and blocks book our water tank cleaning in Nairobi twice a year.
Borehole water often carries fine sand and minerals, which settle quickly as sludge at the bottom of the tank. Rainwater carries dust, leaves and bird droppings from roofs and gutters. Both need more frequent cleaning than county supply. For borehole systems, it also helps to fit a sediment filter before the tank, which reduces the sludge that builds up. For rainwater, clean gutters before each rainy season and keep inlet screens in place. If you are unsure about water quality, a laboratory test after cleaning can confirm the water is safe, and we can point you to testing options.
Some signs mean the tank should not wait for its next scheduled clean. For example, brown or cloudy water from the taps, a musty or rotten-egg smell, slimy feeling water, small particles in glasses or insect larvae near the lid all point to a dirty tank. Similarly, if a rat or bird has got into the tank, stop using the water for anything except flushing and book a clean straight away. In these cases, we prioritise the job and can usually attend within a day or two.
Water Tank Cleaning
Most household tanks can be cleaned within two to three hours, so we usually book morning slots and refill by lunchtime. For blocks and large sites, we plan a date with the caretaker a week ahead. Furthermore, we can send a reminder every six months, so the next clean is never forgotten.
Due for a tank clean? Tell us the tank size, type and location, and we will send a free written quote and a time.
Water Tank Cleaning
If you are planning this job, you may also need one of these services. Each one can be added to the same visit or booked separately:
See every option on our full list of cleaning services.
Clients choose us for water tank cleaning in Nairobi because we are clear, careful and consistent. For example, every job has a written scope, a team leader on site and a walk-through at the end. As a result, water tank cleaning in Nairobi with KejaPal feels simple from the first message to the final check. Furthermore, a coordinator stays with you if you want to book again.
Every quote for water tank cleaning in Nairobi is prepared after we have assessed the job. For example, the size of the space, its condition, access and any extras all change the work involved. Therefore we look first, quote second and agree the price with you third. Moreover, if you want to reduce the cost, we suggest practical options, such as a regular plan or combining services. Our cleaning cost guide has more detail.
Get started
Tell us what needs cleaning and where, and our cleaning coordinator will call you back within one working day with a free written quote and a time.
Prefer to talk? Call +254 184 379 590
Every six months for most homes, and every three to four months for borehole, rainwater or bowser supply.
Most household tanks take two to three hours, including draining, scrubbing, disinfecting, rinsing and refilling.
No. We use a water-safe disinfectant at the correct strength and rinse thoroughly before refilling.
Yes. We clean underground and concrete tanks with confined-space safety steps and pumping equipment.
Yes, for a few hours. Fill buckets for essential use before we start.
Yes. We plan with the caretaker, notify residents and provide a short report with photos.
Tell us what needs cleaning and where. We will check the job by photos, a video call or a quick visit, send a free written quote and book a time that suits you.