The science behind your Nestwell Score
Home health comes down to exposure — the air you breathe, the water you drink, and everything your skin touches, thousands of times a day, in the place you spend most of your life. Nestwell connects your home's environmental health to clear, personalized next steps — from air & water quality to mold, moisture, soil, and property risk.
2–5x
more pollutants in indoor air than outdoor air
45%
of US tap water contains PFAs
1 in 4
chronic conditions linked to environment
How it works
Enter your address, and we'll generate a data-backed home health report with areas of concern and a personalized action plan.
We send lab-grade kits. You collect a sample, we handle the rest.
Personalized fixes, prioritized so you know what to do first. Plus up to 20% off the products you need.
Under-sink filter — cuts PFAS & lead
HVAC filter swap + bedroom purifier
Ventilate 10 min, track over time
Marketplace
Lab-grade kits that turn "homes like yours" into your home — collect a sample, mail it back, get clear results.
Medical advisors
Clinical Professor of Medicine — Primary Care and Population Health
Stanford University
“Our physical & home environment is a direct determinant of our health, and is immunoregulatory. In a year, we breathe about 6 million times, drink 250 gallons of liquid, eat almost 2 tons of food, with hundreds of compounds interacting on our skin and immune systems. Small environmental changes will make a big difference — especially in early childhood development and for vulnerable adults.”
Former Senior Associate Dean for Research & Founding Director, Stanford Center for Population Sciences
Stanford University School of Medicine
“Having spent 4 decades studying the health effects of occupational and environmental exposures, as well as treating thousands of men women and children with varying impacts of such hazards, I consider a safe living and working environment paramount to long term health and well being.”
Associate Professor of Medicine, Division of Pulmonary, Critical Care, Allergy, and Sleep Medicine
UCSF
“As a lung doctor, I see air pollution as one of the greatest threats to respiratory health. Already air pollution (both indoor and outdoor) is the fastest growing cause of Chronic Obstructive Pulmonary DIsease (COPD) worldwide.”
Enter your address and you'll get your Nestwell Score: a 0–100 read on your home's environmental health, scored across water, air, radon and radiation, and nearby hazards. It's an estimate built from public data for your exact address, not a zip-code average. It's free, and there's no signup.
Public datasets that cover your address: EPA, USGS, EWG, NIFC wildfire perimeters, NWS alerts, and the US Drought Monitor, among others. We score your specific address against those sources rather than averaging a region.
Your Home Vitals: every reading behind your score, the full hazard map for your area, every flagged finding, and a personalized action plan. One payment. Nothing renews.
Because you're the customer, not the advertiser. We never sell your address or your results, and the $49 is what keeps it that way.
Your score moves when you add real measurements from your home. The $49 opens what's already behind the number, it doesn't change it. A test kit does, because it replaces an estimate for your area with a lab result from your house.
No. Your score and your action plan stand on their own. If you do test, your $49 applies in full toward any kit for 30 days, so the unlock costs you nothing on top.
Certified lab results come back in about 7 days from the day your sample reaches the lab.
