Water Treatment & Filtration in Southern NH
Softer, cleaner water for your whole home. Water softeners, whole-house filtration, and well water treatment for arsenic, iron, and sulfur, installed by licensed NH plumbers with a free written estimate.
Clean, Soft Water for Your Whole Home
Hard water scale, rust-colored staining, a rotten-egg smell, or arsenic you cannot see or taste: every home's water is different. We start with a water test, explain what it shows, and recommend the right system for your water, whether you are on a private well or city water.
A Trusted Choice in Southern NH, Family-Owned Since 1928
Licensed NH Plumbers
Every water treatment installation is done by our licensed NH plumbers, with permits and inspections handled for you.
Water Test First
We test your water before recommending a system. For private wells, we can arrange independent laboratory testing.
Readers' Choice Winner
Voted a Readers' Choice plumbing contractor by Southern NH homeowners every year since 2013.
Family-Owned Since 1928
Four generations serving Southern NH. We stand behind every installation.
What's Going On With Your Water?
Match what you are seeing to the likely cause. We confirm it with a water test before recommending anything.
White Scale and Spots
Usually hard water. A water softener stops scale buildup on fixtures and appliances.
Orange or Brown Stains
Often iron, and dark stains can point to manganese. An iron and manganese filter removes both.
Rotten-Egg Smell
Can come from hydrogen sulfide in well water or from your water heater. We test to find the source.
Chlorine Taste or Odor
Common with city water. Carbon filtration reduces chlorine taste and odor.
Worried About Arsenic
Arsenic has no taste, smell, or color, so only a test finds it. Multi-stage treatment removes it.
Bacteria in Well Water
UV purification helps protect well water from bacteria without chemicals.
Water Softeners and Whole-House Filtration
Hard water leaves scale on fixtures and appliances, and city water can carry a chlorine taste and odor. We size softeners to your water hardness and household use, and install filtration that treats every drop of water entering your home.
- Salt-based ion exchange water softeners
- Sized to your water hardness and household use
- Whole-house sediment and carbon filtration
- Multi-stage systems for complex water issues
- Under-sink and whole-home reverse osmosis
Well Water Treatment for Arsenic, Iron, and Sulfur
New Hampshire's granite bedrock leaves the state with some of the highest naturally occurring arsenic levels in the country. Arsenic cannot be seen, smelled, or tasted, so a water test is the only way to know. We design complete systems around your well's test results.
- Multi-stage arsenic removal
- Iron and manganese filtration
- Sulfur (rotten-egg) odor treatment
- Chemical-free UV purification for bacteria
- Independent lab testing arranged for your well
How We Price Water Treatment
Free, No-Pressure Estimates
We review your water concerns and any recent test results, recommend only what your water needs, and give you a written quote. No charge, no obligation, no upsell.
All-In Project Pricing
One number covers the equipment and installation by licensed NH plumbers, including the bypass valve, drain connection, permits, and inspection.
Maintenance and Service
Filters, salt, membranes, treatment media, and UV lamps all need periodic attention. We explain the upkeep before you choose, and offer filter-change reminders and annual service.
0% Financing Available
Spread the cost with 0% promotional financing on qualifying installations. Ask your water treatment team about current offers, eligibility, and available terms.
Reviews From Southern NH Homeowners
They are knowledgeable and courteous. They installed a ductless system so I continue to use their service for yearly maintenance of my furnace and ductless units.
Claudia MichaelDuctless Mini Split customerA.J. LeBlanc Heating responded very quickly to our plumbing leak. First time I have called LeBlanc Heating for plumbing, and the plumber they sent was very pleasant, clean, and quick. He made sure we had no other problems while he was here. Very professional and very reasonable! I will definitely use them again.
John WalkerPlumbing customerI found LeBlanc to be a friendly company. When I called, I was greeted by the office staff who scheduled my appointment for a yearly cleaning. Three days later the technician came over and cleaned the system. He did a great job like no one else has ever done before. He also checked the system for proper performance. I was very happy with his work and would recommend A.J. LeBlanc HVAC to anyone who is looking for a GOOD firm to service their systems. I would also recommend them for any new installation I guarantee that they will get reliable service.
Edward LeducSatisfied CustomerRead more reviews on our testimonials page.
Free Water Treatment Estimate
Call or fill out the form. We will review your water concerns, recommend the right system, and provide a written estimate.
Serving Bedford, Manchester, Nashua, Concord, Merrimack, Hooksett, Londonderry, Derry, Bow, Goffstown, Amherst, Auburn, and surrounding towns.
Frequently Asked Questions
How do I know what water treatment system I need?
It depends on your water source and what you are dealing with. City water typically needs carbon filtration for taste and odor. Well water may need sediment, iron, sulfur, or arsenic treatment. We start with a water test and recommend the right system based on your results.
Do I need a water test first?
Yes. A current water test lets us match the system to what is actually in your water. For private wells, we can arrange independent laboratory testing and use the results to guide our recommendation.
How long does installation take?
Most whole-house filtration installations are completed in two to four hours, and under-sink systems typically take one to two hours. Multi-stage well water systems can take longer, and we will give you a timeline with your estimate.
What maintenance does a water treatment system need?
It depends on the equipment. Upkeep may include replacement filters, salt, membranes, treatment media, or UV lamps. We explain the maintenance before you choose a system and can set you up with filter-change reminders and annual service.
Get in Touch
Fill out the form and we'll get back to you. Usually the same business day. For emergencies, call us directly.
Contact Information
Mon-Fri: 8am-4:30pm
Evenings & Weekends: Emergency Service
24/7 Emergency Service
No heat? No hot water? Call 603-623-0412 any time.