# Coffee Grounds Down Kitchen Sink?

**URL:** <https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010>\
**Category:** In My Humble Opinion\
**Created:** [October 22, 2010, 2:52pm UTC](https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010 "2010-10-22T14:52:54Z")\
**Posts on this page:** 5\
**Page:** 2

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**Author:** ![LiveFree](https://avatars.discourse-cdn.com/v4/letter/l/5e9695/32.png) [@LiveFree](https://boards.straightdope.com/u/LiveFree)\
**Post date:** [February 13, 2015, 10:54am UTC](https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010/21 "2015-02-13T10:54:35Z")

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Not with a septic system. They are not meant for garbage.

[![](http://tinypic.com/images/goodbye.jpg) ](http://tinypic.com/images/goodbye.jpg)

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**Author:** ![bienville](https://avatars.discourse-cdn.com/v4/letter/b/4bbf92/32.png) [@bienville](https://boards.straightdope.com/u/bienville)\
**Post date:** [February 13, 2015, 1:19pm UTC](https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010/22 "2015-02-13T13:19:16Z")

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> [@dolphinboy](#):
>
> Thanks. That’s what I thought. Now I just need a tactful way of telling my wife she is wrong… which won’t be easy.

Well, if she refuses to change her ways you’ll certainly have grounds for divorce.

Yes, I know it’s a revived Zombie Thread but I couldn’t resist!

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**Author:** ![Musicat](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/musicat/32/20189_2.png) [@Musicat](https://boards.straightdope.com/u/Musicat)\
**Post date:** [February 13, 2015, 2:23pm UTC](https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010/23 "2015-02-13T14:23:22Z")

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> [@dolphinboy](#):
>
> Thanks. That’s what I thought. Now I just need a tactful way of telling my wife she is wrong… which won’t be easy.

So, 4 years later, how easy was it? Are you still married?

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**Author:** ![johnpost](https://avatars.discourse-cdn.com/v4/letter/j/f17d59/32.png) [@johnpost](https://boards.straightdope.com/u/johnpost)\
**Post date:** [February 13, 2015, 3:28pm UTC](https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010/24 "2015-02-13T15:28:37Z")

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zombie or no

more questions

garbage or compost?

instant or still drip?

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**Author:** ![ftg](https://sea3.discourse-cdn.com/straightdope/user_avatar/boards.straightdope.com/ftg/32/2801_2.png) [@ftg](https://boards.straightdope.com/u/ftg)\
**Post date:** [February 13, 2015, 10:39pm UTC](https://boards.straightdope.com/t/coffee-grounds-down-kitchen-sink/558010/25 "2015-02-13T22:39:05Z")

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> [@jtimothydotson](#):
>
> If you do not have a septic system, coffee grounds are perfect for putting down your sink with running hot water.

They are just as bad for a sewer system. They don’t break down like regular human waste and will cause a problem at the sewage plant. And will contribute to those expensive to clear grease+other junk blobs in the pipes that cost cities a fortune to clear out.

It doesn’t matter if it’s a septic system or a sewer system, the advice given above about keeping it to the substances they are designed for is a must.

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