Capital Well is proud to announce it is now offering full service irrigation services across all of New Hampshire.
Click here to book your winterization appointment or to learn more about our full suite of irrigation services!

Stop drinking
dangerous water.

The ONE Cartridge Tank Filter works hard to remove lead, chlorine and other harmful chemicals such as PFOA/PFOS from your drinking water. Getting set up is easy and inexpensive.

Call (800) 924-1192 or fill out the form to
$300 off your installation.
Offer expires May 31st.

Capital Well can help you choose and install the correct water filtration system for you!

Fill out the form below or call (800) 924-1192 today. Don’t forget to ask us about the current State of New Hampshire rebate program! 


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We have the solution for you!

The unique ONETM Cartridge Tank filter system — designed to replace smaller, commonly used cartridge filters — is the ideal solution for the removal of a multitude of particulates. Offered in two different configurations to cover anything from residential to larger commercial applications, these systems can utilize a variety of large capacity cartridges which greatly extend replacement cycle times. Ideal for most water conditions where pre- or post-filtration for particulates is needed.

Benefits of The ONE Cartridge Tank Filter

Cartridges specially designed for higher flow rates and higher contaminant retention capacities

Wide variety of application-specific cartridges available

Easy access to cartridge for service and replacement purposes — no special tools required

Optional bottom drain — allows particles to flush from the system and extends cartridge life

Let us help you to get the best quality water in your home while making sure NH kids have food security when returning to school this year. To support Drinking Water Awareness Month, Capital Well will donate 10% off all water treatment to the Backpack Program through September!

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Request A Quote