{"permit":"IA0033723","name":"CITY OF ST. ANSGAR","state":"IA","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/IA0033723"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Saint Ansgar, Iowa","href":"https://www.openstreetmap.org/?mlat=43.37129&mlon=-92.93289#map=14/43.37129/-92.93289"},{"label":"Last 12 months","text":"Over a limit 10 times, last in July 2026 (pH; Solids, total suspended)"},{"label":"Permit","text":"In force until Mar 31, 2030"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":10,"over_by":[["pH",5],["Solids, total suspended",5]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"pH","times":5,"find_limits":{"parameter":"ph","place":"US-IA","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-IA&medium=surface_water"},{"parameter":"Solids, total suspended","times":5,"find_limits":{"parameter":"total suspended solids","place":"US-IA","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=total+suspended+solids&place=US-IA&medium=water_discharge"}],"limits":[{"outfall":"001","parameter":"BOD, 5-day, 20 deg. 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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-IA","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-IA&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=ph&place=US-IA&medium=surface_water","page":"https://passage-data.com/limits/US-IA/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":"IA0033723"},"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=IA0033723"},{"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":"IA0033723"},"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=IA0033723"}]}