{"permit":"AZ0025178","name":"City Of Casa Grande","state":"AZ","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/AZ0025178"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Casa Grande, Arizona","href":"https://www.openstreetmap.org/?mlat=32.9093&mlon=-111.78404#map=14/32.9093/-111.78404"},{"label":"Last 12 months","text":"Over a limit 5 times, last in June 2026 (Cyanide, total [as CN]; Solids, suspended percent removal; pH). 3 of 43 reports filed late"},{"label":"Permit","text":"In force until Sep 16, 2029"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":5,"over_by":[["Cyanide, total [as CN]",3],["Solids, suspended percent removal",1],["pH",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Cyanide, total [as CN]","times":3,"find_limits":{"parameter":"cyanide","place":"US-AZ","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=cyanide&place=US-AZ&medium=surface_water"},{"parameter":"pH","times":1,"find_limits":{"parameter":"ph","place":"US-AZ","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-AZ&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"monthly average","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"1600","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"2400","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"1600","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"2400","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"530","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":"<=","value":"790","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"kg/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"kg/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"1","unit":"Ratio","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"2","unit":"Ratio","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"monthly average","qualifier":"<=","value":"8.1","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"monthly average","qualifier":"<=","value":"430","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"daily maximum","qualifier":"<=","value":"820","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"monthly average","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"daily maximum","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"monthly average","qualifier":null,"value":null,"unit":"g/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"daily maximum","qualifier":null,"value":null,"unit":"g/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"monthly average","qualifier":"<=","value":"2","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"daily maximum","qualifier":"<=","value":"3","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"monthly average","qualifier":"<=","value":"90","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"daily maximum","qualifier":"<=","value":"200","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":"9","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"18","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":"480","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"960","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"monthly average","qualifier":"<=","value":"126","unit":"CFU/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"daily maximum","qualifier":"<=","value":"575","unit":"CFU/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"monthly average","qualifier":"<=","value":"2","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"daily maximum","qualifier":"<=","value":"3","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"monthly average","qualifier":"<=","value":"90","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"daily maximum","qualifier":"<=","value":"200","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"monthly average","qualifier":"<=","value":".007","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"daily maximum","qualifier":"<=","value":".02","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"monthly average","qualifier":"<=","value":".4","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"daily maximum","qualifier":"<=","value":"1","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"BOD, 5-day, percent removal","parameter_code":"81010","statistic":"monthly average minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"Solids, suspended percent removal","parameter_code":"81011","statistic":"monthly average minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)","parameter_code":"TTC1E","statistic":"monthly median","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)","parameter_code":"TTC1E","statistic":"daily maximum","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"TU Static Renewal 7-Day Chronic Ceriodaphnia dubia","parameter_code":"TTP3B","statistic":"monthly median","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"TU Static Renewal 7-Day Chronic Ceriodaphnia dubia","parameter_code":"TTP3B","statistic":"daily maximum","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"TU Static Renewal 7-Day Chronic Pimphales promelas","parameter_code":"TTP6C","statistic":"monthly median","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"001","parameter":"TU Static Renewal 7-Day Chronic Pimphales promelas","parameter_code":"TTP6C","statistic":"daily maximum","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 001"},{"outfall":"002","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"monthly average","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Temperature, water deg. centigrade","parameter_code":"00010","statistic":"daily maximum","qualifier":null,"value":null,"unit":"deg C","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"1600","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"2400","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"1600","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"2400","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"530","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":"<=","value":"790","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":null,"value":null,"unit":"kg/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":null,"value":null,"unit":"kg/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"1","unit":"Ratio","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"2","unit":"Ratio","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"monthly average","qualifier":"<=","value":"8.1","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"monthly average","qualifier":"<=","value":"430","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Cyanide, total [as CN]","parameter_code":"00720","statistic":"daily maximum","qualifier":"<=","value":"820","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"monthly average","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"daily maximum","qualifier":null,"value":null,"unit":"ug/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"monthly average","qualifier":null,"value":null,"unit":"g/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Sulfide, total [as S]","parameter_code":"00745","statistic":"daily maximum","qualifier":null,"value":null,"unit":"g/d","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"monthly average","qualifier":"<=","value":"2","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"daily maximum","qualifier":"<=","value":"3","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"monthly average","qualifier":"<=","value":"90","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"daily maximum","qualifier":"<=","value":"200","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":"9","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"18","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":"480","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"960","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"monthly average","qualifier":"<=","value":"126","unit":"CFU/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"E. coli, colony forming units [CFU]","parameter_code":"51041","statistic":"daily maximum","qualifier":"<=","value":"575","unit":"CFU/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"monthly average","qualifier":"<=","value":"2","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"daily maximum","qualifier":"<=","value":"3","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"monthly average","qualifier":"<=","value":"90","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Hydrogen sulfide","parameter_code":"71875","statistic":"daily maximum","qualifier":"<=","value":"200","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"monthly average","qualifier":"<=","value":".007","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"daily maximum","qualifier":"<=","value":".02","unit":"ug/L","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"monthly average","qualifier":"<=","value":".4","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Mercury, total recoverable","parameter_code":"71901","statistic":"daily maximum","qualifier":"<=","value":"1","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"BOD, 5-day, percent removal","parameter_code":"81010","statistic":"monthly average minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"Solids, suspended percent removal","parameter_code":"81011","statistic":"monthly average minimum","qualifier":">=","value":"85","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)","parameter_code":"TTC1E","statistic":"monthly median","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum)","parameter_code":"TTC1E","statistic":"daily maximum","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Ceriodaphnia dubia","parameter_code":"TTP3B","statistic":"monthly median","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Ceriodaphnia dubia","parameter_code":"TTP3B","statistic":"daily maximum","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Pimphales promelas","parameter_code":"TTP6C","statistic":"monthly median","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Pimphales promelas","parameter_code":"TTP6C","statistic":"daily maximum","qualifier":null,"value":null,"unit":"tox chronic","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - Outfall 002"},{"outfall":"INF","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - INF"},{"outfall":"INF","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - INF"},{"outfall":"INF","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - INF"},{"outfall":"INF","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF CASA GRANDE - WRF - INF"}],"next":[{"tool":"find_limits","says":"What do the rules say about what it went over on? find_limits gives the cited state and federal limits for it, each with its rule; `get` is the address to fetch, and `over_limits` holds one for each parameter.","arguments":{"parameter":"cyanide","place":"US-AZ","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=cyanide&place=US-AZ&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=cyanide&place=US-AZ&medium=surface_water","page":"https://passage-data.com/limits/US-AZ/cyanide"},{"tool":"check_dmr","says":"Before your user files this permit's DMR: check_dmr sets each value beside the permit's limit for that period, with EPA's violation rule's verdict.","arguments":{"permit":"AZ0025178"},"needs":{"period_end":"The reporting period: its month (2026-09).","values":"The period's values as your user will file them: [{outfall, parameter, statistic, value, unit}, ...]."},"post":"/api/v1/dmr/check","url":"https://passage-data.com/api/v1/dmr/check","page":"https://passage-data.com/dmr/?permit=AZ0025178"},{"tool":"fill_dmr","says":"Has your user the plant's raw daily results? fill_dmr computes the period's DMR values from them, each with the rows it came from.","arguments":{"permit":"AZ0025178"},"needs":{"period_end":"The reporting period: its month (2026-09).","rows":"The plant's results: [{date, parameter, value, unit, point}, ...]; or `table`, the lab's or plant's export as text."},"post":"/api/v1/dmr/fill","url":"https://passage-data.com/api/v1/dmr/fill","page":"https://passage-data.com/dmr/?permit=AZ0025178"}]}