{"permit":"MN0051535","name":"Elbow Lake city of","state":"MN","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MN0051535"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Elbow Lake, Minnesota","href":"https://www.openstreetmap.org/?mlat=45.9789362&mlon=-96.0030326#map=14/45.9789362/-96.0030326"},{"label":"Last 12 months","text":"Over a limit once, last in November 2025 (pH)"},{"label":"Permit","text":"In force until Feb 28, 2027"}],"renewal_due":{"date":"2026-09-01","when":"Sep 1, 2026, overdue","urgent":true},"renewal_check":{"offered_because":"application_overdue","application_due":"2026-09-01","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/MN0051535#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":"2026-09-30","over":1,"over_by":[["pH",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"pH","times":1,"find_limits":{"parameter":"ph","place":"US-MN","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-MN&medium=surface_water"}],"limits":[{"outfall":"D001","parameter":"Specific conductance","parameter_code":"00095","statistic":"monthly maximum","qualifier":null,"value":null,"unit":"umho/cm","report_only":true,"enforceable":true,"months":"all","limit_set":null},{"outfall":"D001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"monthly 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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":"ph","place":"US-MN","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-MN&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-MN&medium=surface_water","page":"https://passage-data.com/limits/US-MN/ph"},{"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":"MN0051535"},"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}, 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