v1

latestSwagger 2.0U.S. Public Domain License2026-07-1481142.6 KB
Lookups

ECHO CWA Parameter Lookup Service

Look up Clean Water Act parameter codes and descriptions in the Integrated Compliance Information System - National Pollutant Discharge Elimination System (ICIS-NPDES) by code or term.

get/rest_lookups.cwa_parameters

Query parameters

output'JSONP' | 'JSON' | 'XML'

Output Format Flag. Enter one of the following keywords:

  • JSON = Data model formatted as Javascript Object Notation (default).
  • JSONP = Data model formatted as Javascript Object Notation with Padding.
  • XML = Data model formatted as Extensible Markup Language.
callbackstring

JSONP Callback. For use with JSONP and GEOJSONP output only. Enter a name of the function in which to wrap the JSON response.

search_termstring

Enter a partial or complete search phrase or word.

search_codestring

Enter a partial or complete code value.

Response

Returns an array of parameter codes and descriptions that contain the search_term or search_code entered. If search term or search code not provided, returns all values. ValueCode is the 5-digit parameter code. ValueDescription is the parameter description.

Example response

{
  "Results": {
    "LuValues": [
      {
        "ValueCode": "77034",
        "ValueDescription": "1-Butanol"
      }
    ],
    "Message": "Success"
  }
}