RODI filter system - waste-water ratio question

[higorc]

Hi Guys, I am trying to find out who has the most effective (best waste water ratio) filter system in the market for a decent price.

Short version of my dilemma is that is that I bought a house and now have a water bill unlike before when I was renting.

I have owned a Filter Direct RODI (https://www.ebay.com/itm/REEF-HOME-...354291?hash=item2ec0d006b3:g:Hp8AAOxy06RRGy3o) systems for years now, and it's a great system but now that I pay for my own water the 4:1 water waste ration is kind of freaking me out a bit.

I have been doing some digging around and came across the Spectrapure RODI filters, in particular 2 of them. One with 2:1 waste ratio in the mid $300 range and another 1:1 waste ratio (https://www.spectrapure.com/product...-water-ratio-ro-di-system-mmc-rodi-100-pplus/) for $600.

I was wondering if any one here has experience with low waste ratio units such as these and if it's worth it. I haven't gotten my first water bill yet but it scares me that for every 35G barrel of water I'm making I am pouring 4 down the drain.

Any help is appreciated.
Thanks!

 

[Geebs19]

I use the BRS 6 Stage 150/day water saver it has ratio of 1.5/1, I actually think I was getting better then that with pressure of 90.

 

[JoshH]

I'll be honest, you probably won't see a massive reduction in your water bill $$$ wise. I would say do the math and figure out how much your current system is costing you monthly. And then figure out how much water you'd be saving and work it out from there. You're probably going to find out that it will take you a few years to make up the cost of a new system. Now this all depends on how much water costs in your area and especially what they charge for waste water.

If you do find you feel it's worth investing in a new system. Look into a system like @Geebs19 has, a dual RO membrane system is FAR more ideal reducing your waste than running a membrane at 1:1 or even 2:1. The ratio is there to help prevent your membrane from clogging prematurely and while I will always recommend Spectrapure over pretty much every other system, I'm not a particular fan of running membranes at such a low product to waste ratio.

Before purchasing a new system if you wish to, figure out your water pressure coming into your house as well as your incoming TDS. This will help select a system with features best suited for your needs.

I will add you can purchase a new flow restrictor to reduce your current product to waste ratio to 3:1 to save a little bit if you wish, it's only $15 and will save you on 20% of your water consumption.

And Hey, congratulations on the new house!!!!

 

[higorc]

I use the BRS 6 Stage 150/day water saver it has ratio of 1.5/1, I actually think I was getting better then that with pressure of 90.

I'll take a look at that system as well. I have very good water pressure, the pressure gauge reads 100 when system is off and about 85 when I am making water.

I'll be honest, you probably won't see a massive reduction in your water bill $$$ wise. I would say do the math and figure out how much your current system is costing you monthly. And the figure out how much water you'd be saving and work it out from there. You're probably going to find out that it will take you a few years to make up the cost of a new system. Now this all depends on how much water costs in your area and especially what they charge for waste water.

If you do find you feel it's worth investing in a new system. Look into a system like @Geebs19 has, a dual RO membrane system is FAR more ideal reducing your waste than running a membrane at 1:1 or even 2:1. The ratio is there to help prevent your membrane from clogging prematurely and while I will always recommend Spectrapure over pretty much every other system, I'm not a particular fan of running membranes at such a low product to waste ratio.

Before purchasing a new system if you wish to, figure out your water pressure coming into your house as well as your incoming TDS. This will help select a system with features best suited for your needs.

Pressure gauge reads 100 when the system isn't running and about 85 when I am making water, I haven't really tested the TDS coming in, so I'll look into that. I hope you are right about a few hundred gallons of waste water not being a big deal, you are not the first one to say that. Where I live they charge the water and sewer together, like in "tiers" twice a year.

I should be getting my first water bill next month. I am just nervous so I wanted to get a head start looking into more efficient systems so I can decide if it's worth dropping more money into it.

Thanks though, that was good info and perspective

 

[JoshH]

I'll take a look at that system as well. I have very good water pressure, the pressure gauge reads 100 when system is off and about 85 when I am making water.




Pressure gauge reads 100 when the system isn't running and about 85 when I am making water, I haven't really tested the TDS coming in, so I'll look into that. I hope you are right about a few hundred gallons of waste water not being a big deal, you are not the first one to say that. Where I live they charge the water and sewer together, like in "tiers" twice a year.

I should be getting my first water bill next month. I am just nervous so I wanted to get a head start looking into more efficient systems so I can decide if it's worth dropping more money into it.

Thanks though, that was good info and perspective

Any time, If you have any more questions feel free to ask me. I will add that your incoming TDS can be a big factor when deciding to go to a dual membrane system or not but I don't think you'll have too much concern there given where you live.

And just so you know I currently run a Dual spectrapure plus membrane setup (Both membranes with a 3:1 product to waste ratio) with 3 Stage DI. You do have the pressure to run a Dual membrane setup so you already have that going for you.