For anyone who has something in place, if for some reason you would lose your water supply, what /how do you do?

I know that you can get tanker trucks of water but, how do you supply it to your RO and at managable pressures?

Chuck

Hello, we have a dedicated water line from the exterior of the building to our supply system, basically it looks like a fire hose outlet. We have a system in place with a tanker truck company. We have pressure regulators in place to minimize over pressurization of the onboard tanker's water pump.
As we have an enormous product water holding tank, this affords us plenty of opportunity to switch over from one tanker to the next with out disrupting service to the unit.
We have also put in place an emergency water supply procedure where the water is sampled more frequently, as the water being supplied is supposedly potable, but we still have to make sure a chlorine slug doesn't wipe out the activate carbon filtration.
Hope this helps

If you bring in a tanker truck of water or use a different water supply, this new water may have come from a different water source. Therefore, you need to take a water sample to ensure your system is meeting the AAMI chemical limits with this new water. You wont have the results back before you use the water, so, hopefully, the results will be acceptable.

Thank you Florian
We have a seperate sampling port to measure the emergency "raw" water, our biggest issue here on the West Coast is biologic not chemical (other than the chlorine used to make the water potable), so yes we will be measuring chemical composition, however, the filtration pressure gradients and chlorine breakthrough are our biggest concerns.
PS the water source will be similar, lake water, just not as polished as we get out of the tap.

Hey Chuck,

I have arrangements with a local dairy that will deliver a heat disinfected tanker of potable well water. Their wells are tested monthly for general chemistry, nutrients, solids, metals and coliforms--these reports are readily available to me.

As luck may have it, the dairy is in my hometown--and the director of operations lives in my hometown. So I've been able to establish a good rapport with him. He took me for a tour and showed me the entire process of how the tankers are cleaned, disinfected, and filled. He let me take my pick of which style q/d fitting truck attachment to take back with me.

I reduced the hose end of the coupling down to 1" and barbed on a length of gray braided pvc. The other end of that hose is fitted with a cam-lock connector that I will attach to either of two valves (one pre-booster pump, and one post) that I tee'd into the pre-treatment.

You mentioned maintaining enough pressure to run your RO. Ofcourse you realize the amount of waste involved with running RO. Your lack of water in the first place indicates a strong desire to conserve, and your supply is limited to what's in the tanker. With that said, the best option--in my opinion--would be to use DI.

The tankers have gate valves, which makes it quite easy to control the pressure. As the level in the tanker decreases--the feed pressure will obviuosly decrease as well. If that becomes an issue, I suppose one answer would be to have an additional feed on your booster pump--if you have them--if not, maybe consider purchasing one as part of your contingency plan.

When I was researching all of this. Somebody suggested the option of getting a tanker of DI water, instead of potable water. I don't know the likeliness of finding an industry that has an existing use for such--and can only imagine the expense. The only cost to me for potable water is gratuity to the driver and maybe a hot cup o' java.

Now, keep in mind I haven't yet had the opportunity to put this process to the test. So, right now it's strictly theoretical, and I hope to keep it that way!

Take care,
Dave

Very interesting question. Water supply is lost. It is similar to electricity is lost.

You can always design a backup system in case the water supply is lost. If you truck the water in, u can use a pump to boost the pressure.

What do u do if the electricity is lost? Have a bcak-up generator?

Back-up generator - yes. Tested weekly.

chuck,
probably not a good one, but another option is using a well.