{"permit":"IA0023736","name":"CITY OF DOON","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/IA0023736"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Doon, Iowa","href":"https://www.openstreetmap.org/?mlat=43.26848&mlon=-96.23637#map=14/43.26848/-96.23637"},{"label":"Last 12 months","text":"Over a limit 18 times, last in June 2026 (Chloride [as Cl]; E. coli; BOD, carbonaceous [5 day, 20 C]). 4 of 12 reports filed late"},{"label":"Permit","text":"In force until Nov 30, 2027"}],"renewal_due":null,"renewal_check":{"offered_because":"application_due_within_18_months","application_due":"2027-06-03","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/IA0023736#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":18,"over_by":[["Chloride [as Cl]",14],["E. coli",2],["BOD, carbonaceous [5 day, 20 C]",1]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Chloride [as Cl]","times":14,"find_limits":{"parameter":"chloride","place":"US-IA","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=chloride&place=US-IA&medium=surface_water"},{"parameter":"BOD, carbonaceous [5 day, 20 C]","times":1,"find_limits":{"parameter":"cbod5","place":"US-IA","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=cbod5&place=US-IA&medium=water_discharge"}],"limits":[{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"daily minimum","qualifier":">=","value":"6.3","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":"Solids, total suspended","parameter_code":"00530","statistic":"30-day average","qualifier":"<=","value":"80","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"7-day average","qualifier":"<=","value":"120","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"30-day average","qualifier":"<=","value":"615","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"daily maximum","qualifier":"<=","value":"657","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"30-day average","qualifier":"<=","value":"2258","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"Chloride [as Cl]","parameter_code":"00940","statistic":"daily maximum","qualifier":"<=","value":"2410","unit":"lb/d","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"geometric mean","qualifier":"<=","value":"235","unit":"#/100mL","report_only":false,"enforceable":true,"months":["MAR","APR","MAY","JUN","JUL","AUG","SEP","OCT","NOV"],"limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"30-day average","qualifier":"<=","value":"25","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"7-day average","qualifier":"<=","value":"40","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"MONTHLY"}],"next":[{"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":"chloride","place":"US-IA","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=chloride&place=US-IA&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=chloride&place=US-IA&medium=surface_water","page":"https://passage-data.com/limits/US-IA/chloride"},{"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":"IA0023736"},"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=IA0023736"},{"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":"IA0023736"},"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=IA0023736"}]}