{"permit":"MS0021610","name":"NASA JOHN C STENNIS SPACE CENTER","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/MS0021610"},"about":[{"label":"What it is","text":"Federal facility · Space Research And Technology (EPA's industry listing)"},{"label":"Where","text":"John C Stennis Space Center, Mississippi","href":"https://www.openstreetmap.org/?mlat=30.348139&mlon=-89.613361#map=14/30.348139/-89.613361"},{"label":"Last 12 months","text":"Over a limit 6 times, last in August 2026 (Oxygen, dissolved [DO]; Oil & Grease)"},{"label":"Permit","text":"In force until Jan 31, 2028"}],"renewal_due":null,"renewal_check":{"offered_because":"application_due_within_18_months","application_due":"2027-08-04","price":"free while piloted","order_page":"https://passage-data.com/dmr/p/MS0021610#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":{"state":"MS","sic":"96","permits":9,"list":"https://passage-data.com/api/v1/permits?state=MS&sic=96","page":"https://passage-data.com/dmr/s/MS/96"},"limits_from_version":null,"record":{"last_filed":"2026-08-31","over":6,"over_by":[["Oxygen, dissolved [DO]",4],["Oil & Grease",2]],"window":["2025-10-01","2026-09-30"]},"over_limits":[{"parameter":"Oxygen, dissolved [DO]","times":4,"find_limits":{"parameter":"dissolved oxygen","place":"US-MS","medium":"surface_water"},"get":"https://passage-data.com/api/v1/limits?parameter=dissolved+oxygen&place=US-MS&medium=surface_water"},{"parameter":"Oil & Grease","times":2,"find_limits":{"parameter":"oil grease","place":"US-MS","medium":"water_discharge"},"get":"https://passage-data.com/api/v1/limits?parameter=oil+grease&place=US-MS&medium=water_discharge"}],"limits":[{"outfall":"001","parameter":"Oxygen, dissolved [DO]","parameter_code":"00300","statistic":"minimum","qualifier":">=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","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":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"monthly average","qualifier":"<=","value":"6","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Nitrogen, ammonia total [as N]","parameter_code":"00610","statistic":"daily maximum","qualifier":"<=","value":"9","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"monthly average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"E. coli","parameter_code":"51040","statistic":"daily maximum","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"001","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","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":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"monthly average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"daily maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"E. coli","parameter_code":"51040","statistic":"monthly average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"E. coli","parameter_code":"51040","statistic":"daily maximum","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"002","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY COOLING WASH"},{"outfall":"008","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"annual average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"annual maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"annual average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"annual maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"annual average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"annual maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"annual average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"annual maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"E. coli","parameter_code":"51040","statistic":"annual average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"E. coli","parameter_code":"51040","statistic":"annual maximum","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"annual average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"008","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"annual maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR SOUTH ENTRANCE"},{"outfall":"010","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"annual average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"annual maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"annual average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Nitrogen, total [as N]","parameter_code":"00600","statistic":"annual maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"annual average","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Phosphorus, total [as P]","parameter_code":"00665","statistic":"annual maximum","qualifier":null,"value":null,"unit":"lb/d","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"annual average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"annual maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"E. coli","parameter_code":"51040","statistic":"annual average","qualifier":"<=","value":"126","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"E. coli","parameter_code":"51040","statistic":"annual maximum","qualifier":"<=","value":"410","unit":"#/100mL","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"annual average","qualifier":"<=","value":"30","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"010","parameter":"BOD, carbonaceous [5 day, 20 C]","parameter_code":"80082","statistic":"annual maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"SANITARY WW FOR NORTH ENTRANCE"},{"outfall":"011","parameter":"pH","parameter_code":"00400","statistic":"minimum","qualifier":">=","value":"6","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","parameter":"pH","parameter_code":"00400","statistic":"maximum","qualifier":"<=","value":"9","unit":"SU","report_only":false,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","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":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","parameter":"Solids, total suspended","parameter_code":"00530","statistic":"daily maximum","qualifier":"<=","value":"45","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","parameter":"Oil & Grease","parameter_code":"00556","statistic":"monthly average","qualifier":"<=","value":"10","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","parameter":"Oil & Grease","parameter_code":"00556","statistic":"daily maximum","qualifier":"<=","value":"15","unit":"mg/L","report_only":false,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"monthly average","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"},{"outfall":"011","parameter":"Flow, in conduit or thru treatment plant","parameter_code":"50050","statistic":"daily maximum","qualifier":null,"value":null,"unit":"MGD","report_only":true,"enforceable":true,"months":"all","limit_set":"DELUGE WATER/ROCKET TEST STANDS"}],"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":"96"},"needs":{},"get":"https://passage-data.com/api/v1/permits?state=MS&sic=96","url":"https://passage-data.com/api/v1/permits?state=MS&sic=96","page":"https://passage-data.com/dmr/s/MS/96"},{"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":"dissolved oxygen","place":"US-MS","medium":"surface_water"},"needs":{},"get":"https://passage-data.com/api/v1/limits?parameter=dissolved+oxygen&place=US-MS&medium=surface_water","url":"https://passage-data.com/api/v1/limits?parameter=dissolved+oxygen&place=US-MS&medium=surface_water","page":"https://passage-data.com/limits/US-MS/dissolved-oxygen"},{"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":"MS0021610"},"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=MS0021610"},{"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":"MS0021610"},"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=MS0021610"}]}