Chlorine level safe for sewer

michelegel

Bronze Supporter
Sep 9, 2015
21
Mamaroneck, NY
Hi All - frame pool (a bit shy of 5,000 gallons) storing it for the winter.. here are my questions:
1. what is a safe level of chlorine to drain it into the storm sewers?
2. what's the best "keep it dry" material? corn starch? baking soda? How liberal do I need to be?
3. my pool is a Bestway 9' x 18' - anyone know what size garbage can I should buy to store? No known mice in the garage, but why take chances.

thanks in advance!
 

Dirk

Gold Supporter
TFP Guide
Nov 12, 2017
7,723
Central California
Pool Size
12300
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
1. Zero. You should check with your local authorities about that (maybe water company or public works). Not only will they be able to give you the best answer, but might also help you avoid a fine if you guess wrong. They won't like the salt in the water, either. Storm sewers might not even be preferred. My municipality won't let me use the storm drains or the sewer system.

Sorry, don't know on 2 and 3.
 

JJ_Tex

Bronze Supporter
Jul 17, 2019
1,869
Prosper, TX (DFW)
As dirk said, check with your local authorities. The answer will be different if your storm sewer goes to a water treatment plant, or if it goes directly into a local waterway (probably the harbor or river for you).
 
Last edited:

JoyfulNoise

TFP Expert
Platinum Supporter
May 23, 2015
17,444
Tucson, AZ
Pool Size
16000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
1. Municipalities clearly don’t understand science when they make regulations about chlorine going down the storm drains...but that should be expected from bureaucracy.... as others have said, check your local codes and if they require neutralization, then just water your lawn with the pool water.

2. Baking soda is better than cornstarch. Baking soda is inorganic and washes away easily.

3. Just fold it up and then measure it. No sense in trying to guess. My guess is you’ll need one of the big plastic contractor garbage cans.
 

PoolGate

Gold Supporter
TFP Guide
Jun 7, 2017
5,074
Damascus, MD
Pool Size
29000
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Jandy Aquapure 1400
Your chlorine should all dissipate within days of not adding more. Keep checking until it is 0, then drain. But of course, check your local laws first. You can also get chemicals that will neutralize the chlorine. I checked mine and have no restrictions on emptying a pool regardless of what is in the water.
 

Teald024

TFP Guide
There is plenty of stuff between your pool and whatever they want to protect to eat up the chlorine. There is a good chance it will just clean their pipes. But follow the regulations.....
Baking soda won’t become food for mold, and will dissolve into the water when you refill. No talc.
 

Dirk

Gold Supporter
TFP Guide
Nov 12, 2017
7,723
Central California
Pool Size
12300
Surface
Plaster
Chlorine
Salt Water Generator
SWG Type
Pentair Intellichlor IC-40
I would think salt is the bigger issue for things downstream. And what ppm is OK for a garden/lawn?