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Whole-House Water Filtration Systems in Londonderry, NH
Table of Contents
Water in Southern New Hampshire can carry more than most homeowners expect, whether it comes from a private well or the town supply. A sulfur smell, orange stains in the tub, and a flat metallic taste are the signs people notice, but contaminants like PFAS, arsenic, and radon don’t change how your water looks or smells at all.
At Mainline Plumbing, we install a whole-house water filtration system at the point where water enters your home, so every faucet, shower, and appliance gets treated water. We base our equipment recommendations on your water test results, which means you get the treatment your water needs.
Our Water Filtration System Services in Londonderry and Throughout Southern New Hampshire
No two wells produce the same water, so we choose equipment based on what your results show.
Whole-House Water Filtration for Wells and Town Water
A well water filtration system connects where the main line enters your home, usually near the pressure tank, while town water setups tie in near the main shutoff. Sediment, iron, sulfur, and the chlorine taste common in town water get filtered out before they reach your pipes.
PFAS, Arsenic, and Radon Treatment
When a lab result flags a specific contaminant, we install equipment built to remove it. That includes PFAS water filter systems, along with treatment for arsenic, radon, and bacteria.
Water Softeners and Hard Water Treatment
Hard water leaves white scale on faucets and a film on dishes, skin, and hair. We pair water softener services with filtration when a home needs both, so one visit takes care of the whole problem.
What to Expect When We Install Your Water Filter
We base our recommendations on real data and keep you informed at each stage of the process.
- Water testing: We collect a sample or review recent lab results, beginning with water quality testing if you haven’t had your water checked.
- Recommendations: We go over what the results mean and give you more than one option.
- Installation: We install the equipment and connect it to your plumbing.
- Walkthrough: We show you how everything works and when filters or media need attention.
If you’re applying for a state PFAS rebate, we’ll supply the installation documents you’ll need for your application.
Signs You Need a Whole-House Water Filter
These are the problems we hear about most from homeowners.
- Sulfur smell: Water smells like rotten eggs, especially from the hot tap.
- Orange or brown stains: Iron leaves rust-colored marks on tubs, sinks, and laundry.
- White buildup: Hard water scale collects on faucets and showerheads and spots your glassware.
- Off tastes and odors: Drinking water and coffee taste metallic, bitter, or like chlorine.
- An untested supply: You won’t know about PFAS, arsenic, or radon in a private well without a lab result.
PFAS is worth testing for in this part of the state, since NHDES notes it turns up more often at elevated levels in southern New Hampshire wells. The state’s PFAS Removal Rebate Program for Private Wells has offered eligible homeowners a one-time rebate of up to $5,000 toward treatment, and you apply directly through NHDES. Check the program page for current eligibility and funding.
Why Choose Mainline for Water Filtration in Southern NH?
Water quality is one of our biggest focuses at Mainline Plumbing, a family-owned company based in Londonderry, NH. Our team includes licensed NH Master Plumbers and state-approved apprentices, so the same crew that sizes your filter can handle the plumbing connections.
We install whole-house PFAS treatment that can qualify for the state’s private well rebate when your test results come back above state or federal limits, and we’re glad to answer questions about the program. Specials and financing are available for larger installations.
Proudly Serving Londonderry and the Surrounding Area
Our water treatment installs reach homeowners in Bedford, Windham, Pelham, Derry, and the surrounding communities. Along with water filtration, we help local homeowners with:
- Well pump services
- Well pump replacement
- Well pump maintenance and annual tune-ups
- Water heater repair
- Water heater replacement
- Tankless water heater services
- Arsenic, bacteria, and radon removal services
- PFAS water testing
- Bottleless water coolers
- Emergency plumbing services
A yearly check on your well pump and filter media keeps treated water flowing reliably.
Schedule Whole-House Water Filter Installation in Southern NH
Ready to find out what’s in your water? Book a water testing and filtration appointment online, and we’ll set up testing and talk through your equipment options.
Frequently Asked Questions
The cost depends on what’s in your water, how much your household uses, and how the equipment connects to your plumbing. A setup for sediment and iron costs less than a unit that targets PFAS or arsenic. We test first and price the equipment around your results, and financing is available for larger installs.
For many homes, yes, because one unit treats every tap and protects fixtures and appliances from buildup, and it works on both well and town water. It’s worth it when testing shows something that needs treatment. If your results come back clean, we’ll tell you.
Possibly. NHDES has offered private well owners a one-time rebate of up to $5,000 per residential address for PFAS treatment when testing shows PFAS above state limits. Owners apply directly through NHDES, and eligibility and funding can change, so check the program page before you apply.
Written By Mainline Plumbing
When something goes wrong with your water, the cause isn’t always obvious. It could be your plumbing, well system or the water itself. Mainline has the experience to look at the whole picture, identify the problem and recommend the right solution.
Concerned About PFAS?
