Draining outdoor hot tub into downspouts

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Old 09-15-09, 04:59 AM
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Draining outdoor hot tub into downspouts

Can I drain my hot tub into my eaves downspout? Our town has separate storm and waste. I want an alternative to draining it out to the driveway, across the sidewalks and onto the street.
Could that much water cause damage to the downspout pipes below the ground?
 
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Old 09-15-09, 08:06 AM
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A lot would depend on the condition of the pipes and what you use to drain the hottub.The smaller the drain hose the slower the water flow which would mean less likelihood of damage but also a longer drain time.A larger hose would take less time to drain but put more water down the drain pipes at one time which possibly could cause damage if the pipes are not in good condition etc.
 
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Old 09-15-09, 08:32 AM
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Where do the downspout drains go eventually? In most modern areas, they go into the storm system.

Some warm water (105F I assume) going into a functioning drain system below ground should not be a problem unless you overload it. The ground will quickly moderate the temperature. A hot tub may seem hot, but that is when you are in it, but it is really not that hot to most materials.
 
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Old 09-15-09, 08:59 AM
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The pipes go into the storm sewer system and I have a small submersible pump with a garden hose discharge so the flow isn't any greater than a partially open faucet. I think I'll give it a try. Thanks.
 
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Old 09-15-09, 10:01 AM
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That would be far less then the amount of water in a heavy rain. Temperature shouldn't be a problem but couldn't you shut the heater off a day before draining?
 
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Old 09-15-09, 10:07 AM
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Shutting off the heater a day before is what I'll do. Thanks.
 
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Old 09-15-09, 06:27 PM
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Hot tubs should be drained only to sanitary sewers because hot tubs use chemicals to control biological growth and storm drains often drain directly to streams that have fish or other animals.
 
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