I have a 130' well with the pump at about 115', 6" casing, and a
recharge rate of between 3 and 3.5 gpm. Current delivery system uses
a 1/2 HP submersible well pump to deliver to an old galvanized
pressure tank with 30/50 setting.
Unfortunately, there are 5 people and a half acre of land that all
want to use this water and the system can't always keep up. A 1/2"
garden hose carelessly left on can (and has!) empty the well in a
couple of hours. To prevent this in the future, I am modifying the
system by adding an atmospheric storage tank, booster pump and new
I've already bought a 1100 gal poly storage tank and installed it
where it will go. However, I thought I should get a reality check on
my planned layout from those who have done this before.
The system as I envision it will go something like
well pump -> flow restrictor (3gpm) -> check valve -> storage tank ->
booster pump -> pressure tank -> house, etc.
The flow restrictor will be to keep the delivery to the storage tank
within the recharge rate of the well. The well pump will be
controlled by a float switch. The booster pump by a pressure switch
with an additional float switch to prevent pumping the storage tank
dry. At some future point, there will be a filter between the
pressure tank and the house, but that's a separate project.
The booster pump will have to provide 12-15 gpm at a maximum lift of
about 20' (the second floor) and roughly 30 psi.
To preempt any "why don't you have a professional do this" I will say
that I got a couple of bids and they wanted about $3000 more than I've
got (bids in the $4500 range). So that option isn't available right
So what I need from the kind readers of these newsgroups is
1) an opinion on whether you think it'll work and any suggestions you
might have on how to make it work better.
2) a recommendation on pump manufacturers as to reliability and
affordability. As far as I can tell from reading these groups, Goulds
and Grundfos get the thumbs up most of the time, but what I'm trying
to determine is whether there are other pumps that will do a decent
job at a lower price. To make this clearer, I've been told that you
can get 30 years of reliable service out of a Goulds, but they cost
about $600. What I want to know is if there is a pump that will give
me, say 15-20 years of good service at $300-350? This is after all an
easily accessible and therefore replacable pump.