We have three POU RO units in a business location. Two on the first floor and on one the 2nd floor. Identical machines and Ro assemblies prepped by the same tech and installed the same day.
The customer is telling us the water from the two units on the first floor tatses "chalky". Our service tech - 15 years on the job - went out there and tasted the water and agrees that it does taste chalky.
The machine on the 2nd floor is just fine. All three units have a product water TDS of 13-15 so the RO is working.
The only wild card we can come up with is that the location has very high water pressure.
Any ideas or should I just "chalk" this one up as a mystery?