In simple terms, you cannot drain pool water into the streets, curbs, catch basins, gutters, ditches, channels, and ultimately, into storm drains (which flow directly into local streams)!
Do not drain pool or spa water into your septic system, as it may cause system failure. Make sure the water is not cloudy, the pH is neutralized, and the chlorine or other disinfectant residual is below 0.1 milligrams/liter (parts per million).
The first choice for draining swimming pool water should be to drain pool water into the sanitary sewer. In-ground pools typically have a sanitary sewer drainage inlet near the pool equipment. Pools and spas not plumbed with a sanitary sewer drainage inlet can be drained to a sanitary sewer line plumbed to the home.
Pool water should never be drained to the street or the storm drain. Storm drains in the Bay Area typically run into local creeks, rivers and the bays.
As noted, typical maintenance or winterizing your pool shouldn't require you to completely drain the water. You risk damaging your pool liner and the structure of your above ground pool.
If you've ever needed to drain your pool, it's likely you've already encountered a submersible pump. A submersible pump, as the name implies, operates while fully submerged in water. These pumps feature a lot of horsepower, and primarily drain the water safely from swimming pools and spas.
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 freshly chlorinated pool should not be discharged into the yard; the chlorine is harmful to yard plants and the environment as a whole. Using a test kit, your pool water needs to reflect a certain concentration of chlorine, such as 0.1 ppm (parts per million), before it is safe to drain into your yard.
But did you know there's an easy way to reuse the water that's already in the pool? All you have to do is recycle it! Meet reverse osmosis — the best way to purify your swimming pool water. It works by pushing the existing water through semipermeable membranes that hold off any impurities, particles, and buildup.
Run a hose from your swimming pool to the sanitary sewer access port or your indoor drain. Attach a submersible sump pump to the other end of the hose and place it in the deep end of the pool. Many cities have ordinances dictating the allowable flow rate of the sump pump you use when draining pool water into the sewer.
If ground water is not a problem a pool can be left empty for weeks or even months as long the hydrostatic relief in the bottom of the pool is open and functioning. If the time frame of the pool being empty gets into freezing weather there is real risk of freeze-thaw damage to surface of the pool.
Draining a pool can take up to 14 hours, depending on the size, so be sure to drain it on a day when you have sufficient free time. You need to be home to check on the pool, the hoses, and the pump frequently. Do not let the pump run dry or it can become damaged.
Because there is no main drain on most aboveground pools, you will only be able to lower the water to the bottom of the intake or skimmer, using your aboveground pool filter system. To drain an aboveground pools, either a). Use small submersible electric pump and garden hose, or b).
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.
Generally, pool water needs to be replaced once every five to seven years. This should be done during mild weather so that your pool surface is not at risk from strong sunlight and heat. Your pool maintenance company can recommend when it is time to drain your pool.
The average outdoor spigot on a home can produce up to 12 gallons per minute. A small pool can be filled in a few hours, while a large one can take 14 hours.
Most in-ground pools will have to be drained and refilled at some point. But cleaning should not be the reason to do it. Pools will need to be drained and refilled every 5-7 years on average, or if there is a major necessary repair. Otherwise, avoid draining your pool if at all possible.
If you have an above-ground pool with a vinyl pool liner, drain the pool to about 1 inch below the bottom of the skimmer mouth. It's acceptable to drain the pool a few more inches below that if you live in an area that gets heavy precipitation during the winter months.
You'll need to keep draining water off the cover with a pump or siphon to protect it from damage. Important: Never drain an above ground pool completely when winterizing. Your vinyl liner can dry out, shortening its life considerably.
At an average of $0.004 per gallon, city water is the most inexpensive and most popular option. For 15,000 to 30,000 gallons, you'll pay between $60 and $120.
The water in the pool helps hold the liner into place. If you drain your pool you can cause your vinyl pool liner to shrink and upon refilling, if the liner has lost its elasticity it can cause the liner to rip or tear. The liner can also become hard and brittle.
A 10,000 gallon pool will take about 14 hours to drain, the maximum rate recommended by the City of Phoenix.