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Two New Systems for Pumping Out Vault Toilets

[photo] A worker in white hazardous material clothing using a pump on a vault toilet system in a forested area.While septic tank service companies pump out most USDA Forest Service vault toilets, these companies do not serve remote locations. USDA Forest Service personnel empty vault toilets in remote areas, often with unsuitable or outdated equipment. SDTDC developed specifications for a small vacuum pump service unit that will empty vault toilets.

A tech tip, Portable Vault Toilet Service Unit (0423–1304P–SDTDC), describes two different trailer-mounted vacuum pump systems available commercially that can do the job. Both feature a 500-gallon waste tank. One system has a 200-gallon clean water tank; the other system has a 500-gallon clean water tank.

Electronic versions of the tech tip can be found at:

For more information about these portable vault toilet service systems, contact Brenda Land, project leader (phone: 909–599–1267, ext. 219; e-mail:

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