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Providing Home Air & Water Filtration Systems
to the health conscious consumer

Ecologist, James P. McMahon

water purification, home water purification systems, water filter, water purifier, well water treatment, healthy water by James P McMahon

Purchase the most effective home water filtration system by first learning which contaminants are in your water

If you're serious about having healthy water in your home...

You need help determining which Home Water Filtration System removes the contaminants in YOUR water

Water - you drink and bathe in it every day. Your health depends on it. And yet, until now, you've taken it for granted, assumed it was good, or relied on those who told you it was safe. Unfortunately, it's not... this website describes the variety of home water filtration systems that I sell. Public water systems have different water sources. Each source is different depending on many factors. It is these factors that will determine which contaminants are unique to your water.

My FREE Offer:

Call and we’ll review your water report together  

The mistake most people make is to buy a water filter without first learning what's in their water 

When you call you'll reach me directly

Are you trying to find the best water filtration system for your family and ending up confused by all the hype? Every site claims to have the best home water purification system or kitchen water filter and you don't know how to tell fact from fiction. There's this technology and that technology and high prices and low prices and you can't tell one from the other. You have no way of knowing which home water filtration system you need. Perhaps you've called a local company and don't know what to make of that experience.

 Call Now: 866-691-4214

Mon - FRi, 9 - 5, Moutnain Time

Home Water Filtration Systems for Health Conscious Consumers

An ecologist with more than 30 years experience working in environmental science, Sweetwater founder James P. McMahon specializes in water quality and designing home water filtration systems for the discerning health conscious consumer. Based on the premise that home water filtration systems must vary according to where a person lives as well as the contaminants present in the water, Sweetwater is committed to creating solutions tailored to YOUR water. We start by identifying the contaminants in your water specifically (not all water sources are the same) and then advise you which of my systems will remove that group of contaminants. We can help you with either city water or well water systems.

Making the right choice in selecting a home water filtration system for your home from a science-based skill set is the Sweetwater advantage.


"I decided to purchase the Urban Defender for whole-house filtering and a reverse osmosis unit for drinking water (I live in Los Angeles).

It is hard to explain the sense of satisfaction and safety I feel knowing that the water I bathe in and drink is healthy."

Senta Edesa, Los Angeles

“Dear Jim, you make me realize in a special way how our happiness depends on direct human relationships,

with nothing standing in the way between full and honest communication of what knowledge each of us has.  Bless your enterprise.”

Russell DuPree, Freeport, Maine


You Need Someone You Can Trust

I am James P McMahon, an ecologist with over 30 years experience dealing with environmental issues, including a decades of work on water quality, river restoration, and home water purification systems. It is my work with rivers that led me to understand the extent to which we've polluted our drinking water and to help people like you achieve healthy water. Even if you studied your water issues extensively, you are still likely to buy the wrong water filtration system for your home. To make the right choice you have to choose the person or company you trust. I help you make the best choice for your family.



I separate fact from fiction and my work is rooted in science.

Whether you’re looking for a whole house water filter, a water purifier, a filter for city water or well water, or you’re just trying to figure out what’s wrong with your water, I can help...

I work with customers throughout the United States. My approach is to identify the contaminants in your water and then prescribe the proper water filtration system. Sometimes a whole house water filter is needed and other times a simple kitchen water filter will suffice. Often you need both because each may remove a different set of contaminants. Either way, I will work to make sure we meet your needs within your budget. My focus is on providing healthy water for your family. Learn more about my services below. If you are outside of the United States I cannot help you due to the high cost of shipping.


Here are 3 ways I can help you...

If you are on public water: first find and email me your local water report and then call me and we’ll review your water report and determine which of the systems I sell will best meet your Kitchen Defender™ water filter is the best kitchen water filter you can buy or perhaps you need Sweetwater's custom reverse osmmosis system. My Urban Defender™ whole house water filter is more effective than popular systems that cost four times as much. I have developed these using the most current and effective technologies. They are both custom built to my specification - based on YOUR water! My Urban Defender is far superior to the cheap upflow systems offered at lowered prices. Don't be fooled! Request my specifications and study the differences.

If you have a private well: our process starts when you call me to purchase a well water test. Once we determine what's in your water we can discuss which well water filtration system or well water filter will resolve those issues. If you've already had your well water tested, call me with that test in hand to learn what well water purification system or well water filter you need.

You can purchase my Ultimate Guide and determine what type of filtration you need all on your own...


Update: Now with streamlined recommendations for city water in select locations: 

Learn exactly what to order:

San Francisco                   Los Angeles and Southern California

Salt Lake City                   Seattle and Bellevue

Chicago and suburbs        Denver and Durango

Dallas and Houston          Birmingham and Tuscaloosa

St. George, UT                Las Vegas, NV

New York City


Home Water Filtration Systems

I work with several manufacturers and carry a number of high quality products that address most water quality issues for city or well water. I have whole house systems, drinking water filters and reverse osmosis purifiers. My Urban Defender™ whole house water filtration system and Kitchen Defender™ water filter are incredible products at a great price and they are tailored to your water source. I provide the highest quality reverse osmosis system. This ability to modify components enables me to provide you with the best water purification system for your water while meeting your personal goals.


You won't find a shopping cart for equipment on this site. I deal with every customer individually ... by phone. That way I make certain that you buy exactly what you need. You can either call me, or request specifications and pricing by email from the links on the water and air purification pages. I'll gladly email you greater detail on the products that interest you. I will only make a recommendation when we are speaking on the phone while reviewing your local water report together.


The Ultimate Guide

The Ultimate Guide to Selecting the Perfect Water Treatment System helps you make the right decision. You may purchase my Ultimate Guide for just $14.95. If you follow my Five Steps to Pure Water as outlined in the Ultimate Guide, you'll know that you're buying the home water purification system that solves your problems and achieves your goals - resulting in the perfect system for you! Even people overseas are welcome to purchase my guide.

I Guarantee It!

At $14.95 my Ultimate Guide is a bargain and the best place to start.

Purchase The Ultimate Guide to Selecting the Perfect Water Treatment System

It's no longer reasonable to assume that you can rely on government agencies to provide you with healthy water at the tap. The federal government has failed to act on numerous contaminants of concern including pharmaceuticals in your water and most recently the group of PFAs known as forever chemicals. If you want healthy water for your family, you must take responsibility for treating it yourself. The mistake most people make is to buy a water filter without first learning what's in their water. Before you go out and buy anything you need to know what you're trying to achieve. I have seen local equipment sales people confuse consumers with water tests that confound even me. By knowing what's in your water and setting your goals you can avoid the confusion.

Read the Ultimate Guide. My Ultimate Guide to Selecting the Perfect Water Treatment System walks you through an easy, five step process, Five Steps to Healthy Water, during which you learn the candid truth about your water and what you can do to make the best decisions to protect your family. You may also wish to join my Water for Life email list. I send occassional emails about important issues related to water or air purification.





Before you purchase owe it to yourself to make sure you're making the right decision.

“Learn before you act and then you can act effectively to protect your health.”


My Commitment to You

  - I will always come from a place of integrity

  - I will never sell you anything you don't need     

  - I'll always suggest a lower priced option if it will accomplish your goals

I am committed to a life of principle in which my role is to make the world a better, healthier place to live one person and one family at a time...




 Customer Service, Return Policy, Privacy Policy, Filter Orders, Help

What's in YOUR Water?

ecologist James P McMahon

James P. McMahon, ecologist

My name is Jim McMahon and I help people achieve healthy water in their homes.

When you call, you'll reach me directly.


Together, we will solve the water issues in your home.


I look forward to hearing from you!

Call Now: 866-691-4214 (toll-free)



9AM - 5PM Mountain time

970-259-2171 (direct)


"Do what you do so well - and so uniquely - that people can't resist telling others about you."     - Walt Disney



I don't take American Express

Notice: The State of California prohibits the mention of studies that document the dangers of chlorine to its residents.  California prohibits the use of the term 'pure' or 'purify' and also prohibits any claims of the reduction of contaminants by non-certified water treatment devices.

I sell both certified and non-certified water treatment systems.  Even my non-certified systems use certified technologies in the filters.  Water purification is the process of removing unwanted contaminants from water.  The end result of that process is not likely to be pure water, nor is that necessarily desirable.  What is important about water purification systems is not whether or not they are certified but what claims are made about them and whether or not those are accurate.