About This Garden
The Toxicology Knowledge Garden is an open, evidence-based platform for understanding what’s in your drinking water. We bring together data from leading scientific and regulatory sources into a single, navigable experience — built for everyone from concerned parents to professional researchers.
What We Cover
Our database contains 329 substances detected in American drinking water, enriched with chemical identifiers, health effect associations, regulatory limits from multiple agencies, and real contamination data showing how many people and water systems are affected.
Data Sources
Tap water contamination data — which substances are detected, in how many water systems, and how many people are affected.
Chemical identifiers including CAS numbers, molecular formulas, SMILES notation, InChI keys, and thousands of synonyms.
Federal regulatory limits (Maximum Contaminant Levels), health goals, and toxicity assessments.
How It’s Built
This is a Knowledge Garden — part of the XR Workers ecosystem. The platform is powered by a normalized PostgreSQL database with full-text search, fuzzy matching, and trade name resolution. Every substance page is statically generated for speed and includes structured data (Schema.org JSON-LD) for AI discoverability.
The source code is open on GitHub. The database is also accessible via REST API and an MCP server for AI agents.
Important Disclaimers
This platform is for educational and informational purposes only. It is not a substitute for professional medical or environmental health advice. Health effect associations are based on published research and regulatory assessments — evidence levels vary. Always consult qualified professionals for decisions about your water quality and health.
The Knowledge Gardens
This toxicology garden is one of several Knowledge Gardens being developed. Each garden takes a complex domain — orchids, toxicology, and more to come — and makes it navigable, beautiful, and useful. Where science meets wonder.
A project by XR Workers · theknowledgegardens.com