Well water and RODI

maksim serebro · Oct 17, 2020

Hi all, need some advice. Moving from a house with city water to a house with well water. Can i still use rodi? Is there a limit on how much water I can use? Can anyone with a well chime in? Thanks!

andrewkw · Oct 17, 2020

You are going to find as much variance between wells as city water. I knew nothing about wells when I moved into this house. My TDS tops out at about 55 and a single DI cartridge will last me an entire year making 20,30+ gallons a week. When I was on city water maybe 2-3 months tops.

There is a limit to how much water you can make but that is dependent on your well. In 4 years of well living I've only run out of water once, my wife left the hose on and forgot about it lol. Leaving RO/DI on overnight doesn't seem to be an issue. After I dunno 12hrs or so water supply was back to normal. I'm sure someone with more experience will chime in but from a clueless perspective these are my thoughts.

John08007 · Oct 17, 2020

Have you had your well tested? I would start there, may need some extra sediment filters

sfin52 · Oct 17, 2020

maksim serebro said:
Hi all, need some advice. Moving from a house with city water to a house with well water. Can i still use rodi? Is there a limit on how much water I can use? Can anyone with a well chime in? Thanks!

first step is to have tested.
Yes but your well may have a lot of co2 which will tear through the di. If this you case you will need an extra step with a ro holding container. This container needs to have an air stone to remove the co2. Than pump through di resin. Maybe a better solution but many use this way

Taylor t · Oct 17, 2020

I use well water but only RO for top off. No DI. I’ve spoken to guys that drill wells and it’s all dependent on the water tables you have access to. I have 2 tables, the shallow table is heavy iron, is really good just heavy iron, 50’ down to 250’. Next water table starts at 600’ and smells like rotten eggs, has nasty stuff in it. I’d talk to a company that is knowledgeable about water tables in your area. My opinion, if your table is good, you only need RO on a well, my experience.

John08007 · Oct 17, 2020

Taylor t said:
I use well water but only RO for top off. No DI. I’ve spoken to guys that drill wells and it’s all dependent on the water tables you have access to. I have 2 tables, the shallow table is heavy iron, is really good just heavy iron, 50’ down to 250’. Next water table starts at 600’ and smells like rotten eggs, has nasty stuff in it. I’d talk to a company that is knowledgeable about water tables in your area. My opinion, if your table is good, you only need RO on a well, my experience.

Rotten egg smell probably means there is sulfer in the water. I was in Hawaii 25 yrs ago, the volcano smells like that, they said its from the sulfer.

maksim serebro · Oct 17, 2020

Thanks everyone!

coralbeauties · Nov 18, 2020

I have well water and burn through my di resin. I got around this by installing a separate chamber for the cation and anion. I have to change out the anion after maybe 60 gallons. I regenerate it with a lye bath and reuse it over and over again. I haven’t even replaced my cation.
After these two I do run through a mix bed of resins. As long as I keep up on the anion I don’t need to replace the mixed bed chamber.
Jeff

vicefire17 · Nov 21, 2020

I live in the Great Black Swamp area and have a good well. No problems with my RODI system. It really depends on your well. Some people in my area have the “rotten egg” smell to their water and a high iron content. We got lucky and hit the sweet spot for a well.

John08007 · Nov 21, 2020

vicefire17 said:
I live in the Great Black Swamp area and have a good well. No problems with my RODI system. It really depends on your well. Some people in my area have the “rotten egg” smell to their water and a high iron content. We got lucky and hit the sweet spot for a well.

Great black swamp, that sounds interesting, where's this at?

vicefire17 · Nov 24, 2020

John08007 said:
Great black swamp, that sounds interesting, where's this at?

Lake Erie area near Toledo Ohio. Region was known as The Great Black Swamp

John08007 · Nov 24, 2020

vicefire17 said:
Lake Erie area near Toledo Ohio. Region was known as The Great Black Swamp

Interesting, never knew this. Looking at Google satalite view there are still a lot of lakes w and sw of toledo. Suppose from the swamp

mtfish · Nov 24, 2020

coralbeauties said:
I have well water and burn through my di resin. I got around this by installing a separate chamber for the cation and anion. I have to change out the anion after maybe 60 gallons. I regenerate it with a lye bath and reuse it over and over again. I haven’t even replaced my cation.
After these two I do run through a mix bed of resins. As long as I keep up on the anion I don’t need to replace the mixed bed chamber.
Jeff

This has been my exact experience with my well water.