RO/DI Gone Awry?

[Foody]

For quite some time my filter ran quite consistently. Suddenly the filter output has increased by perhaps 30% during the same time-frame and my TDS have increased, albeit slightly. I've flushed the membrane several times and replaced the first stage (1 micron sediment filter) but my TDS are still running 8-9 instead of the previous 0-1. Any thoughts for the cause/remedy?

 

[Mpfaff77]

Maybe township is doing flushing of some sort and getting higher tds. Have you checked incoming from tap? Higher than usual?

 

[mr.maroonsalty]

Increase production would likely be from higher water preasure and/or higher temps. My product production increases a lot when my in heated basement warms up.

 

[blanden.adam]

Could also be a coincidence and your DI resin is exhausted. How old are each of the stages (including RO membreane)?

 

[Gary Majchrzak]

given all RO/DI filtration variables remain constant

given all RO/DI filtration variables remain constant

RO production varies GREATLY over the course of a year IME.
Mostly due to temperature.

It's been noted by many I know in this area that TDS of our tap follows an annual up and down cycle.

There are also daily fluctuations.

 

[RandyO]

Or maybe your membrane has a hole in it.

 

[Foody]

System is about 1 year old just now.