Mainline Plumbing Londonderry NH

Business Overview

Mainline Plumbing is a family-operated plumbing company serving the Londonderry area since 1987. The team provides both scheduled work and emergency plumbing repairs. Staff includes licensed plumbers and state-approved apprentices who handle residential and light commercial jobs. As a vendor for New Hampshire’s rebate program, the company installs whole-house drinking systems for qualified homeowners.

Key Services

Mainline Plumbing focuses on water systems, general plumbing repairs, and sewer work. Services include:

• Water treatment: water filtration, softening, well pump repair, and whole-house systems for PFAS, arsenic, and radon
• Water heaters: installation and repair of tank and tankless units
• Gas lines: installation and repair for home and small business gas systems
• Drain, sewer, and pipe work: drain repair, sewer installation and repair, and water pipe repair
• Fixtures and showers: bathtub repair, shower repair, plumbing installation or replacement, and plumbing inspection

Areas Served

Mainline Plumbing works across southern New Hampshire and nearby Massachusetts towns. Regular service areas include Nashua, Derry, Merrimack, Londonderry, Hudson, Windham, Litchfield, and Chester in NH, and Methuen, Dracut, and Dunstable in MA.

Company History

Founded in 1987, the business began as a small, local shop focused on well pumps and household plumbing. Over the years it added water treatment and commercial services. Growth was steady and practical: more licensed staff, state-approved apprentices, and new equipment to handle modern contaminants and colder New England winters.

The company also joined New Hampshire’s rebate program as a vendor so qualified homeowners can receive free whole-house drinking systems. That work responds to local concerns about PFAS, arsenic, and radon in private wells and town water sources.

Leadership

Leadership remains hands-on and local. The owners kept the business family-run and involved in town programs. Management focuses on workforce training, licensing, and safe work around gas lines and water systems. Staff regularly participate in industry training and local trade groups to stay up to date with codes and best practices.

Specialties & Highlights

• Well pump repair and water treatment expertise, including PFAS and radon solutions
• Vendor for NH rebate program offering eligible whole-house drinking systems
• Licensed plumbers plus state-approved apprentices for reliable staffing
• Emergency plumbing repairs with response for frozen pipes and winter damage
• Service for both homes and small businesses near Londonderry and greater Nashua area

Why Locals Choose Mainline Plumbing

Mainline Plumbing Londonderry NH is chosen for steady service, practical experience, and local knowledge. The team understands New Hampshire weather, older homes with clapboard and stone foundations, and the needs of private well owners. They focus on clear estimates, licensed work, and addressing water contaminants that matter to families.

Hours

Mon–Fri: 6:00 AM – 6:30 PM
Sat: 6:00 AM – 2:00 PM
Sun: Closed

For repairs, inspections, or questions about water treatment and rebates, Mainline Plumbing responds to inquiries across Londonderry and neighboring towns.