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A technician testing water at a kitchen sink with a handheld meter

Well Water Filtration System Installation

We start with a certified lab test of your well. If it shows your water is fine, we'll tell you. If it doesn't, the lab result decides what we build.

The lab test is charged, and credited toward your install if you go ahead. We collect the samples at your house and send them to a certified lab.

Local to the Denver MetroDesigned From a Certified Lab TestRetested After Install

What Homeowners Say

Read our reviews on Google
Very exceptional work!! Had someone come out to do a water test and install a reverse osmosis system under my sink. Super easy process and I am very happy with how it turned it out. Haven't had any problems, highly recommend!
Heather L. · 5-star Google review
Excellent experience working with Nico at ClearGen Water. He was courteous, professional, and knowledgeable about our area's water, and our in-home tap water test was thorough and well-explained. This personalized review was great as Nico walked us through the results and how our family could best optimize our water quality in an honest, direct, and transparent way. I'd highly recommend him to others as knowing what is actually in our tap water is so important, and you don't feel pressured to buy anything throughout the whole process. In fact, Nico went out of his way to learn about our water usage, what's important to our household in a water filtration system, and answered all our questions along the way. We could not recommend him more highly to others!
David R. · 5-star Google review
Very professional and diligent! Would highly recommend
Steven A. · 5-star Google review

Do You Need a Well Water Filter?

You might, and you can't tell by looking. Some wells are fine as they are; others need iron, sulfur, hardness or bacteria treatment. Colorado doesn't regulate private wells, so nobody tests yours unless you do.

These signs say a test is worth it, and the lab result says what, if anything, to install.

  • A rotten-egg smell from the taps
  • Orange, brown or black stains in sinks and toilets
  • White scale on fixtures and in the water heater
  • Sand or grit in faucet screens

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Orange iron stains in a white sink, a common sign that well water needs a filter

Why Does a Well Water Treatment System Start With a Lab Test?

Because there is no default well, so there is no default well water treatment system. Iron, manganese, hydrogen sulfide, hardness, bacteria, nitrate, arsenic, uranium and radon all need different equipment, and several have to go in a specific order to work at all.

It matters here. Colorado State University researchers testing private wells in northern Colorado reported, in preliminary results, that about a quarter of the wells tested may contain contaminants a municipal provider would not be allowed to serve. In state data for Douglas County from 2023 to 2026, 33 of 95 private well samples had combined PFOA and PFOS of 4 parts per trillion or more.

We charge for the lab test and credit it toward the install, which keeps the incentive honest: the test decides the system, not the other way around. If a low-cost county or state test answers your question, we'll point you to it.

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Nico from ClearGen Water running a water test at a kitchen sink

What Goes Into a Whole House Water Filter for Well Water?

Whatever the lab finds, in this order: sediment first, then iron and sulfur, then a softener, then UV last. The order is what makes it work.

Put UV first and it fails quietly. That's the most common mistake we find on existing well systems. A licensed plumber does the install, the lab result sets the targets, and we retest after we install.

  • Sediment filter: protects everything downstream from sand and grit
  • Iron filtration system for well water: an air-injection filter that oxidizes iron, manganese and hydrogen sulfide, then backwashes to a drain
  • Water softener: only if the lab shows hardness worth removing
  • UV sterilizer: last, because ultraviolet needs clear water to work
A whole house well water filtration system in a basement: pressure tank, filter tanks and a UV sterilizer

Do You Need a Water Softener for Well Water?

Only if the lab shows hardness worth removing. When it does, the softener goes after the iron filter, because iron fouls softener resin, and it's sized from the lab's hardness and iron numbers, on a metered valve.

A hardness test sample held over a kitchen sink, turned blue at the end of the test

Why Homeowners Choose ClearGen Water

ClearGen is a local water company, and Nico, who runs it, does your well sampling himself. You see every reading, and you keep them in writing whether or not you buy anything.

  • We tell you when you don't need a well water system, and show you the number that says so
  • The target the system has to hit goes in writing before we install, and we retest to prove it
  • Equipment that takes standard parts, so any plumber can service it
  • A licensed plumber does the install, with the permit pulled where your city requires one
Nico from ClearGen Water beside a gas water heater in a basement

How it works

How Our Well Water Filtration Install Works

We collect the samples at your house and send them to a certified lab. Nothing to prepare except access to a tap before any treatment.

  1. 1

    Test

    A certified lab tests your well water, and we ask what you've noticed.

  2. 2

    Compare

    We go through the lab report with you, number by number, and what each one means for your house.

  3. 3

    Recommend and Install

    Only the equipment the lab result justifies, in the right order. Then we retest after the install.

Where it goes: after the pressure tank and before the water heater. Sediment first, UV last.

Questions

Well Water Filtration FAQ

Do you need a filtration system if you have well water?

Not always. Some wells are fine as they are; others need iron, sulfur, hardness or bacteria treatment, and you can't tell which by looking. Colorado doesn't regulate private wells, so a certified lab test is how you find out, and it is what we design from.

Why do you need a lab test for a well?

Wells vary too much to guess. Iron, sulfur, hardness, bacteria, nitrate, arsenic and uranium all need different equipment. A certified lab result tells us what to build and sets the targets we have to hit.

How much does a well water filtration system cost?

It depends entirely on what the lab finds: one stage for hardness, or sediment, iron and sulfur removal, a softener and UV in sequence. That is why we never quote a well system before the lab result.

How much does a well water test cost?

It depends on the panel. A basic bacteria and nitrate test costs far less than a full design panel with metals, uranium and PFAS, and some counties offer basic kits at no charge. Our in-home test of hardness, total chlorine and TDS is part of the visit; a certified lab panel is a separate cost, credited toward an install if you go ahead. It is worth paying for when the question cannot be answered at the tap: lead, PFAS, bacteria, nitrate, arsenic or uranium, and for every private well.

How long does a well water filtration system last?

The tanks and valves typically last many years, while the parts inside wear on their own schedules. UV lamps are usually replaced every year, sediment filters as they load up, and iron filter media after several years depending on how much iron your well carries.

How often should I change a whole house well water filter?

When it loads up, which depends on how much sediment your well produces. Many wells need a new sediment cartridge every few months, and a pressure drop across the filter tells you it is time. Check it more often after the well has been serviced.

What is the best water softener for well water?

One installed after iron removal and sized from the lab's hardness and iron numbers. Iron fouls softener resin, so on most wells the softener goes after the iron and sulfur filter, on a metered valve.

Is it okay to shower in water that smells like sulfur?

Lots of households do, but the smell is worth tracking down. It usually comes from hydrogen sulfide in the well, or from a reaction with the water heater's anode rod if it only shows up on the hot side. A lab test and a hot-versus-cold check tell you which, and an air-injection filter removes it at the source.

Will I be pressured to buy?

No. No color-changing drops, no demonstrations and no two-hour pitch at the kitchen table. You get your readings in writing, what they mean, and a straight answer, including that you don't need anything. You keep the scorecard either way.

More questions (4)
When and how often should you test your well water?

At least once a year for coliform bacteria, nitrate and nitrite, which is what Colorado's health department recommends after a first baseline test. Test again after any work on the well, a flood, or a change in taste, smell or color. Jefferson County Public Health offers bacteria and nitrate kits to county well owners at no charge while supplies last, and CDPHE runs a PFAS testing program for private wells. Use those first if they answer your question.

Are spin-down sediment filters worth it?

On water with sand or grit, yes: a spin-down screen catches the heavy particles and can be flushed instead of replaced. Treated city water usually carries little grit, so a standard sediment cartridge ahead of the carbon is enough.

What is the best sediment filter for well water?

One matched to your particle size: a spin-down screen for sand, then a finer cartridge for silt. Too fine a cartridge on a sandy well clogs in weeks. We size it from what your well actually produces.

Can I test my well water myself?

You can collect the sample yourself, and for a basic bacteria test that is how most kits work. The result depends on technique: sterile bottles, the right tap, and getting the sample to the lab within its holding time. Hardware-store strips are a rough screen, not a certified result.

Well Water Filtration Service Areas

ClearGen Water installs well water systems across the Denver metro and the surrounding communities. We're based in Parker, so we're never far away.

  • Well Water FiltrationParker, CO
  • Well Water FiltrationCastle Rock, CO
  • Well Water FiltrationHighlands Ranch, CO
  • Well Water FiltrationCentennial, CO
  • Well Water FiltrationAurora, CO
  • Well Water FiltrationDenver, CO
  • Well Water FiltrationLittleton, CO
  • Well Water FiltrationMonument, CO
  • Well Water FiltrationThornton, CO
  • Well Water FiltrationWestminster, CO
  • Well Water FiltrationBroomfield, CO
  • Well Water FiltrationArvada, CO
Neighborhoods we serve
Parker
The Pinery, Stonegate, Pradera, Idyllwilde, Canterberry Crossing, Stroh Ranch, Bradbury Ranch, Anthology
Castle Rock
The Meadows, Crystal Valley Ranch, Terrain, Founders Village, Plum Creek, Red Hawk
Highlands Ranch
BackCountry, Westridge, Northridge, Eastridge, Southridge
Centennial
Willow Creek, Piney Creek, Cherry Knolls, Southglenn
Aurora
Saddle Rock, Southshore, Tallyn's Reach, Murphy Creek, Blackstone, Heritage Eagle Bend
Denver
Central Park, Green Valley Ranch, Lowry, Washington Park, Cherry Creek, Hilltop
Littleton
Ken Caryl, Roxborough Park, Columbine
Monument
Jackson Creek, Promontory Pointe, Sanctuary Pointe
Broomfield
Anthem, Interlocken

View all service areas

Book Your Water Test

If you don't need a well water system, we'll tell you.

We measure at your tap before we quote anything. You keep the readings either way.

The lab test is charged, and credited toward your install if you go ahead.

Step 1 of 4

Book Your In-Home Water Test

We test your water at the kitchen sink first, then recommend.

CallBook a Test