We are having some failures on water quality at home. We currently use gambro WRO hots and patients are advised to perform a ‘heat’ twice a week. Even when we have this set for automatic start we are finding water quality is above guidelines in some cases. We have tried chemical disinfectant with varying results. We now use chemical disinfectant 3 times a year.
Is there anything else I can do or is it time to bite the bullet and start replacing RO’s?
Maybe UV system. There are some for approx £100 that would be suitable.
Where are you taking the sample from?
It could be your tubing, bottles, sample ports, technique, sterilization method for sample ports - there's a lot of variables.
If you stick a UV in your system be sure to have something further down stream to catch whatever it kills.
What other info do you have about your home setup?
Thanks for the response.
We sample from the RO, the tubing is the Gambro loop so no dead legs.
I think/hope we all sample with good technique but you never know.
We sterilise the sample point and the connector in 70% alcohol.
If I were to go down this route I would look at UV prior to RO with some further filtration in-inbetween.
What other info regarding our home setup were you thinking of.
If fitting new sample ports doesn't work, do you think there might be large amounts of contamination in the pre-treatment ?
Anything after the carbon has no chlorine to reduce growth.
Over the years I have found a lot of colourless translucent jelly in RO inlet valves and tubes. Even had a couple of valves stop working due to gel blocking the bleed hole in the membrane.
Maybe replacing the hose and filter housings and replacing inlet valves would help??