{"permit":"TX0063096","name":"MOUNT VERNON,CITY OF","state":"TX","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/TX0063096"},"about":[{"label":"What it is","text":"Sewage treatment plant"},{"label":"Where","text":"Mount Vernon, Texas","href":"https://www.openstreetmap.org/?mlat=33.193611&mlon=-95.219166#map=14/33.193611/-95.219166"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Jun 18, 2031"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-09-30","over":0,"over_by":[],"window":["2025-10-01","2026-09-30"]},"over_limits":[],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"monthly minimum","qualifier":">=","value":"4","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"DOMESTIC FACILITY - 001"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"DOMESTIC FACILITY - 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