{"permit":"TX0047945","name":"SAN MARCOS, 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/TX0047945"},"about":[{"label":"What it is","text":"Sewage treatment plant · rated a major discharger by EPA"},{"label":"Where","text":"San Marcos, Texas","href":"https://www.openstreetmap.org/?mlat=29.865917&mlon=-97.924984#map=14/29.865917/-97.924984"},{"label":"Last 12 months","text":"Over a limit 21 times, last in August 2026 (E. coli; Nitrogen, ammonia total [as N]). 6 of 16 reports filed late"},{"label":"Permit","text":"In force until Jan 21, 2030"}],"renewal_due":null,"renewal_check":null,"sector":null,"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":21,"over_by":[["E. coli",18],["Nitrogen, ammonia total [as N]",3]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Nitrogen, ammonia total [as N]","times":3,"find_limits":{"parameter":"ammonia","place":"US-TX","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=ammonia&place=US-TX&medium=surface_water"}],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"monthly minimum","qualifier":">=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"DOMESTIC FACILITY - 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