The Water Map

Developers

Build on the verified water data.

Every contaminant measurement on the map is verified against the utility's own report. We're opening that dataset up two ways — a REST API and an MCP server. Tell us what you'd build and we'll get you early access.

REST API

Query the verified dataset over HTTP — water systems, contaminants, measured levels and federal limits, all as JSON. Built for dashboards, research, and apps.

MCP server

Wire The Water Map straight into Claude, Cursor, or any MCP client. Ask your assistant what's in a city's water and it answers from the live, verified data.

What do you want access to?

No public endpoint yet — requests go straight to our team.