water
environment
read-only
free
free

Drinking water systems (EPA SDWIS)

Active public water systems serving a county from EPA SDWIS via Envirofacts, for buyer, owner and lender agents. Returns systems with ECHO violation-history links. National by address, place, point, or state and county. Regulatory records only, not a water-quality verdict, exposure finding, or safety score. Use this when you can call Locus free tools (REST tools/call or MCP). Use locus-water-systems instead when your client can only call paid x402 routes; it returns the same records. Direct flat-body route for this one free resource; no API key, payment, or catalog wrapper. Return only the cited bounded evidence described here; this route never produces a paid brief or full report.

post/api/locus_water_systems

Request

  • Base URL: https://api.locus.report
  • URL: https://api.locus.report/api/locus_water_systems
  • Auth: none required

Request body

addressstring

Optional US street address or place; NC uses AddressNC first, other areas use the national geocoder fallback when latitude/longitude are not provided.

latitudenumber

Optional decimal latitude; provide with longitude to skip address geocoding.

longitudenumber

Optional decimal longitude; provide with latitude to skip address geocoding.

placestring

Optional US street address or unambiguous place; used to derive state+county when explicit state+county are not provided.

statestring

Optional two-letter state code, e.g. NC; provide with county to skip point/place resolution.

countystring

Optional county name, e.g. Wake or Wake County; provide with state to skip point/place resolution.

Response

Free cited evidence response.

object required

Changes

No recorded changes to this operation across all 1 revision of this API.