Frequently Asked Questions

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Frequently Asked Questions

If you are new to our products, this blog post will cover the basic need to knows.


What’s the difference in user experience between Green Flush restrooms and regular flush restrooms?


No difference. Green Flush restrooms have sinks, flush toilets, and urinals, without the presence of sewer gases, just like other flush restrooms.


Are Green Flush modular restrooms equal to the quality of site-built restrooms?


Yes.  All Green Flush restrooms are commercial quality, built to withstand decades of the hard use and abuse public restrooms encounter.


What utility connections are needed?


No connections are needed. Sewer, water, and electrical can be connected to our buildings but they are not needed to provide flush toilets and sinks. 12VDC electrical fixtures can be connected to solar panels or operated off deep-cycle batteries.  On-board water tanks can provide potable water to the sink and flush water to the toilet.


How long does it take to get a restroom?


It typically takes six months for a restroom to be delivered after it is ordered – two months for drawings and engineering, two months for plan approval, and two months for construction. The greatest variation is with plan approval which can vary from days to months.

It should be noted that for most site-built projects, planning, engineering, drawings, and permits are done before the project is awarded.  This usually takes many months.  With modular construction, these steps occur after the purchase decision is made.


What happens to the waste water?


Waste water is stored in the sealed sewage vault below the floor. It will need to be pumped by a pump truck. Pumping services are easily found throughout the country even in rural areas. You can find the trucks by searching for sewer pump truck or septic pump truck.


How do I supply water to the restroom?


  • Connect to pressurized potable water. This will provide all of the water and reduce the cost of the restroom.
  • Connect to pressurized non-potable water such as irrigation water. This will provide all of the water for the toilet and reduce the cost of the restroom. Small amounts of water will need to be hauled to the potable water tank supplying the sink.
  • If a potable water spigot is within a couple hundred feet you can string a hose to the restroom to refill both the potable water tank and the flush water vault.
  • Rainwater can be collected to provide some or perhaps most of the water for the toilet. The rest of the water needed for the toilet and the sink will need to be hauled. Excess rainwater will drain out to the side of the building.
  • If none of the above are options then all of the water for the restroom will need to be hauled. Water trucks can be hired to supply potable water to the restroom, our you can haul your own water with the purchase of an inexpensive water trailer.


How much does it cost to maintain a restroom?


The service of a pump truck is needed to periodically empty the vault under the building that holds the sewage. Pumping costs will vary depending on the vendor.  The average of what we have seen is about $0.20 for every restroom use.

Water delivery services also vary depending on the vendor. The average of what we have seen is around $0.16 for every restroom use.


How much can I customize a Green Flush restroom building to meet my specific needs/requirements?


Here’s some ways that our restrooms can be customized by adding:  a covered porch, custom siding, stone facing, metal roofing, ceramic floor, wall tile, stained concrete; skylights, rainwater collection, drinking fountains, hot water, heat, lights, fans, stainless steel fixtures, automatic door locks, and more.


Here is a complete list of interior finishes, siding and roofing.


How much will the restroom cost?


Cost depends upon model, options, and your location.  If you call us, we can give you a price range quickly.  Generally, our restrooms cost considerably less than site-built public restrooms connected to site utilities.  This is due to savings from factory production efficiencies and because sewer lines, septic tanks, drain fields, and septic permits are not required.  Often, our installed restrooms cost less than just the cost of installing or connecting to site utilities.

The solar power option may be much less than connecting to grid power service (if available at all). On-board water may be much less than installing a well or connecting to public water (if available at all).


Do Green Flush restrooms ever smell bad? 


Since our restroom cabins are completely sealed from the sewage vault below the floor, we guarantee that sewage odors will never penetrate into the cabins.


What does the install process look like?



How do I find out more?


Call us at (360) 718-7595, or by email at



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