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Posted by franz fripplfrappl on June 27, 2008, 11:49 am
On Fri, 27 Jun 2008 08:19:00 -0700, JJ wrote:
> We're on well and septic. Last year we developed a sulfur smell in our
> water - but only some taps and only the cold water - if you ran the
> water for a while, the sulfur smell would dissipate. I figured it was
> probably bacteria that took up residence in the pipes. I shocked the
> system and ran the chlorinated water through all the taps and let it sit
> for a day before flushing the system. That cleared up the problem.
>
> Now the smell has returned, but it is predominantly noticed in the hot
> water. If bacteria have set up shop in the water heater, I want to make
> sure that I chlorinate them fully.
>
> We've got a big 80 gal electric water heater. My question is, what's
> the best way to get the chlorine saturated through the hot water system
> and what's the best way to flush it again? We have one outdoor tap that
> is connected to the hot water, so I could run the water through there
> and back into the well head to get it fully saturated. But once I get 80
> gal. of chlorinated water in a tank, I'm suspicious about how long it
> will take to get the chlorine flushed from there by simply running water
> through the hot water spigot. Is it better to drain the water from the
> water heater tank (there is a valve at the bottom) and at what point in
> the process?
>
> One complication is that we have a very low refresh rate on our well
> (only about 1.75 GPM) and our well casing only holds about 35 gal of
> water when full (up to the level of the water table). That means that I
> if close the intake at the top of the water heater and drain it, when I
> re-open the intake I have to be careful to open it only a little bit.
> If I open it fully, it will fill up the tank at many GPM and I'll dredge
> the bottom of the well before the tank is full and end up with a bunch
> of gunk in there. Of course, I can't see how fast the water tank is
> filling up. I have no idea how fast the water gets pumped into the
> water heater tank with the valve open full - only that it's fast enough
> to drain the well casing before the tank fills up (done it before).
>
> Any advice on the best way to get this done appreciated.
>
> Thanks.
>
> -JJ
I just did this to mine. Here's one reference that helped
http://www.dnr.state.wi.us/org/water/dwg/febact.htm
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Franz Fripplfrappl
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