Many smaller sewage treatment plants are not manned permanently but are monitored by officials in charge of other treatment plants or by someone named by the municipality. This is the situation also in the waste water treatment systems of Erlach, La Ferrière, Twann and Prèles. Their owners were looking for a possible remote service solution to quickly obtain the full pictureof all processes going on or to change parameters without the need to travel a long distance in each case. Even if a webbased SCADA system is the best possible solution, the owners should also be able to pay for the system and its maintenance. Costly investments or the maintenance of an internal server infrastructure is not what the owners can shoulder, for cost reasons. Therefore, a license for an online solution with a SCADA system in the cloud met with their intense interest.