There is a dining hall on each campus. The food services are provided by ARAMARK. The food is decent. But from what I can tell it's the same thing always, not a lot of variety. There are some other options. Starbucks on South Campus, Sal's Pizza and Taco Bell on East. Plenty of restaurants near campus. Indian, Thai, Laotian, Cambodian, Middle Eastern, Pub Food, Wings, Pizza, Italian, Greek, Spanish, Mexican, etc. A great deal of diversity in Lowell, pretty much anything you want to eat you can find. Suppa's on North Campus tends to be a huge late night hang out (Pizza, Subs, etc.) -- they are open until 3am thur-sat, or something close to that.
The food on campus is great. Theres multiple dining halls on each campus. There's also ones open late-night so when you're out with your friends and come in late on the weekends, you can still get a bite to eat. We have a Subway and Starbucks on South Campus, among many other food options. Additionally, the good thing about UMASS Lowell is that there are so many things around it. There's an abundance of restaurants and other dining options around the campus. For examples, Suppas on North Campus is where everyone goes on the weekends because they have great pizza! Theres also a Dunks across the street from North Campus. The options are endless!!
I don't normally eat too much on campus, but the Dining Hall on South is pretty awesome since it's all you can eat and offers a variety of options for you're taste buds. There's also Subway and a new Starbucks on this side of the river too. North is a bit more tricky. There's a Dunkin Donuts across the street and at least two small pick up places where you can have ready-to-heat meals and coffee but, no real place where you can eat and enjoy yourself.