Cistern – What to do?
I posted previously that we discovered that we had a cistern under a mound of ivy and brush. I mentioned that I had heard that we had a
cistern, but I thought it was in a different place.
Well, guess what? There was a cistern in that place. Yep, we have two cisterns.
The Discovery
We were redoing a large patio. In the process of digging up
the old pavers we discovered what looked like a manhole cover. We cleared the
area around it and were able to open it with a crowbar. This one is about 12’
deep and appears to be a lot larger around than the first one. It is full of
water, so it is hard to tell exactly how large.
So, what now?
I did some research to find out what others have done. Some
talked about filling them with dirt or other solid material and rendering them useless.
One guy wanted to build an access from his basement to his empty cistern and
build a wine room. Interesting idea, but I want to use mine. I like to try to
be “green” when I can and I look at these thousands of gallons of rain water as
a resource. I learned pretty quick that you don’t want to drink the water from
the cistern or even use it to water vegetable and/or fruit plants. However, it
can be used to water the lawn. I estimate that about 30% of our overall water
usage is for watering our lawn, so this seems like a great idea. After talking
with irrigation companies, landscape companies, companies that specialize in
well pumps even a few plumbers I did not find anyone who could help me get this
water out of the cistern and use it to water the lawn. I was not looking for
anything fancy because I don’t know for sure that the cisterns are filling back
up with water at this point. I finally got fed up and just went to Lowes and
bought a small 1 HP pump that runs on electricity.
Using Cistern Water to Water the Lawn
It works great! I used the one cistern to water my lawn for
a couple of weeks and the water lever barely went down at all. So, when the
lawn needs water I pull out the pump, connect the hoses and water away.
The Challenge
The Solution
I also put a plastic filter on the end of the hose that went
into the cistern to prevent any larger rocks or other debris from going into
the hose. On the flower bed end of the PVC I put a 90 degree elbow, an
additional two feet of PVC and angled it straight up. I added a standard male hose
connector to both ends of the PVC.
Hoses don’t typically come in 12’ lengths, so I ended up
buying a 50’ hose and cutting it. I was able to add standard connectors to the
ends of the custom length of hose. I used the majority of the left over hose to
connect to the flowerbed end of the PVC and run that length of hose directly to
the pump.
In The End
I am able to use the cistern to water my lawn. Unfortunately,
it is a bit of a pain to pull out the pump, prime the pump, connect one end of
the pump to the cistern, plug the other end of the pump to a hose/sprinkler and
plug the pump into a power source. At the end of the day I gladly do it.