MCP.Market

Tapwatermap MCP server

online · 100% uptime
by squidcode·io.github.squidcode/tapwatermap·v1.0.0
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Query US tap-water quality from the EPA's SDWIS records — by city, system, or contaminant.

C67/100grade C
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Safety scan
C67/100

full report

Adoption
New

Little public usage data yet

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If you have run it, two minutes of your experience saves the next person an afternoon.

Tapwatermap tools (10)

write = sends, deletes, buys or posts
  • compare_citiesFree

    Compare the EPA records of several cities side by side. Pass cities as 'City, ST' strings.

  • coverage_statsFree

    What TapWaterMap covers: states, cities, total EPA violation records, and the data quarter/date.

  • explain_contaminantFree

    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.

  • fetchFree

    Fetch the full plain-English EPA tap-water record for a city id (e.g. 'vt/burlington') returned by `search`. (ChatGPT/Deep-Research compatible.)

  • find_citiesFree

    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.

  • get_city_waterFree

    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_systemFree

    EPA record for a single water system by its PWSID (e.g. 'VT0005053'): name, population served, source, and violations.

  • list_state_citiesFree

    List all covered cities in a state (with violation counts).

  • searchFree

    Search TapWaterMap for US cities by name. Returns matching cities with an id you can pass to `fetch`. (ChatGPT/Deep-Research compatible.)

  • search_citiesFree

    Find covered US cities by name, optionally within a state. Returns counts + the page URL for each.

Public scan report

scanner v0.1.9 · 2026-09-26 · same rubric, same numbers if you re-run it

1 low
  • –Code scanremote-only server, no package to scann/a
  • Live reliabilityremote reachable in 140ms20/20
  • Tool poisoning10 tool descriptions checked15/15
  • Auth qualityopen endpoint, read-only tools10/15
  • Maintenanceno repository listed3/15
  • Maintainer identityno repository or website to verify2/10

Findings (1)

  • lowNo source repository listedmaint.no-repo
Overall 67/100. Components that don't apply are left out of the denominator. Any critical finding is an F.RubricAppeal a findingJSON

How Tapwatermap compares

Against every graded MCP server, from our own scans and uptime checks. Updated after each scan run.

Safety score
67/100
higher than 25% of 48,255 servers
Tools
10
the typical server has 7
Tools that change things
0%
typical: 0%. Fewer write tools means less an agent can break
Uptime
100%
of our recent checks; the typical remote server answers 100%
Response time
441 ms
faster than 33% of 30,031 servers

What its tools let an agent do: 10 read

Install Tapwatermap in Claude Code, Cursor or VS Code

claude mcp add --transport http tapwatermap https://mcp.tapwatermap.com/mcp
Add to Cursor

Tapwatermap: common questions

Is Tapwatermap MCP server safe?
With care: it is graded C, so read the findings first (67/100). Read the Tapwatermap safety report
How do I install Tapwatermap?
It runs remotely at mcp.tapwatermap.com. Add it to Claude Code, Cursor, VS Code or Claude Desktop with the snippets above, or call it through the mcp.market gateway without installing anything.
Does Tapwatermap need an API key?
Not as far as the registry entry and our scan can tell: no credentials are declared or required.
Is Tapwatermap maintained?
The latest release is v1.0.0.
Is Tapwatermap up?
100% of our last 28 checks got an answer. We check remote servers about four times a day.
How does Tapwatermap compare with other MCP servers?
safety score 67/100 (higher than 25% of 48,255 servers); tools 10 (the typical server has 7); tools that change things 0% (typical: 0%. Fewer write tools means less an agent can break). Full comparison.

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