TapWaterMap — US Tap Water Quality from EPA Data

Created By
Squidcode LLC2 hours ago
Query US tap-water quality from the EPA's own SDWIS records: the water systems serving a city, contaminants and violations on record (with dates and whether the EPA classifies them as health-based), compare cities, and explain contaminants. Public, no-auth, read-only — ~19,000 cities across all 50 states + DC, ~1.5M EPA records. Every response reports what the EPA recorded, never a safety verdict.
Overview

TapWaterMap MCP

A free, public MCP server for US tap-water quality, built on the EPA's Safe Drinking Water Information System (SDWIS). Covers ~19,000 cities across all 50 states + DC, summarizing ~1.5M EPA violation records. Public, no-auth, read-only. Every response reports what the EPA recorded — never a safety verdict.

Endpoint (Streamable HTTP): https://mcp.tapwatermap.com/mcp

Install — add as a custom connector, no authentication:

  • ChatGPT: Settings → Connectors (Developer Mode) → Add → paste the URL.
  • Claude: Settings → Connectors → Add custom connector → paste the URL.

Tools: search, fetch, get_city_water, get_water_system, search_cities, list_state_cities, find_cities, compare_cities, explain_contaminant, coverage_stats.

Docs: https://tapwatermap.com/developers/ · Source data: U.S. EPA Envirofacts SDWIS.

Server Config

{
  "mcpServers": {
    "tapwatermap": {
      "url": "https://mcp.tapwatermap.com/mcp"
    }
  }
}
Project Info
Created At
2 hours ago
Updated At
2 hours ago
Author Name
Squidcode LLC
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