{"permit":"AR0021440","name":"Smackover, City of","state":"AR","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/AR0021440"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Smackover, Arkansas","href":"https://www.openstreetmap.org/?mlat=33.371500&mlon=-92.722472#map=14/33.371500/-92.722472"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Feb 28, 2029"}],"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":[],"upcoming":[{"parameter":"Chlorine, total residual","outfall":"001","limit":0.014,"unit":"mg/L","statistic":"instantaneous maximum","statistic_code":"IA","begin":"2027-03-01","kind":"new","now":{"median":0.2,"n":11},"times_limit":14.3}],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"5","unit":"mg/L","report_only":false,"enforceable":true,"months":["JAN","FEB","MAR","APR","NOV","DEC"],"limit_set":"001-Monthly Treated Municipal WW"},{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"instantaneous minimum","qualifier":">=","value":"3","unit":"mg/L","report_only":false,"enforceable":true,"months":["MAY","JUN","JUL","AUG","SEP","OCT"],"limit_set":"001-Monthly Treated Municipal WW"},{"outfall":"001","parameter":"BOD, 5-day, 20 deg. 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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=AR0021440"}]}