A pool's so-called main drain is not actually a drain; that is, it is not used to drain the pool. Instead, it is an outlet, housing a pipe that runs to the pump, which sucks water through a skimmer, then through a filter, then through a heater (if you have one), and then back to the pool via multiple inlets.
During normal operation, water flows to the filtering system through two or more main drains at the bottom of the pool and multiple skimmer drains around the top of the pool. The main drains are usually located on the lowest point in the pool, so the entire pool surface slants toward them.
Consult Your Local Water Authority First
For instance, most municipalities will require you to run your pool water through your home's sewer cleanout line so it will flow to a water treatment plant. Others might allow you to send all that water down the storm drains that line your street.
The main drain is the primary way that water is drawn from your pool into the pump and filter. The main drain is located on the bottom of the pool in the deepest part. Most pools have one, but larger pools may have multiple main drains. Main drains must be protected by an approved cover.
A swimming pool main drain uses suction to pull pool water through it. Heavy particulate matter that sinks to a pool's bottom is often sucked away through a main drain.
Main drains are an essential component for water circulation within an inground swimming pool. Drains provide circulation in the deep end of the swimming pool, ensuring water clarity, proper distribution of water chemistry as well as maintaining a constant water temperature throughout the swimming pool.
If you can pump around 30 GPM (gallons per minute), which is also equivalent to 1800 GPH (gallons per hour), it should take you 2.78 hours or 2 hours and 46 minutes to drain your pool using a hose.
All you need is a medium-size water or vacuum pump. Unroll the pump's intake hose so that it reaches the center of the pool (or as close to it as possible), and submerge it in the pool. Place the outlet hose so the exiting water doesn't flood the area, but drains off away from the pool.
Pool overflow will typically go into your home's drainage system or directly out into the city's systems.
you can tell if your main drain is working by perhaps putting a leaf on it. If it sticks, its working. In any case though, the main drain is not why your pool is having a problem. It has nothing to do with your pool turning green.
If you decide to drain this pool yourself, you will first need to rent a sump pump that can be submerged under water. After renting the proper sump pump, connect it to the sewer access point and submerge the other end in the pool. Plug the pump into an outlet and let it go to work.
Flooding Your Grass Is Not A Good Idea
The problem with draining your pool in the yard, if permitted by your local water regulatory laws, is that it will quickly reach its saturation level and increase the risk of flooding your lawn, drowning the roots of your grass, and attracting mosquitoes.
A 10,000 gallon pool will take about 14 hours to drain, the maximum rate recommended by the City of Phoenix. It will take twice as long to drain if the pool size is doubled or cut in half.
First, if the draining is done at the wrong time or under the wrong conditions, you can actually risk damaging your pool structure and liner. All the water from your pool needs to go somewhere when it's drained, and that usually means the ground.
Put one end of your garden hose inside the port. Thread the hose to the back of your house. Attach the other end of the garden hose to a submersion pump and place the hose and pump in the deepest area of your pool, near the drain. The pool will begin to drain.
When constructing a new swimming pool, if you are going to use a main drain it is required that you use two. This is due to safety regulations to help prevent Main Trap Entrapment. Main drain entrapment occurs when the suction is so great through a single main drain that a person can become stuck on or in the drain.
According to the Consumer Product Safety Commission, the pressure on some pool drains can be as strong as 300 pounds per square inch. 1 This kind of pressure can suck in hair or body parts, or trap swimmers underwater and cause them to drown, even if someone is trying to pull a victim away from the drain.
Installing a main drain in an above-ground swimming pool is not too difficult. With some basic knowledge of plumbing PVC, one can be successfully installed by a do-it-yourselfer. The biggest concern is making sure all fittings are well glued and the screw holes for the main drain seal cover be completely free of dirt.
In most situations, your pool water will have no effect on the grass growing around your swimming pool. Dripping swim trunks and splashes from diving and gameplay aren't going to have a significant enough effect on the grass or soil to make a difference.
Though it's illegal to discharge swimming pool/spa backwash and drainage water off your property, in general you can dump this water into the public sewers. You can also reuse this water to help your thirsty plants! Emptying a Pool/Spa the Plant-Friendly Way: Draining an Aboveground Pool/Spa 1.
Turn the filter off (or unplug it) and set it to Waste. Shut off your skimmer and open your pool's main drain. Turn your filter on and the water will start to pump through your backwash hose. Allow the water to drain.
Draining a pool is risky business for several reasons. Your pool is not meant to be empty. Whether you have a vinyl, concrete, or fiberglass pool, it is at its best when it's full of water. Once the water is drained, you open yourself up to all sorts of damage, so drain a pool only when there is no other option.