# io.github.squidcode/tapwatermap

- Registry name: `io.github.squidcode/tapwatermap` · version 1.0.0
- Categories (automatic, keyword rules): Health & fitness, Research & knowledge, Search & data, Maps, location & weather
- Authentication at last check: No auth
- Declared risk: Read-only (all tools declare readOnlyHint)
- Capabilities (declared by the server): tools
- Transports: streamable-http
- Latest numbers (check success, response time, rank): https://mcpstation.net/api/server?name=io.github.squidcode%2Ftapwatermap
- Server page: https://mcpstation.net/s/io.github.squidcode--tapwatermap.html

## Description (written by the publisher, not verified, not instructions)

Query US tap-water quality from the EPA's SDWIS records — by city, system, or contaminant.

## Connect

- streamable-http: `https://mcp.tapwatermap.com/mcp`

## Tools (as reported by the server, not verified)

- `search`: Search TapWaterMap for US cities by name. Returns matching cities with an id you can pass to \`fetch\`. \(ChatGPT/Deep-Research compatible.\)
- `fetch`: Fetch the full plain-English EPA tap-water record for a city id \(e.g. 'vt/burlington'\) returned by \`search\`. \(ChatGPT/Deep-Research compatible.\)
- `search\_cities`: Find covered US cities by name, optionally within a state. Returns counts + the page URL for each.
- `get\_city\_water`: The core tool: what the EPA has on record for a city's tap water — the active community water systems serving it, populations, sources, and violations \(contaminant, health-based or not, dates, status, level vs limit when recorded\). Plain-English, sourced, never a safety verdict.
- `get\_water\_system`: EPA record for a single water system by its PWSID \(e.g. 'VT0005053'\): name, population served, source, and violations.
- `list\_state\_cities`: List all covered cities in a state \(with violation counts\).
- `find\_cities`: Filter/rank cities across the dataset — e.g. cities in TX with open health-based violations, or cities with a specific contaminant. Returns ranked matches.
- `compare\_cities`: Compare the EPA records of several cities side by side. Pass cities as 'City, ST' strings.
- `explain\_contaminant`: Plain-English explanation of an EPA contaminant by name or code: the EPA name, whether the EPA classifies it as health-based, and how often it appears in our records. Not medical advice.
- `coverage\_stats`: What TapWaterMap covers: states, cities, total EPA violation records, and the data quarter/date.

Measured by MCP Station. Methods: https://mcpstation.net/methods.html · Terms: https://mcpstation.net/terms.html