I am surprised to hear that about the Delta. I've have many Delta faucets I don't recall ever having a leaky Delta faucet. I wonder if the problem lies with the user -- only a soft pull is needed to move a one-lever Delta, she might be yanking it to turn it on. If she's one of those sorts and can't be trained to be gentle, get a cheapie faucet because no matter what you buy you're going to be replacing it.

When I had my kitchen renovated a few years ago; I chose a Kohler Koi kitchen faucet that I love; it is a true workhorse! I researched kitchen faucets and read lots of reviews. The Koi single-lever handle is simple to use and makes adjusting water temperature easy. The high-arch swivel spout offers superior clearance for filling pitchers and cleaning.
The two-function pull-down sprayhead allows you to switch from aerated stream to a sweep spray. The ceramic disc valves exceed industry standards for a lifetime of performance. The sweep spray features specially angled nozzles that form a wide, powerful blade of water to sweep your dishes and sink clean. The secure docking system locks the sprayhead into place when not in use. The sprayface features an easy-to-clean surface that withstands mineral buildup. It also Includes a soap/lotion dispenser. The finish, featuring ScratchShield® technology, withstands the toughest daily use.

Same experience here with a Delta faucet. Every six months would have to fix it. Hated that thing & if you dig online, you’ll find it’s not uncommon now with Delta. So after researching, settled on a Gerber. There weren’t tons of reviews, but also not tons of negative ones and one review was from a plumber who had good results with ones that got high use that he installed. I too wasn’t worried about trendy, more functional & something I could easily turn on & off with the back of a hand or even elbow. Got the Antioch which might not work in your case, but the Viper looks like you could hook a hose up to it. I got mine on sale and got the chrome finish to save even more money.

Perhaps you should install a commercial faucet. Examples: American Standard, Elkay, Moen. You didn't describe the faucet holes. Owners seem to like this Moen 8287.

@wdccruise, I’m not the OP, but am curious. For a typical residence (not a rental or high-use one), why would one need to install a commercial faucet? Are they really sturdier or different than other faucets? Genuinely asking as someone who has never dealt with anything as crappy as that Delta faucet before & has never heard of anyone having to install a commercial grade one in a typical home. Would like to know for future reference. Thanks!

Thanks for all the great suggestions! We've had apartments with Delta single-handled faucets for years and have had very few problems. But, as I mentioned, this one is being used beyond normal pressure because she's hooking up a washing machine to it. I'm really powerless to do anything beyond either fix the Delta (again) or get something sturdier made for tough use. I'll definitely mention the brands/types you've suggested in a discussion that I'll have with a plumber acquaintance, and at the plumbing supply shop that is very helpful if I go in at the right time of day when the plumbers aren't all lined up waiting to buy supplies for their work.

Would it be possible for you to provide a proper washing machine hookup? It may cost more up front, but perhaps it will save you in the long run by not putting any undue stress on the faucet.

@fillmoe, our Delta was also a single-handle and wasn’t hooked up to anything putting extra use or pressure on it. Just regular household use washing hands & pots/pans & it still acted up every six months; so my non-plumbing pro advice would be to save your sanity and avoid Delta for the next one, even if you go commercial grade. My plumber was surprised when he heard it was giving us trouble & that I wanted to take a sledgehammer to it, but when researching faucets online I came across so many people complaining of the same thing & how it’s no longer a good brand (sigh, as with most things).

Someone suggested a pull-down...but your tenant probably wouldn't be able to hook a washer up to it....maybe that would be a good thing? 😉

However, I suspect you would get a lot of complaints from your tenant about it!

@Buehl, great minds think alike 😂. That occurred to me too.

The best resource for faucet reviews is the website set up by @StarCraft Custom Builders who contribute pro information on this forum as well (Click here). You’ll find what you need there. I live not far from North Olmsted, OH (their corporate headquarters) so I have to recommend Moen, another good choice, as their faucets are assembled in the US. Good luck!