tapwatermap

Tools

Token cost is the o200k count of the tools list JSON, including schemas, before any tool is called.

• 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,

• 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.