LiverHow the body breaks down and clears chemicals.
1.6x the safe level
What’s driving this?Share of this score
- PFOS · PFAS48%
- PFOA · PFAS31%
- Chloroform · Disinfection Byproducts21%
Your biggest health decision is your home
Learn how healthy your home really is. Enter your address and we generate a data-backed Nestwell Score in seconds, then test what matters and fix it, all from one place.
Shop by concern
9 kits
Bundled for where you are in your home health journey.
Curated kit sets built by the Nestwell Team for a life stage or concern
Shop all bundles
Starter Kit
Test your water and household surfaces for 100+ lead, mold, fungus and water-quality markers
From $251.74
New & Growing Family
For a new or growing family: your drinking water, indoor air, lead in household dust, and hidden mold.
From $503.16
Allergy & Asthma
Track indoor triggers across three sources: mold, common indoor allergens, and VOCs in the air.
From $604.58
Chronic Illness
A deeper environmental sweep for hard-to-explain symptoms: mold, VOC air, and our Level 2 water panel.
From $547.82
Just Moved In
A baseline for a new place: drinking water, indoor air, mold, and lead in dust.
From $503.16
Your home’s health is your health
You spend 90% of your life indoors. Nestwell makes it easy to learn how healthy your home really is.
Your Health
Your results, mapped to your body
Most home tests stop at a list of numbers. Nestwell adds up what every kit finds and shows which organs those contaminants are linked to, from your liver and kidneys to your hormones, how close each is to its safe level, and an estimate of your added lifetime cancer risk.
Every kit, one picture
Water, soil and dust results add together, the way the exposure reaches you. Each kit you test fills in more of it.
By body system, against its safe level
Each contaminant is filed under the body systems it is linked to (liver, kidney, endocrine and more), and each one shows how close the total is to its safe level and what is driving it.
Cancer risk in plain numbers
Contaminants with an EPA cancer estimate are added into one figure, shown as 1 in N, with every contributor listed.
Built on the EPA’s risk assessment method. It describes exposure in your home, not your health, and is not a diagnosis.
How the scores are builtResults by body system
Example water testFlagged · 1 body system
Under the safe level · 2 body systems
EndocrineHormones and blood sugar regulation.
70% of the safe level
KidneyFiltering the blood and balancing fluids.
30% of the safe level
Lifetime cancer risk
1 in 42,000
Extra cancer cases among people drinking water at these levels for a lifetime, at most.
1 in 1,000,0001 in 10,0001 in 100
Protecting your family from the unseen
Mold and lead can be found all around your house, and a single swab answers for a single square foot. Sampling separate places is what turns a handful of readings into a picture of the house you actually live in.
Dust & Surfaces test kits12
Why use this kit?
Lead and metals settle on the surfaces a household touches daily.
Explore all kits and bundles →How collection works
Your home’s journey tobetter health
Collect
Take a quick sample from your kitchen tap, swab damp spots that look like they may have mold and wipe the dusty areas around your home. No tools, and no unstable samples that must be sent back the same day.
Mail
Everything goes back in the same box with the prepaid return label. No appointment, nobody in your house, and easy to send back when convenient for you.
Read
Results land in your Nestwell dashboard as they clear the lab, each scored against the standard that applies to it.
On the right side of science, backed by research
The easiest path to better health is raising your awareness, the Nestwell blog is authored by scientists and experts in their field.
Read the blogIn partnership withexperts who study this for a living
“Our physical and home environment is a direct determinant of our health. Small environmental changes make a big difference, especially in early childhood development and for vulnerable adults.”
Dr. Malathi Srinivasan
Clinical Professor of Medicine, Primary Care and Population Health
Stanford University
“After four decades studying the health effects of environmental exposures, I consider a safe living environment paramount to long-term health and well-being.”
Dr. Mark Cullen
Former Senior Associate Dean for Research; Founding Director, Stanford Center for Population Sciences
Stanford University of Medicine
“As a lung doctor, I see air pollution, both indoor and outdoor, as one of the greatest threats to respiratory health.”
Dr. Lauren Eggert
Associate Professor of Medicine, Pulmonary, Critical Care, Allergy, and Sleep Medicine
University of California, San Francisco
“Most of my career has been spent defining what makes a building healthy. A home is a system, and how it is designed and built shapes your health as much as anything you bring into it.”
Dr. Matthew Trowbridge
Physician and Built-Environment Health Expert; Former Chief Medical Officer, International WELL Building Institute
Founder, Health Intent Partners
