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Eco-Friendly Pool Draining

Be a conscientious, environmentally friendly pool owner. It’s important to consider how and where we drain our pools to keep chemicals out of earth’s water system. Let’s talk about eco-friendly pool draining.

As you prepare to drain your pool, evaluate the condition of the water.

  • Is it balanced?
  • Has it been sanitized or is it a swamp?
  • Is the chlorine high?
  • Did you test and treat it for phosphates?

Once, you’ve evaluated the water, follow these steps.


When it’s time to drain, superchlorinate/shock the pool and dechlorinate the water. Dechlorinating your water is vital to eco-friendly pool draining.

If you haven’t sanitized the water recently, or it’s in swamp condition, you must superchlorinate the pool to deal with bacteria, algae and organic matter.

If you have permission to drain to the sewer, then you may not need to superchlorinate as the water is treated at the municipal plant.

If you are superchlorinating the pool before draining it, try to get the chlorine to 30 ppm and hold it for 12 hours. This inactivates most bacteria and protozoa that are present.


You want to de-chlorinate the water before draining the pool.

The optimal way is to allow several days before you drain the pool so the water lowers the chlorine level naturally.

If this isn’t possible, you can de-chlorinat with sodium thiosulfate.

Treat for Phosphates

Test your pool, and if necessary, treat it for phosphates.

Try to lower them to at least 200 ppb before discharging.

Phosphates are a prime pollutant to our waterways. They cause many algae outbreaks in lakes and streams.

You can treat for phosphates simple, and it’s one of the best eco-friendly practices to help minimize a pool’s environmental impact during draining.

Filter the Pool

Once you’ve treated for phosphates, treat your pool with a natural-based clarifier and filter it for at least 24 hours.

Drain the Pool

Check the hydrostatic pressure. Make sure there’s a hydrostatic relief valve to relieve pressure from possible groundwater. Check the water table level for your area. Failing to check this could cause your pool to pop out of the ground.

Drain to the sewer when possible. If not, drain to a grassy area such as a field to provide natural filtration.

Got questions? Contact us today. Give us a call or stop by. We are here for you!