See what's actually in the water at your address.
A personalised water health report based on your ZIP code and the people in your household. Free, source-linked, takes 30 seconds.
FreeNo email required to startUsed by OBs, longevity clinicians, and 12,000+ households
Water Health Check Report · Sample
78704 · South Austin, TX
Austin Water · Colorado River · Updated Mar 2026
Good
2 of 15 contaminants above
EWG health guidelines
| Contaminant | Level | Status |
|---|---|---|
| Total trihalomethanes | 41.7 ppb | Above EWG guideline |
| Haloacetic acids (HAA5) | 26.1 ppb | Above EWG guideline |
| Lead (90th percentile) | < 1.0 ppb | Within limits |
| PFOA | ND | Not detected |
| Nitrate | 0.43 ppm | Within limits |
How it works
Your report is built in three steps.
We find your utility
Your ZIP maps to the water system serving your address — drawn directly from EPA's Safe Drinking Water Information System, covering every public utility in the U.S.
Source: EPA SDWIS
We compare every contaminant
Each detected compound is compared against both EPA legal limits and stricter EWG health-based guidelines — so you see not just what's legal, but what the science recommends.
Includes UCMR5 PFAS results
We personalise for your household
Tell us who drinks your water and we surface the contaminants that matter most for each person's biology — pregnant, infant, immunocompromised, performance-focused.
Informed by NTP & IARC classifications
Built for three people
One tool. Three serious audiences.
For pregnancy and fertility
Chlorination byproducts, nitrates, lead, and PFAS all carry documented risks in pregnancy and early development. We surface those contaminants first, with citations you can bring to your OB.
Read the pregnancy guide →For longevity and performance
Optimise your inputs, not just your outputs. Understand your chronic daily exposure profile — including emerging contaminants EWG flags but regulators haven't yet restricted.
Read the longevity guide →For clinicians and practitioners
Order a Water Health Check for any patient address. PDF reports are citation-linked and designed to enter the clinical conversation — not replace it.
Open the practitioner portal →Sources & methodology
Where the data comes from.
Every number in your report has a source. We don't estimate, interpolate, or infer. If the data isn't in the public record, we say so.
Read full methodology →Safe Drinking Water Information System — the federal database of all public water system violations and monitoring results. Updated quarterly.
Unregulated Contaminant Monitoring Rule 5 — the most comprehensive PFAS dataset in public water ever compiled, released 2023–2025.
EWG health-based guidelines are used as comparison benchmarks only — stricter than EPA limits, derived from peer-reviewed toxicology.
Select states publish supplementary monitoring data beyond federal requirements. We incorporate these where available.
Trusted by
Used by practitioners who take water seriously.
We don't do first-name testimonials. We name the clinicians who've integrated WaterHealthCheck into their practice and what they're using it for.
Open practitioner portal →Dr. Sarah Kim, MD
Maternal-fetal medicine · Stanford Medicine · First-trimester environmental intake assessment
Dr. Marcus Torres, ND
Naturopathic oncology · Portland, OR · New-patient environmental load assessments
Dr. Amara Johanssen, DO
Longevity medicine · Austin, TX · Environmental pillar of longevity protocols
Free · No email required · 30 seconds
See what's actually in your water.
A personalised report built on official EPA data — free in 30 seconds, no email required to start.