Drinking Water — EPA SDWIS: Water Systems & Health-Based Violations
link.morningbrief/drinking-watermorningbrief.linkstreamable-httpv1.0.0Scanned
EPA drinking water data: 434,757 public water systems, current health-based violations. No key.
6 tools: 6 only read.
- Reads private data · 0
- Reads text others write · 0
- Can send data out · 0
- No findings
Anlyon alternative
Run the operations that matter as governed actions.
Declare what an action changes, and Anlyon puts it under a shared limit, binds every approval to the exact request, and grades the outcome. It works on any HTTPS API you can describe as an action.
Anlyon does not run, proxy or govern this MCP server. A tool your own code calls directly is not routed through Anlyon and is not governed by it.
Import an OpenAPI spec →Tools
Grouped by what each tool does, most consequential first. Open one for its reasons and full description; descriptions are the publisher's own words.
6 tools
Only reads 6Show 6 read-only tools
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 m…No findings
Why it is in this group
- The name "get_county_water_summary" says "get": a word for reading.
Description, as the server wrote it Summarize 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 (uppercase). A county summary covers every system serving any part of the county; it is not a verdict on the water system at a specific address.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
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-techniqu…No findings
Why it is in this group
- The name "get_current_health_violations" says "get": a word for reading.
Description, as the server wrote it List 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, by PWSID, or by contaminant code; most recent compliance periods first.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
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…No findings
Why it is in this group
- The name "get_state_water_summary" says "get": a word for reading.
Description, as the server wrote it Summarize 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.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
get_water_systemLook up one US public water system by its PWSID (e.g.No findings
Why it is in this group
- The name "get_water_system" says "get": a word for reading.
Description, as the server wrote it Look 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, MRDL, and treatment-technique violations) from EPA SDWIS.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
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 violatio…No findings
Why it is in this group
- The name "list_contaminants_with_violations" says "list": a word for reading.
Description, as the server wrote it List 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.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
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), …No findings
Why it is in this group
- The name "search_water_systems" says "search": a word for reading.
Description, as the server wrote it Search 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 current health-based violations.
Annotations the server declares
- readOnlyHint: true
- destructiveHint: false
- openWorldHint: false
This is not a safety rating, and no finding is not a safety guarantee. The groups and findings come from fixed checks of the tool definitions the server returned on the date shown, not from its code or what it does when called. How the checks work.
Exfil surface
Which tools read private data, which read text someone else can write, and which can send data out. One of each is a path a prompt injection can use.
No private-data, untrusted-input, outbound path in this server alone: no tool is tagged private-data or untrusted-input or outbound.
- Reads private data0
- Reads files, mail, messages, databases, secrets, calendars or repositories.
- Reads text others write0
- Brings in text someone else can write: web pages, inbound email, messages, issues and comments.
- Can send data out0
- Can carry data to people or systems: it sends, posts or publishes, or takes a recipient, channel or URL.
Other servers in the same agent add their own tools to these paths. Audit your whole setup to see them together.
Findings
Matches of fixed checks, with the text they matched.
No check matched anything in these tool definitions. That is not a safety guarantee.
History
Changes to its tool definitions and to its remote endpoint, newest first.
No change seen yet. Its tools are rescanned every day, and a remote endpoint is looked at once a week.
Install
Pinned to version 1.0.0. Values in angle brackets are yours to fill in.
claude mcp add --transport http drinking-water https://water.morningbrief.link/mcpclaude mcp add --transport http drinking-water https://water.morningbrief.link/mcpRun in a terminal.
Claude Code permissions
Allow the reads, ask before a change or a way out, deny the deletes. Paste into .claude/settings.json.
{
"permissions": {
"allow": [
"mcp__drinking-water__get_water_system",
"mcp__drinking-water__search_water_systems",
"mcp__drinking-water__get_county_water_summary",
"mcp__drinking-water__get_state_water_summary",
"mcp__drinking-water__get_current_health_violations",
"mcp__drinking-water__list_contaminants_with_violations"
],
"ask": [],
"deny": []
}
}Tools that only read are allowed, tools that change things ask first, tools that delete or cancel are denied. A read that can send data out (it takes a URL, say) asks first too. It assumes the server is installed as drinking-water. Review it before you use it.
Pin
Keep the decision: fail CI when the tools change, follow every change, or show a badge.
Pin in CI
Fail a build when the tools you reviewed are not the tools the server serves today.
curl -s "https://anlyon.dev/api/v1/servers/link.morningbrief/drinking-water/verify?hash=32b49f52641483cc6c83114020ca220c62b2a6d089e263f91180abe90cef544d" | jq -e '.changed == false'Pinned hash 32b49f526414, from Nov 1, 2026, 19:18 UTC.
Watch
Get told when its tools change: a new tool, a new description, a new class.
https://anlyon.dev/servers/link.morningbrief/drinking-water/changes.xmlAn Atom feed. Works in any feed reader or Slack's RSS app.
Badge
[](https://anlyon.dev/servers/link.morningbrief/drinking-water)Source: MCP Registry. Synced Nov 1, 2026, 19:18 UTC.