This is my property filtration and Chlorination room I've built, and because this isn't my thread, I'll do my best to keep it contained to a single post.
I'm used to living lakeside. I'm also used to living in exceptionally sparsely populated areas. That equates into a situation where I need to think big due to self-sustainability.
The system I've build contains two submersible pumps about 200-300' from shore at the bottom of the lake. I have a 240V transfer switch that I use to go back and forth between the pumps. They are not used simultaneously; one is for backup. I go back and forth just to ensure both are always working.
I draw water from the lake, and it gets forced into 100 gal tank #1. This is the non-purified tank. I have two 2" lines out of this tank. One goes to direct draw, the other leads to the filtration/Cl system. We'll focus on the Cl(orine) path.
There are four other 100 gal tanks in use. Three are for purified water, the other is to store water for irrigation and forest fire suppression and it is unfiltered.
When the water pressure drops (in my home for example), water is drawn from tank #1, and it goes through a pipe where it is injected with a Cl/H2O mixture. I maintain the Cl/H2O at 4-5% most of the year, but up it to ~7% late spring/early summer, because I live at the bottom of a mountain range and the shore of a lake, and at that time of year, contaminants from snow runoff, combined with algae require the higher dose.
Once the Cl injector pump (I have two, one for backup) injects into the stream, the water goes through two different sized particulate filters, and are eventually stored in the three remaining 100 gal storage tanks. Unless in bypass mode, the main line between tank #1 and the rest of the tanks has a pressure tank attached (I call them bubble tanks, because it has a rubber balloon inside).
I've got shutoffs between nearly everything, and I've got a NC (Normally Closed) electrical water shutoff switch on the output of the system. If electricity goes off, so does the water (because the NC switch closes). This ensures that if electricity goes out, pressure will remain in the water system, and of course I'll be alerted. I need to take manual intervention at this point.
The whole thing is overkill for this property, but I'm only here temporarily until I can find another property to buy up north (I was forced out due to forest fire lire last year). All of the tanks were accessible to me in advance, as was almost all of the plumbing materials. Some of the plumbing I dug underground so that I wasn't tripping over it, the rest can be seen in the pics.
When the water comes out of the tap in my house, it's ~42 PPM, and 7.2 pH (at this moment in time... it can range 30-150PPM and 6.7-7.3pH).
Having 300 gallons of purified water, 100 gallons of unpurified water (pre-Cl tank) and 100 gallons of unpurified water (irrigation/suppresion tank) is a huge thing. In power out situations, I disable my NC shutoff to be open by means of short-circuit trickery, and all of that water is available to me anywhere on my property. Since I've lived here, I haven't had to, but if I ever used up all of that water and power is still out, I would just connect the pumps themselves to my 9600W gas generator I use for powering my grow lights in the same situation.
Pics. To the right is the tank where the pumps first pump into. The pressure switch (grey box) turns on the switch if the Pounds Per Square Inch (PSI) goes below 45, and shuts off when it hits 62 PSI. The black tank next to it isn't inline; it's off to the side. It's job is to expel particulates twice per day. The two blue canisters on the wall are particulate filters, large to small, right to left.
Yellow 55 gal drum is the Cl and H2O mixture. I mix it by hand. All of the silver tanks to the left are Chlorinated and filtered storage tanks. Blue tank is the pressure tank.
View attachment 4557416
The three purified storage tanks:
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This is the irrigation (for my outdoor gardens, truck washing, whatever else) tank. It is unpurified:
View attachment 4557434
Unfortunately, my wife made some hash and convinced me to get high in the daytime which I don't often do, so I forget what I was posting about. Anyway, hopefully it all made some sense.