After you try to wipe away debris by hand, pour water down the drain and use a plunger, it’s time to turn to a chemical drain cleaner. Learn more about effective ways to clean drains from this article.

Do you need to hire a plumber to unclog your drain? Learn how you can unblock drains yourself in this article.

How dangerous is sewage? Sewage that is left untreated can have a deadly impact on the environment. Learn how dangerous sewage is in this article.

How do urban waste water systems work? Learn how urban waste water treatment facilities work in this article.

A friend told me that the bad smell coming from my toilet indicates that the seal under the toilet is broken and needs to be replaced. He also said that I could probably do the job myself. I'd like to try. So how do you replace the seal underneath the toilet?

How do you use a pipe wrench? Visit HowStuffWorks.com to learn how to use a pipe wrench.

You've probably experienced a clogged drain before and reached for the drain cleaner. But how do drain cleaners work?

A septic tank requires a good cleaning to flush out sludge and scum, which don't drain like effluent. Learn how a septic tank works and what's in septage.

Each time you flush the toilet or wash something down the sink's drain, you create sewage (also known in polite society as wastewater). Find out where it goes and how it's treated before it flows into a river near you!

Sump pumps help keep your basement or crawlspace dry. Learn how to find out whether you need a sump pump and how to choose and maintain one.