Drinking Water — EPA SDWIS: Water Systems & Health-Based Violations

link.morningbrief/drinking-water · v1.0.0 · health-and-science

Drinking Water — EPA SDWIS: Water Systems & Health-Based Violations is healthy: it completed an MCP handshake in 462 ms and exposes 6 tools.

EPA drinking water data: 434,757 public water systems, current health-based violations. No key.

Endpoint: https://water.morningbrief.link/mcp (streamable-http)

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Facts

Users (last 30 days)0
HandshakeHealthy
Auth neededNone
Tool count6
Latency462 ms
Last checked (UTC)2026-11-01T19:50:24.635Z

Health history

Checked (UTC)StatusLatencyError
2026-11-01T19:50:24.635ZHealthy462

Tools (6)

get_water_systemLook up one US public water system by its PWSID (e.g. IL0970450). Returns the system's identity, type (community, transient, non-transient non-community), population served, service connections, owner and source type, the counties it serves, and its current health-based violations (unresolved MCL, M
search_water_systemsSearch US public water systems by name, and optionally narrow by state (two-letter code), county name as reported to SDWIS (requires state), system type code (CWS, NTNCWS, TNCWS), or active systems only. Results are ordered by population served, largest first, and each result includes its count of c
get_county_water_summarySummarize public water systems serving a US county: how many systems (and how many active), total population served, how many systems have current health-based violations and how many such violations are open, plus the worst-affected systems in the county. County names are as reported to SDWIS (uppe
get_state_water_summarySummarize public water systems for a whole US state: system counts, population served, systems with current health-based violations, and the counties with the most affected systems. Data is EPA SDWIS.
get_current_health_violationsList current (unresolved) health-based drinking water violations from EPA SDWIS: maximum contaminant level (MCL), maximum residual disinfectant level (MRDL), and treatment-technique violations whose status is Unaddressed or Addressed. Monitoring and reporting violations are excluded. Filter by state
list_contaminants_with_violationsList every contaminant that has at least one current health-based violation in EPA SDWIS, with the number of open violations and the number of water systems affected, most violations first. Useful for seeing which contaminants drive current US drinking water violations.