INDIANAPOLIS INTERNATIONAL AIRPORT

NPDES permit IN0058238 · Minor NON-POTW · effective, expires 2028-04-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
8required values missing, on 4 form(s)
35of 77 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (88)

OutfallParameterStatisticLimitMonths
002Temperature, air [degrees Fahrenheit]DAILY MX report only all year
002Temperature, air [degrees Fahrenheit]DAILY MX report only all year
002Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
002pHDAILY MN >= 6 SU all year
002pHDAILY MX <= 9 SU all year
002Solids, total suspendedDAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY MX <= 4.4 mg/L all year
002Sodium, total [as Na]DAILY MX report only all year
002Potassium, total [as K]DAILY MX report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Propylene glycol, totalDAILY MX <= 200 mg/L all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
002Chemical Oxygen Demand [COD]DAILY MX <= 500 mg/L all year
002Chemical Oxygen Demand [COD]DAILY MX <= 154 mg/L all year
002Chemical Oxygen Demand [COD]DAILY MX <= 62 mg/L all year
002Flow, totalMO TOTAL report only all year
003pHDAILY MX report only all year
003Solids, total suspendedDAILY MX report only all year
003Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L all year
003Sodium, total [as Na]DAILY MX report only all year
003Potassium, total [as K]DAILY MX report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Propylene glycol, totalDAILY MX report only all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
003Chemical Oxygen Demand [COD]DAILY MX report only all year
003Flow, totalMO TOTAL report only all year
004Temperature, air [degrees Fahrenheit]DAILY MX report only all year
004Temperature, air [degrees Fahrenheit]DAILY MX report only all year
004Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 9 SU all year
004Solids, total suspendedDAILY MX report only all year
004Nitrogen, ammonia total [as N]DAILY MX <= 4.4 mg/L all year
004Sodium, total [as Na]DAILY MX report only all year
004Potassium, total [as K]DAILY MX report only all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantDAILY MX report only all year
004Propylene glycol, totalDAILY MX <= 200 mg/L all year
004BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
004BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
004BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
004Chemical Oxygen Demand [COD]DAILY MX <= 500 mg/L all year
004Chemical Oxygen Demand [COD]DAILY MX <= 154 mg/L all year
004Chemical Oxygen Demand [COD]DAILY MX <= 62 mg/L all year
004Flow, totalMO TOTAL report only all year
005pHDAILY MX report only all year
005Solids, total suspendedDAILY MX report only all year
005Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L all year
005Sodium, total [as Na]DAILY MX report only all year
005Potassium, total [as K]DAILY MX report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
005Propylene glycol, totalDAILY MX report only all year
005BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
005Chemical Oxygen Demand [COD]DAILY MX report only all year
005Flow, totalMO TOTAL report only all year
006pHDAILY MX report only all year
006pHDAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
006Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L all year
006Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L all year
006Sodium, total [as Na]DAILY MX report only all year
006Sodium, total [as Na]DAILY MX report only all year
006Potassium, total [as K]DAILY MX report only all year
006Potassium, total [as K]DAILY MX report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Flow, in conduit or thru treatment plantDAILY MX report only all year
006Propylene glycol, totalDAILY MX report only all year
006Propylene glycol, totalDAILY MX report only all year
006BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
006BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
006Chemical Oxygen Demand [COD]DAILY MX report only all year
006Chemical Oxygen Demand [COD]DAILY MX report only all year
006Flow, totalMO TOTAL report only all year
006Flow, totalMO TOTAL report only all year
007pHDAILY MX report only all year
007Solids, total suspendedDAILY MX report only all year
007Nitrogen, ammonia total [as N]DAILY MX <= 14.7 mg/L all year
007Sodium, total [as Na]DAILY MX report only all year
007Potassium, total [as K]DAILY MX report only all year
007Flow, in conduit or thru treatment plantDAILY MX report only all year
007Propylene glycol, totalDAILY MX report only all year
007BOD, carbonaceous [5 day, 20 C]DAILY MX report only all year
007Chemical Oxygen Demand [COD]DAILY MX report only all year
007Flow, totalMO TOTAL report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states