When RVs have to go...™
Frequent Asked Questions

FAQ: Frequently Asked Questions Answer

What are RV holding tanks?

Recreational Vehicles (RVs) generally have two or more waste water storage tanks into which the toilet (black water) and sink/basin/shower gray water) empty. When full, these holding tanks must be drained at holding tank dump stations.

An industry has developed around chemicals used for cleaning, sanitizing, and deodorizing waste holding tanks after they are drained. The need for cleaning these tanks is debatable, as they are designed to hold sewage, and sanitizing them while they are in frequent use is akin to sanitizing a septic tank or sewer pipe. However, RVs may be stored for extended periods of time (e.g. over winter), and in these cases cleaning of the wastewater system may be prudent. Some RVs have a black water flushing system where the use of cleaning chemicals is greatly debated.

It is worth noting that the some of the chemicals used in pipe and tank cleaning are quite noxious, and harmful to the environment if they are not disposed of properly. Holding tanks should always be emptied into the proper waste water receptacles, so the waste may be treated.

Many RV dump stations have banned the use of tank treatments containing formaldehyde, due to the damage it causes to common waste treatment systems. See Now, that most of us know about the toxic effects of Formaldehyde, Para-formaldehyde, Quaternary Ammonium Chlorides and Bronopol based holding tank products, how do we change over?

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Dump Station Types

The type of recreational vehicle dump stations you will find on Sanidumps.com include: private, public, RV park, non-park, municipal, truck stop, rest stop, campground, camping, resort, commercial, pay, donation, waste disposal, and free.

It is important to dispose of human waste properly when RVing. The RV dump station, dump point, or sanidump station you choose to empty your gray and black water holding tanks is up to you; we're hoping that you will choose an approved dump station site that's green and environmentally friendly, using an environmentally sound method.

Know Where To Dump Your Tanks

Do you need to know where to dump your holding tanks when your RV is on the road? Now you can know where the RV dump Stations are while traveling with a e-book. More information about the RV Dump Station location e-book.


Although efforts are made to make sure of the accuracy of the information presented, Sanidumps.com shall have neither liability nor responsibility to any person or entity with respect to any loss or damage caused, or alleged to be caused, directly or indirectly by the information contained here.

Sanidumps.com is not affiliated in any way with any place/location listed on this site. Fees are subject to change; availability and prices can and do change.

We thank all the RVers that have contributed information :-)

The Sanidumps.com Team

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