{"permit":"MI0020532","name":"City of Allegan","state":"MI","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MI0020532"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"Allegan, Michigan","href":"https://www.openstreetmap.org/?mlat=42.5353&mlon=-85.8539#map=14/42.5353/-85.8539"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Oct 1, 2030"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"daily 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