The urine thus collected will be used by students of the said institution to conduct practical research on urine scaling.

On this project Grontmij cooperates  with Stowa, Dyka Plastic Pipe Systems, the Municipality of Zwolle, Water Board Groot Salland and Windesheim University of Applied Sciences The declaration of intent was endorsed on 30 May at a festive gathering. The start of the project was graced by a performance by students, during which they portrayed, each in his or her own manner, the New Way to Pee.
 
The new way to pee
‘New Sanitation’ or 'The new way to pee' appears to be increasingly becoming a success story. The crux of the matter is that separation at the source could possibly be a much more effective solution to our waste water problem. A large number of urine separation projects are currently underway across the Netherlands. In these projects, a great deal of attention is devoted to the collection and processing of urine. Despite constituting less that 1% of the total volume of waste water, urine contains 75% of all nitrate, 50% of the phosphate as well as much of the medicine residue and hormones. Grontmij is involved in most of the projects in the Netherlands.  
 
The project at Windesheim is of crucial importance as far as the further development of the new sanitation is concerned. This is the largest project of its kind in all of the Netherlands and an entirely new Sealskin toilet is being used. Furthermore, research is being conducted on what is probably one of the greatest problems related to the collection of urine, namely urine scaling. Pipes, constructions and maintenance methods are being tested in conjunction with Dyka, using the expertise acquired from the Swiss EAWAG (Swiss Federal Institute of Aquatic Science and Technology).