{"permit":"IL0048518","name":"AURORA, CITY OF","state":"IL","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/IL0048518"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Aurora, Illinois","href":"https://www.openstreetmap.org/?mlat=41.741667&mlon=-88.326667#map=14/41.741667/-88.326667"},{"label":"Last 12 months","text":"Over a limit once, last in July 2026 (Coliform, fecal general). 3 of 176 reports filed late"},{"label":"Permit","text":"Expired Jul 31, 2026; its limits still apply until a new permit is issued, and EPA still expects the reports"}],"renewal_due":null,"renewal_check":{"offered_because":"permit_expired","application_due":"2026-02-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/IL0048518#renewal","says":"Each limit a renewal could tighten or add, from the state's water-quality standards and the federal rules for this kind of discharge, each cited to its rule, beside EPA's 12-month record; a rule we do not hold is named, never guessed. A person orders it on the permit's page with their email; it is sent by email within 5 business days."},"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":1,"over_by":[["Coliform, fecal general",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO RATHBONE"},{"outfall":"002","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO EAST ILLINOIS"},{"outfall":"004","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO HAZEL"},{"outfall":"005","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO THIRD"},{"outfall":"008","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO BENTON"},{"outfall":"010","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO FIRST"},{"outfall":"015","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO WEST BENTON"},{"outfall":"017","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO STOLP"},{"outfall":"018","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO WEST GALENA"},{"outfall":"021","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO WEST PARK (FORMERLY ELM)"},{"outfall":"022","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO SUPERIOR"},{"outfall":"023","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO WEST ILLINOIS"},{"outfall":"025","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO -DEARBORN-TRASK"},{"outfall":"027","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":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","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":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","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":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":"<=","value":".75","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","parameter":"Coliform, fecal general","parameter_code":"74055","statistic":"daily maximum","qualifier":"<=","value":"400","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"027","parameter":"Flow, total","parameter_code":"82220","statistic":"monthly total","qualifier":null,"value":null,"unit":"Mgal/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"COMBINED SEWAGE OUTFALL- NORTH BROADWAY"},{"outfall":"A03","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO PIERCE"},{"outfall":"A16","parameter":"Overflows","parameter_code":"74062","statistic":"monthly total","qualifier":null,"value":null,"unit":"#/mo","report_only":true,"enforceable":true,"months":"all","limit_set":"CSO CLARK"}],"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":"IL0048518"},"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=IL0048518"},{"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":"IL0048518"},"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=IL0048518"}]}