Reverse Osmosis recommendation.

[pcmeiners]

Bacteria is pretty small. As small as .2 micron. That's why the UV is at the last stage, so if anything makes it past the filters, the UV kills it.

Agree, particles even smaller then the eye can see can shield bacteria from UV light so pre-filtering is needed before UV treatment.

On my system I have a delay relay which energizes the (2) 50 watt UV lamps 10 seconds before the well pump starts, and the lamps remain on for 10 seconds after the well pump stops.

 

[Hohn]

I'm on my 4th RO system in 16 years. The problem I had with all the box store under-sink setups was sourcing replacement filters. Don't kid yourself, the "dupont" branded unit is just brand licensed, and when the license runs out, you won't be able to get replacement filters.

Eventually I realized that if I wanted to have reliable availability of replacement parts, I needed to avoid box store type systems.
I went with a company that's actually local to me and I've been pleased with the system. Plus the business is 30 min away!

Reverse Osmosis Water Filters | Discount Filters

Get the highest filtration and improve the taste and quality of your drinking water with our wide selection of reverse osmosis water filters

www.discountfilters.com

 

[dcg9381]

On my system I have a delay relay which energizes the (2) 50 watt UV lamps 10 seconds before the well pump starts, and the lamps remain on for 10 seconds after the well pump stops.

More details on that? I've got a well controller, but I don't think I've got an advance relay function.... It'd really save bulb life, but perhaps at the cost of turning the ballast on/off a lot.

Eventually I realized that if I wanted to have reliable availability of replacement parts, I needed to avoid box store type systems.
I went with a company that's actually local to me and I've been pleased with the system. Plus the business is 30 min away!

I initially bought a fancy (don't recall the brand, but US based) RO system that didn't use a tank. It sucked because the initial TDS when you open the faucet was high. Filters were expensive.

Now I just use your basic Amazon units fresh off the boat. As far as I know most of their filter sizes are compatible.

 

[pcmeiners]

More details on that? I've got a well controller, but I don't think I've got an advance relay function.... It'd really save bulb life, but perhaps at the cost of turning the ballast on/off a lot.

My water filter project got out of hand, it all started with a decent amount of iron and manganese, and progressed on and on.....still have a bit to go. At this point I have a giant 10"x40" pre-filler, (2) 10x54" Katalox light tanks, (2) 10x54" Catalytic charcoal tanks, aeration tank, (2) low micro after-filters and a cycle stop@ sensor monitor

Have (2) stainless UV lamps housing in parallel. If they stay on all the time it heats up the water and costs roughly $170 a year in electric, then bulbs need replacement every year. So I rigged a dual timer relay to keep the well pump off for a variable amount of time, set for 10 seconds so an aeration system and my UV lamps start before the water flows. The UV bulbs need to warmup before the UV is strong enough to disinfect, thus the delay. Actual I am going to increase the delay amount to 20 seconds. I am aware switching florescent tubes on/off often is not good, Hopefully in the near future I can get LED UV lamps.

The dual timer's second delay circuit is rigged to turn off the pump if it run continuously for a variable time period, have it set for 1 hour and 30 minutes, and must be manually reset. I do not water my lawn so there is no chance I will run the water that long but a busted pipe might. My advantage is I have 160 gallon in pressure tanks, so the pump does not energize much in a day.

Like this but mine is a 24vac relay, as all my controls/devices are 24vac for safety,

Amazon.com

 

[dcg9381]

The dual timer's second delay circuit is rigged to turn off the pump if it run continuously for a variable time period, have it set for 1 hour and 30 minutes, and must be manually reset. I do not water my lawn so there is no chance I will run the water that long but a busted pipe might. My advantage is I have 160 gallon in pressure tanks, so the pump does not energize much in a day.

That sounds like the most complicated system I've seen other than "whole house RO" on houses way up on the ridge...
That "long run" safety is something that I need too, I did another thread on it. Glad to see someone else really into water.

10x40" filter is huge.... Bet that's a pain in the *** if it doesn't back flush.

 

[pcmeiners]

"That sounds like the most complicated system I've seen other than "whole house RO" on houses way up on the ridge..."

Your right, eventually I will post it on GJ, it is more complicated then I described in previous posts. As to insanity I started it using 1" copper when copper was reasonable, 2/3 of the system was built when it was not reasonable; each elbow was $10. , have more than 50 elbows, 11 valves.

This is the pre-filter I have, has no backwash, paid $300 on Ebay. Uses filter balls within a basket, requires cleaning once a year, but catches about a pounds of ferric iron/manganese. With all the filtering the only chemicals it does not catch is nitrates/nitrites which my aquifer does not have. Far cleaner than any city water, I can fill a bottle with water, 3 weeks later no sediment, wash my car or windows, not a spot .

PRM #2 304 Stainless Steel Bag Filter Housing, 2 Inch NPT Inlet, Dual Side or Bottom 2 Inch NPT Outlet, 100 psi

PRM #2 Bag Filter Housing (BFHBFL2) 304 Stainless Steel, 2" NPT, Dual Side/Bottom out, 100 psi. Sock Filter Vessel for Filtration, Remediation, Processing.

shop.prmfiltration.com