How to Clean a Swimming Pool: A Step-by-Step Guide for Delhi Homes

Cleaning a pool is a sequence, and the order matters. If you vacuum before you brush, you leave dirt clinging to the walls. If you test the water before you have cleaned it, your readings are meaningless. Follow the steps below from top to bottom and you cover everything a home pool needs in a single session. We clean swimming pools across Delhi NCR, from South Delhi, Dwarka and Gurgaon to Noida and Ghaziabad, so this method is written for the dust, heat and monsoon runoff that pools in this region actually face.

What you need before you start

Gather your kit before you begin so you are not walking back and forth mid-clean. The core tools are a telescopic pole, a skimmer net that clips onto it, a pool brush, and a vacuum head with a hose. You will also want a water test kit or test strips that read chlorine, pH and alkalinity, plus your chemicals: a chlorine product, pH increaser and reducer, and an alkalinity increaser. Keep a bucket handy for pre-dissolving granular chemicals, and wear gloves when you handle them. Check that your pump and filter are running before you touch the water, because circulation is what carries dirt to the filter and spreads the chemicals evenly afterwards. In Delhi, a lot of pool trouble comes down to fine dust and tree litter settling faster than people expect, so having the kit ready to use weekly is half the battle. Regular swimming pool cleaning is far easier to keep up than a rescue job on a neglected pool.

Step 1: Skim the surface and empty the baskets

Always start at the top of the water. Use the skimmer net on your telescopic pole to lift out floating leaves, insects, flower petals and any surface film before they sink and become harder to remove. Work methodically around the whole pool, then sweep the middle where debris tends to gather. Skimming first matters because anything you leave floating will settle onto the floor within hours and turn a quick clean into a heavy vacuum job. Once the surface is clear, empty the skimmer basket set into the pool wall and the basket inside the pump. Both trap debris that would otherwise choke water flow, and a blocked basket starves the filter and strains the pump motor. Give them a quick rinse with a hose, seat them back firmly, and check that water is flowing freely again. In dusty Delhi conditions and through the leaf-fall of autumn, these baskets fill faster than you would think, so a weekly empty is the minimum through the swimming season.

Step 2: Brush the walls, steps and floor

With the surface clear, attach the pool brush to your pole and scrub every internal surface. Work from the shallow end toward the deep end and from the top of the walls downward, so that everything you loosen drifts toward the floor where you can vacuum it up next. Pay close attention to the spots where dirt and algae take hold first: the steps, the corners, the waterline, and any shaded areas that stay damp. Brushing does two jobs at once. It lifts settled grime and biofilm off the surfaces, and it disturbs the earliest stage of algae before it can root and spread, which is exactly what keeps a pool from turning green in Delhi’s heat. Use firm, overlapping strokes and do not rush the tiled or textured areas, because these hold the most buildup. If you feel a slippery film under the brush, that is early algae and it is a signal to brush thoroughly and then check your chlorine level once you reach the testing step. A pool that is brushed every week rarely develops the stubborn stains that a neglected one does.

Step 3: Vacuum the pool floor

Now that everything loose has drifted to the bottom, vacuum it away. Attach the vacuum head to your pole, connect the hose, and prime it by filling the hose with water so no air is left inside, then connect it to the skimmer suction port. Move the vacuum head slowly across the floor in long, overlapping passes, the way you would vacuum a carpet, so you lift the fine silt instead of kicking it back into the water. Go especially slowly in the deep end and around drains where the heaviest debris collects. If you rush and stir up a cloud, stop, let it settle for an hour, and resume. For pools that have collected a lot of sediment, set the filter valve to the waste or drain position while vacuuming so the dirt bypasses the filter and goes straight out, which saves you clogging the filter with heavy muck. A manual vacuum takes patience, but it is the step that gives you a genuinely clean floor rather than a merely clear surface. If you own an automatic or robotic cleaner, this is where it does the same job while you move on to the filter.

Step 4: Clean the filter or backwash it

The filter is the organ that keeps your water clear between manual cleans, so it needs attention too. What you do depends on the type. A sand or diatomaceous earth filter is cleaned by backwashing: you set the multiport valve to backwash and run the pump, which reverses the flow and flushes the trapped dirt out to waste, then you rinse and return the valve to filter. Backwash when the pressure gauge climbs about 8 to 10 psi above its clean reading, which for most home pools is roughly once every week or two. Do not backwash more often than needed, because a lightly dirty sand bed actually filters finer particles than a spotless one. A cartridge filter is different: you switch off the pump, remove the cartridge, and hose it down thoroughly, replacing it once it no longer rinses clean. After any filter clean, top the pool back up to its normal level, because backwashing sends a fair amount of water to waste. A neglected filter is one of the most common reasons a Delhi pool stays slightly cloudy no matter how much you brush and vacuum.

Step 5: Test and balance the water

The final step is chemistry, and it comes last because you want to balance clean, circulating water rather than dirty water. Use your test kit or strips to read three things. Chlorine keeps the water disinfected and should sit in the range your kit marks as safe for swimming. pH should sit between 7.2 and 7.6, the band where water feels comfortable, protects the surfaces and lets chlorine work at full strength. Total alkalinity should sit between 80 and 120 ppm, because it acts as a buffer that stops the pH from swinging around. Adjust in the right order: correct alkalinity first, then pH, then chlorine, dosing in small amounts and retesting rather than tipping everything in at once. Pre-dissolve granular products in a bucket of water where the label advises it, and add chemicals with the pump running so they circulate. Delhi’s heat burns off chlorine quickly and heavy monsoon rain dilutes and unbalances the water overnight, so plan to test at least twice a week through summer and after any storm. Give the pump a few hours to mix everything, then retest before anyone swims.

When to call a professional

Weekly skimming, brushing and balancing is well within a homeowner’s reach, but some situations are genuinely a job for trained hands. If the water has turned green, gone cloudy, or developed a strong smell, the pool needs correct shock dosing and heavy vacuuming that are easy to get wrong, and a badly balanced rescue can waste a lot of chemicals or even irritate swimmers. The same applies to a pool that has sat unused for weeks, where algae and sediment have had time to take hold, or one where algae keeps coming back no matter how you dose it. A green or neglected pool is usually best handed to a proper deep cleaning rather than fought with a home kit. It is also worth booking a professional for the season-opening clean and before large gatherings, when you want the water reliably right. KaamGenie does one-time and deep pool cleans, not ongoing maintenance contracts, and pool pricing depends on the size and condition of the pool, so it is quoted after a visit rather than fixed online. You can see typical ranges in our swimming pool cleaning cost guide, then call for a quote for your pool.