{"permit":"MS0001261","name":"ENTERGY MISSISSIPPI LLC, GERALD ANDRUS PLANT","state":"MS","as_of":"2026-10-22","source":{"publisher":"U.S. EPA — ECHO / ICIS-NPDES national file","as_of":"2026-10-22","page":"/dmr/p/MS0001261"},"about":[{"label":"What it is","text":"Electric Services (EPA's industry listing) · rated a major discharger by EPA"},{"label":"Where","text":"Greenville, Mississippi","href":"https://www.openstreetmap.org/?mlat=31.358250&mlon=-89.284139#map=14/31.358250/-89.284139"},{"label":"Last 12 months","text":"No values over a limit"},{"label":"Permit","text":"In force until Sep 30, 2029"}],"renewal_due":null,"renewal_check":null,"sector":{"state":"MS","sic":"4911","permits":20,"list":"https://passage-data.com/api/v1/permits?state=MS&sic=4911","page":"https://passage-data.com/dmr/s/MS/4911"},"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":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"maximum monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"monthly maximum","qualifier":"<=","value":".5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Chlorine, free available","parameter_code":"50064","statistic":"monthly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Chlorine, free available","parameter_code":"50064","statistic":"monthly maximum","qualifier":"<=","value":".2","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Temp. diff. between intake and discharge","parameter_code":"61576","statistic":"monthly average","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"Temp. diff. between intake and discharge","parameter_code":"61576","statistic":"monthly maximum","qualifier":null,"value":null,"unit":"deg F","report_only":true,"enforceable":true,"months":"all","limit_set":"ONCE THROUGH COOLING WATER"},{"outfall":"001","parameter":"LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia","parameter_code":"TAM3B","statistic":"minimum","qualifier":">=","value":"1","unit":"%","report_only":false,"enforceable":true,"months":"all","limit_set":"ACUTE TOXICITY"},{"outfall":"001","parameter":"LC50 Static Renewal 48Hr Acute Ceriodaphnia dubia","parameter_code":"TAM3B","statistic":"daily maximum","qualifier":null,"value":null,"unit":"%","report_only":true,"enforceable":true,"months":"all","limit_set":"ACUTE TOXICITY"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"quarterly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"BOD, 5-day, 20 deg. C","parameter_code":"00310","statistic":"quarterly maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"quarterly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"quarterly maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"quarterly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"quarterly maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"quarterly average","qualifier":null,"value":null,"unit":"mg/L","report_only":true,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"Chlorine, total residual","parameter_code":"50060","statistic":"quarterly maximum","qualifier":"<=","value":".5","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"E. coli","parameter_code":"51040","statistic":"quarterly average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"002","parameter":"E. coli","parameter_code":"51040","statistic":"quarterly maximum","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"TREATED SANITARY WASTEWATER"},{"outfall":"003","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly maximum","qualifier":"<=","value":"100","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly maximum","qualifier":"<=","value":"20","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"maximum weekly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"pH range excursions, > 60 minutes","parameter_code":"82581","statistic":"monthly total","qualifier":"<=","value":"0","unit":"occur/mo","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"003","parameter":"pH range excursions, monthly total accum","parameter_code":"82582","statistic":"monthly total","qualifier":"<=","value":"446","unit":"min","report_only":false,"enforceable":true,"months":"all","limit_set":"LOW VOLUME WW_& STORMWATER"},{"outfall":"004","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"monthly maximum","qualifier":"<=","value":"100","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly maximum","qualifier":"<=","value":"20","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Iron, total recoverable","parameter_code":"00980","statistic":"monthly average","qualifier":"<=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Iron, total recoverable","parameter_code":"00980","statistic":"monthly maximum","qualifier":"<=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Copper, total recoverable","parameter_code":"01119","statistic":"annual average","qualifier":"<=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Copper, total recoverable","parameter_code":"01119","statistic":"annual maximum","qualifier":"<=","value":"1","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"maximum monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"pH range excursions, > 60 minutes","parameter_code":"82581","statistic":"monthly total","qualifier":"<=","value":"0","unit":"occur/mo","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"},{"outfall":"004","parameter":"pH range excursions, monthly total accum","parameter_code":"82582","statistic":"monthly total","qualifier":"<=","value":"446","unit":"min","report_only":false,"enforceable":true,"months":"all","limit_set":"METAL CLEANING WASTEWATER"}],"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":"MS","sic":"4911"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MS&sic=4911","url":"https://passage-data.com/api/v1/permits?state=MS&sic=4911","page":"https://passage-data.com/dmr/s/MS/4911"},{"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":"MS0001261"},"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=MS0001261"},{"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":"MS0001261"},"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=MS0001261"}]}