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Pool Drainage

Pool Drainage

Ready to do some work on your pool? Before you start pumping out the water, you need to make sure that you are meeting the City's pool draining requirements. Please take a moment to read some "Frequently Asked Questions" about pool drainage.

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Where do I drain my pool water?
The City of Chandler requires that all pool and spa water discharges be maintained on private property, or in a sanitary sewer cleanout on private property.  During general maintenance, when backwashing your pool, drainage into the sewer cleanout is not necessary as long as the discharge is maintained on your private property.
Does the City of Chandler require a permit to drain a pool?
No permit is needed prior to draining your pool, however, the water is required to be maintained on private property or in the sewer cleanout on private property.  It is no longer acceptable to discharge pool water into the roadway.  Pipes that are "hard plumbed" to discharge off property (i.e. to the street) are considered "a direct connection to the storm drain" and are prohibited.
Do I need to contact the City when I refill my pool?
Your are not required to contact the City of Chandler when you are refilling your pool, but residents should be aware of the rise in their utility bill due to the large consumption of water.  The City does not give discounts when refilling your pool. You can use your utility bill to calculate the estimated cost to refill your pool.  If you have any additional questions on your water usage please call 480-782-2280.
When did the City change their pool draining policy?
In 2006, the City updated its policy to make the pool draining process safer and more efficient.
What does a sewer cleanout look like?
The sewer cleanout is typically a three or four inch black pipe about level with the landscaping, typically located close to the home. It may have a black cap, with a raised square nut or a recessed slot, which can be unscrewed providing access for the pool water disposal. In a newer home, you may find that there are two cleanout pipes. In this case, the one closer to the home is the preferred access point.
Does the City have plans on file that shows where the sewer cleanout is located?

The City of Chandler does not keep or maintain records detailing location information for a sewer cleanout on private property. If you have trouble locating your sewer cleanout, or have questions on proper drainage or safe flow rates, consult a plumber.
What is the recommended flow rate to drain my pool?
The recommended flow rate is no greater than 12 gallons per minute. The safe flow rate may differ depending on the size of the drain line, distance to the sewer main, and the condition of the pipes.  It may be necessary to consult a plumber regarding a safe rate to discharge the pool water into the sewer clean out.

What is the procedure for using the sewer cleanout?

  • Locate the cleanout. If there are two, use the one closest to the home.
  • Remove the cap and insert the drain hose a few inches into the pipe.
  • Secure the drain hose so it won't pop out.
  • Turn on the pump.
  • Immediately check to make sure no water is backing up into the house. Drains for showers and tubs are the first places to check.
  • If the water backs up, turn off the pump immediately. You may have a blockage, or the flow rate is too high.
  • Caution: Using a cleanout in the wall is risky, and the potential for water backing up into the home is great.

Diagrams of sewer cleanout:

Pool Drainage Diagram for Newer Homes Pool Drainage Diagrams for Older Homes
NOTE: Do not install the pool drain line as a permanent fixture. This may violate the City plumbing code or County health regulations and could contaminate the water when you refill the pool. Pipes that are "hard plumbed" to discharge off property (i.e. to the street) are considered "a direct connection to the storm drain" and are prohibited.

Diagrams courtesy of the City of Phoenix

The chart below shows how long the draining process will take:


Flow Rate

Pool Volume (Gallons)











28 hrs

31 hrs

33 hrs

36 hrs

39 hrs

42 hrs



24 hrs

26 hrs

29 hrs

31 hrs

33 hrs

36 hrs



21 hrs

23 hrs

25 hrs

27 hrs

29 hrs

31 hrs



19 hrs

20 hrs

22 hrs

24 hrs

26 hrs

28 hrs



17 hrs

18 hrs