How we find what is wrong in your home, and grade it against the science.*

You track your sleep, your food, your training. The home you spend half your life in, the one your family breathes all night, you have never measured once. We do, then we tell you what it means and exactly what to do about it.

* Almost none of it is your fault. It came with the house: the pipes, the gas range, the lighting nobody designed around your sleep. You could not see it, so you could not fix it.

The path

Estimate from your address
Measure the home itself
Interpret against your health
Plan, in order

Then the app keeps watch

Safe for a city is not safe for you.

Every limit on your water is a citywide compromise. Your utility adds chlorine to kill what would make you sick this week, and lives with the byproducts, which carry a slower risk of their own. It holds lead down at the plant, then hands the water to pipes inside your walls it will never see. These are reasonable calls when you answer to a whole city at once.

You never agreed to those tradeoffs, and no one is coming to your door to redo them. That is not anyone’s failure. It was simply never anyone’s job. It can be yours now. See your own readings. Hold your one home to the line the health research draws.

The tradeoff you never signed

Disinfect water for a whole cityByproducts you drink and breathe for years THMs: CA OEHHA
Hold lead down at the treatment plantThe pipes inside your walls, never inspected Lead: EPA
Set one limit for millions of homesA line drawn for the average, not for your child

How it works, and why it doesn’t stop.

You do not test your home once, get a number, and live with it. You get a path, and someone walking it with you. Here is the whole thing, from the first free score to the part that never ends.

Free, in seconds

Estimate from your address.

Type your address and the app reads what is already public: your water district's filings, the nearest air monitors, the likely age of your pipes. You get a first Stasis Score before you open a box or spend a dollar, and it lives in the app from that moment on.

The kit, and the app

Measure the home itself.

The mail-in kit lets you sample your own tap water and ship it to a certified lab, screened for more than a hundred contaminants. The app records your rooms for a full week of air and light, because what hurts you spikes and fades. Later, in Orange County, a concierge visit can collect it all in person. Either way we measure your home, not a citywide average.

The part nobody else does

Interpret against your health, not the law.

We hold each number to the level the published health research calls safe. The legal limit only tells you what a city can enforce. This is the step that turns a reading into an answer: what it means for your body, and whether it needs fixing at all.

Behavioral and physical

Plan, in order.

Not a pile of options. One plan, ranked by what helps your health most, splitting what costs nothing and you can do tonight from what is worth installing.

Tonight, freeMove the bed off the streetlight wall. Run the range hood when you cook. Black out the worst bedroom.

Worth installingOne under-sink filter covers most of what is in your water. A HEPA for the one room that needs it.

Then the app keeps watch, for good. It holds your plan, tells you when something drifts, and prompts a retest on a schedule so a problem you fixed stays fixed. You already live this way with your body: test, adjust, retest, keep watch. Stasis is the first time your home gets the same loop.

What we measure, and why.

Each of the Three Invisibles fails differently, so each is measured differently. Water is a chemistry problem. Air is a time problem. Light is a body-clock problem.

Water

Your water report ends at the street.

We test your tap for what your home and pipes add after the street, read your district’s own filings for the rest, and grade all of it to where the health research says risk begins.

What your tap is graded againstWTR · PFAS

Your tap

Health lineLegal limit

Above the health line. Under the legal limit. We flag it anyway.

How we choose what to test
What we do	Contaminants	Why
Test by default	Lead, copper, THMs and HAA5 (disinfection byproducts)	Your home and pipes add these after the water leaves the plant, so your district’s report cannot see your tap. The kit tests these directly.
Read from your district report	PFAS (forever chemicals), hexavalent chromium, perchlorate, 1,4-dioxane, radionuclides	Your utility already tests for these at the source. We read their filings into your score, so you skip paying to lab-test what the report already tells us. If you want your own number, the lab test is available as an add-on.
Optional	GenX speciation, microplastics	For most homes the result points to the same fix, so we treat these as optional. One under-sink filter covers most of them either way.

Thresholds: lead EPA MCLG and CDC, THMs CA OEHHA, PFAS CA OEHHA. Any lead detection is actionable. The PFAS goal is zero.

Air

A week of readings, not a single moment.

We leave a sensor in your home for a full week and record continuously, because what hurts you spikes and fades. A single reading misses the moments that matter.

Your week, recordedPM2.5 · CO₂ · VOC

KitchenBedroomLiving

MONTUEWEDTHUFRISATSUN

Tuesday, 7pm. Cooking. PM2.5 spikes, then lingers for hours.

Overnight. CO₂ climbs in a closed bedroom while you sleep.

Cooking is one of the largest indoor sources of fine particles, and a single dinner can hang in the air for hours. You do not have to stop cooking. You just have to clear the air after. Indoor PM2.5: EPA

One honest note: a HEPA filter captures particles, not gases. Cooking fumes and off-gassing need a different tool, and your plan says which. VOCs: HOMEChem

Light

Most homes run their light backwards.

We map the light in the rooms you use against your body clock, because light is the strongest signal your body has for when to be awake and when to wind down.

Morning

Bright. Wakes up your alertness and sets tonight’s sleep clock.

Midday

Brightest. Holds the day signal through your work hours.

Afternoon

Easing down. The day signal starts to fade, on cue.

Evening

Dim only, and the stop most homes miss. Day-bright rooms at night hold your sleep hormone back.

Night

Dark. One night of dim light during sleep measurably dents your next-day metabolism. (Mason 2022, PNAS)

Outside at noon is roughly two hundred times brighter than inside your home at the same hour. By evening it flips: the rooms stay bright long after your body wants the day to end. Lighting: Brown 2022, PLOS Biology

Where the health line falls below the legal one.

For most of what we test, the government already publishes two numbers: the level where harm begins, and the limit it can enforce across a whole city. Your report is graded to where harm begins. The legal limit appears for context.

One reading, graded both waysExample · Total THMs (ppb)

Example tap · 45

Health goal ~1Legal limit 80

A tap at 45 ppb of total trihalomethanes is fully legal, and it sits more than forty times above the sum of California’s public health goals. That gap is what we grade.

The gap is not academic. The research that sets the lead line finds measurable effects on children’s developing brains with no threshold below which it is safe. Lead: CDC / EPA

Where the health research draws the line, versus the legal limit.
Contaminant	Health-based level	Legal limit	Source (health-based)
Lead (ppb)	0, no safe level	15action level; drops to 10 in 2027	EPA MCLG 0; CDC “no safe level”
PFOA (ppt)	0.007	4.0federal MCL stands; four other PFAS limits rescinded 2025-26	CA OEHHA Public Health Goal, 2024
Total THMs (ppb)	~1, sum of health goals	80	CA OEHHA PHGs, 2020
Hexavalent chromium (ppb)	0.02	10	CA OEHHA Public Health Goal
PM2.5 (µg/m³, annual)	5	9.0federal	WHO Air Quality Guideline, 2021

Health-based levels come from peer-reviewed research and government risk scientists working without cost constraints. Legal limits are enforceable compromises. Your report grades to the health column.

Why you can trust the grade.

Every reading on your report is graded against peer-reviewed health research, and every claim names its source. We hold to evidence. Not to a badge, not to a limit, not to a feeling.

We grade to the published science, we show our sources, and we tell you plainly where the evidence is settled and where it is still arguing with itself. If a concern matters to you that the research does not yet back, we say exactly that. We would rather hand you the honest edge of the evidence than sell you certainty we do not have.

Here is the part that never shows up in a number. You stop guessing. Your family is safer. And someone is watching the things you cannot see, so you do not have to. That is what staying in stasis means.

For the research behind every threshold, contaminant by contaminant, see the science. You can also read how we research and what we don’t test, and why.