| downloadDMRs | Download Multiple DMRs |
| echoAirGetFacilityInfo | Downloads EPA ECHO permitted air emitter information |
| echoAirGetMeta | Downloads EPA ECHO Air Facility Metadata |
| echoGetCAAPR | Download EPA ECHO emissions inventory report data |
| echoGetEffluent | Downloads EPA ECHO DMR records of dischargers with NPDES permits |
| echoGetFacilities | Downloads permitted facility information |
| echoGetReports | Downloads self reported discharge and emissions data |
| echoNNCRGetQuarters | Downloads available NPDES Noncompliance Report (NNCR) fiscal year quarters |
| echoNNCRGetReport | Downloads a NPDES Noncompliance Report (NNCR) facility/permit report |
| echoNNCRGetSearch | Searches the NPDES Noncompliance Report (NNCR) |
| echoNNCRGetViolations | Downloads detailed NPDES Noncompliance Report (NNCR) violations |
| echoSDWGetMeta | Downloads EPA ECHO Safe Drinking Water Facilities Metadata |
| echoSDWGetSystems | Downloads public water system information |
| echoWaterGetFacilityInfo | Downloads EPA ECHO water facility information |
| echoWaterGetMeta | Downloads EPA ECHO Water Facility Metadata |
| echoWaterGetParams | Search parameter codes for Clean Water Act permits on EPA ECHO |