I thought pure water was damaging to pressure washers?
The only problem we have is the pressure hoses - because we take out all impurities, they rust a bit on the insides and end up splitting sooner than they should!
Ordinary water would coat them over time with lime etc so they would last a lot longer.
We have six Kranzle pressure washers, and in over 1 year, we have had no problems or downtime with any of them. The carwash (6 pressure washers) cleans over 100 cars per day, and the buy time self service machine cleans about 60 per day. The buytime machine was made and sigwritten in Bedford, and was shipped over to Bulgaria - what a job that was