{"permit":"IA0052182","name":"CITY OF AFTON","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/IA0052182"},"about":[{"label":"What it is","text":"Amusement And Recreation (EPA's industry listing)"},{"label":"Where","text":"Afton, Iowa","href":"https://www.openstreetmap.org/?mlat=41.02859&mlon=-94.19692#map=14/41.02859/-94.19692"},{"label":"Last 12 months","text":"Over a limit 6 times, last in September 2026 (Chlorine, total residual)"},{"label":"Permit","text":"Expired Jul 31, 2020; 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":"2020-02-02","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/IA0052182#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":{"state":"IA","sic":"79","permits":11,"list":"https://passage-data.com/api/v1/permits?state=IA&sic=79","page":"https://passage-data.com/dmr/s/IA/79"},"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":6,"over_by":[["Chlorine, total residual",6]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Chlorine, total residual","times":6,"find_limits":{"parameter":"chlorine","place":"US-IA","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=chlorine&place=US-IA&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6.5","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"30-day average","qualifier":"<=","value":".01","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":".021","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"30-day average","qualifier":"<=","value":".0029","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"daily maximum","qualifier":"<=","value":".006","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"}],"next":[{"tool":"list_permits","says":"Screening this industry? list_permits lists every permit of it in this state in one call, each with its page and its get_permit address; `get` is the address to fetch.","arguments":{"state":"IA","sic":"79"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=IA&sic=79","url":"https://passage-data.com/api/v1/permits?state=IA&sic=79","page":"https://passage-data.com/dmr/s/IA/79"},{"tool":"find_limits","says":"What do the rules say about what it went 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":"chlorine","place":"US-IA","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=chlorine&place=US-IA&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=chlorine&place=US-IA&medium=surface_water","page":"https://passage-data.com/limits/US-IA/chlorine"},{"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":"IA0052182"},"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=IA0052182"},{"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":"IA0052182"},"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=IA0052182"}]}