Reddit reviews Liberty Pumps SJ10 SumpJet Water Powered Back-Up Pump, GRAY

You got city water???? Water powered backup pump!!!!!

Example https://www.amazon.ca/gp/aw/d/B0013H94MO/ref=mp_s_a_1_1?ie=UTF8&qid=1519349285&sr=8-1&pi=AC_SX236_SY340_FMwebp_QL65&keywords=water+powered+sump+pump&dpPl=1&dpID=31fEc3IpodL&ref=plSrch

Some use like 1 gallon of water to push 2 gallons out.

I have a battery back up one. This is my next purchase. Batteries can fail or die. Your city water will always be on.

However for the sewage I wouldn't use your below grade pumping during an outage.

If you have city water, a better and more reliable option is having a water powered backup sump pump. It requires no electricity and works by using the pressure in your water lines. I find this to be a better and more reliable option because battery backups have two main issues: sometimes the batteries go bad, happened to my father, he had a battery backup that hadn't been used in years, and when it was finally needed, the battery was dead and we were down there bailing out the basement using buckets. The other reason I recommend water powered backup sump is in the case of extended power outages. After the first fiasco, my dad installed the water powered backup sump, which was the best thing he could have done, because a year later we got hit with Hurricane Sandy and wound up without power for 2 weeks. A battery backup would not have lasted long enough to keep the sump running that long, but the water powered backup doesn't need any electricity, so it didn't matter, it kept the basement dry the whole time. They aren't that expensive, nor are they that difficult to install, the only requirement is that you are on city water and not a well.

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This is the one we have: https://www.amazon.com/Liberty-Pumps-SJ10-Discharge-SumpJet/dp/B0013H94MO/ref=sr_1_3?ie=UTF8&qid=1537969458&sr=8-3&keywords=water+powered+sump+pump

Plumber here, buy this pump and this check valve . For your backup,it is a bit pricey but if you are on city water (well water wont work in the event of a power outage) I would recomend this pump It is powered by a stream of water so you don't have to worry about battery maintenance.

I haven't researched it yet. And since her daughter divorced me, I can't exactly call and ask :)

I'm pretty sure it's something like this:

http://www.amazon.com/dp/B0013H94MO

Though on this one I'd want professional installation. Get that one wrong and it could be very bad.

I have a water-powered backup that I have been really happy with. Link

Or a water powered sump pump.

Fyi this is not the one I ended up with, I can't find the one I got. But this one is very highly rated. In any event, do your research for the one that's best for you. I actually hired a plumber to do the job through Amazon installation. It was.... ok.

Liberty Pumps SJ10 1-1/2-Inch Discharge SumpJet Water Powered Back-Up Pump https://www.amazon.com/dp/B0013H94MO

Thanks for the update! The discharge pipe is 1.5 inches, pit is about 22 inches deep, 18 inches in diameter. The current pump has worked fine for ~10 years now, but the power outage ruined that streak. I just figured since the 3/4 was essentially the same price as the comparable 1/2 I would go with that, didn't realize the other factors to consider that you mentioned.

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I'm now debating on whether to go with a battery backup combo unit or water powered backup. Someone else recommended the Wayne WSS30V 1/2 HP Combination System which seems like it may be the perfect replacement. Looks like it recommends a 75Ah deep cycle battery. The one from Wayne is $270, but I found this Duracell Ultra Deep Cycle Battery for 12V Sump Pump for about ~$100. Would this be sufficient to use? That would put the system at about $550.

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The other option would be to get a solo 1/2 HP pump like this Wayne CDU800 and Liberty Pumps SJ10 water powered backup. Comes out to about $350, but that doesn't count for having a plumber install the Liberty, and I have no idea what that would roughly cost, maybe you would know?

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I think these are my two best options, just unsure on which route to go.