Mainline Plumbing 71 Mammoth Road, Londonderry, NH 03053

"What an amazing experience with John at Mainline Plumbing. We qualified for the PFAS filtration system to be installed. Mainline Plumbing took care of all the paperwork and came out the next day to install! Very professional and great to work with from start to finish. If you haven’t checked with them on this yet, give them a call. Thank you John!"

"Mainline plumbing was Great !! They . Gave us all the information we needed to help us get the right PFOAS WATER TREATMENT PLAN. We didn’t have to do any paper work they did it all to get refunded from the State for the PFOAS Program. Very friendly and immediate installation in one day. They took water sample when done and explained everything as they went along. I would highly recommend MAINLINE for any plumbing needs they got it all. Suzanne. Londonderry"

"This company is one of the BEST I have ever dealt with regarding home repair. Working with an unfamiliar company, regardless of their reviews, always brings a level of apprehension and nervousness on the part of the consumer....BUT, boy did our family hit the jackpot with Mainline Plumbing! From the initial meeting until they walked out, our experience was extremely pleasant and free of worry - knowing we were in the best hands. We first worked with John, the Owner, a few weeks back when our kitchen faucet and tub would not stop dripping. In a panic, we called a number we had seen while on our way home. We are so very thankful that number belonged to "Mainline Plumbing!" They came the SAME day and fixed the problem. Fast forward to this past Friday and we woke to an even bigger issue, our Well Pump failed! We were convinced we would be without a Well through the Holiday weekend. We called Mainline Plumbing and John said he would never let us be without water. Even though we contacted him on Friday afternoon, not only did he fit us in, but did not leave until we had a new Well Wire and Well Pump, even staying after it got dark and the job was done! John runs his business like no other and deeply cares about his customers. It is evident in his quality of work, his attentiveness to customer needs (especially emergencies!), and his care, kindness, and respect of us and our home. We simply cannot say enough good things! We HIGHLY recommend Mainline Plumbing be the first call you make for any and all of your plumbing needs."

"We have used John and Mainline Plumbing twice in the past 6 months. John and his team replaced our Well Pump in early Spring. We were stressed about the process, but John and the team had the Pump installed and up and running in short order/same day as the call, awesome guys, very nice and professional. John and the team then installed a PFAS whole-home filtration system that we qualified for at no cost. The work was done professionally and looks amazing/clean! John and the team covered the entire rebate process. Great guys and I would highly recommend any services that you need!"

"We had to have a well pump replaced and was referred by a friend to contact Mainline plumbing to have them come and get us up and running again. I would highly recommend using them for future services. They are an awesome team and upfront about what needs to be done for repairs."