{"permit":"AZ0025241","name":"City Of Mesa - Water Resources","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/AZ0025241"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Gilbert, Arizona","href":"https://www.openstreetmap.org/?mlat=33.26981&mlon=-111.74195#map=14/33.26981/-111.74195"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Sep 8, 2029"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"monthly average","qualifier":"<=","value":"3400","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"weekly average","qualifier":"<=","value":"5100","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"3400","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"weekly average","qualifier":"<=","value":"5100","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"monthly average","qualifier":"<=","value":"200","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Selenium, total recoverable","parameter_code":"00981","statistic":"daily maximum","qualifier":"<=","value":"300","unit":"g/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":"1","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":"2","unit":"kg/d","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Pass/Fail Static 96Hr Acute Ceriodaphnia Dubia","parameter_code":"TGB3B","statistic":"monthly median","qualifier":"<=","value":"0","unit":"pass=0;fail=1","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas","parameter_code":"TGN6C","statistic":"monthly median","qualifier":"<=","value":"0","unit":"pass=0;fail=1","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Ceriodaphnia dubia","parameter_code":"TTP3B","statistic":"monthly median","qualifier":"<=","value":"1","unit":"tox chronic","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Ceriodaphnia dubia","parameter_code":"TTP3B","statistic":"daily maximum","qualifier":"<=","value":"1.6","unit":"tox chronic","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Pimphales promelas","parameter_code":"TTP6C","statistic":"monthly median","qualifier":"<=","value":"1","unit":"tox chronic","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"outfall":"002","parameter":"TU Static Renewal 7-Day Chronic Pimphales promelas","parameter_code":"TTP6C","statistic":"daily maximum","qualifier":"<=","value":"1.6","unit":"tox chronic","report_only":false,"enforceable":true,"months":"all","limit_set":"CITY OF MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"},{"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 MESA - GREENFIELD WATER RECLAMATION PLANT"}],"next":[{"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":"AZ0025241"},"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=AZ0025241"},{"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":"AZ0025241"},"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=AZ0025241"}]}