AHLSTROM FILTRATION LLC

NPDES permit PA0008486 · Minor NON-POTW · administratively continued, expires 2026-06-30 · 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.

This permit expired on 2026-06-30 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 22 forms filed late

Last period with anything received: 2026-06-30.

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 (49)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only Dec
001Temperature, water deg. fahrenheitMO AVG report only Jul
001Temperature, water deg. fahrenheitMO AVG report only Jan, Feb, Mar, Apr, May, Jun, Aug, Sep, Oct, Nov
001Temperature, water deg. fahrenheitDAILY MX <= 106 deg F Dec
001Temperature, water deg. fahrenheitDAILY MX <= 96.7 deg F Jul
001Temperature, water deg. fahrenheitDAILY MX <= 110 deg F Jan, Feb, Mar, Apr, May, Jun, Aug, Sep, Oct, Nov
001Oxygen, dissolved [DO]DAILY MN >= 5 mg/L all year
001pHINST MIN >= 6 SU all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 60 mg/L all year
001Solids, total suspendedMO AVG <= 142 lb/d all year
001Solids, total suspendedDAILY MX <= 284 lb/d all year
001Phosphorus, total [as P]MO AVG <= 2 mg/L all year
001Phosphorus, total [as P]DAILY MX <= 4 mg/L all year
001Phosphorus, total [as P]MO AVG <= 9.5 lb/d all year
001Phosphorus, total [as P]DAILY MX <= 19 lb/d all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]MO AVG report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Aluminum, total [as Al]MO AVG report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 18 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 36 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 85 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 170 lb/d all year
002Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
002pHDAILY MX report only all year
002Solids, total suspendedDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
003pHDAILY MX report only all year
003Solids, total suspendedDAILY MX report only all year
005Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
005pHDAILY MX report only all year
005Solids, total suspendedDAILY MX report only all year
006Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
006pHDAILY MX report only all year
006Solids, total suspendedDAILY MX report only all year
007Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
007pHDAILY MX report only all year
007Solids, total suspendedDAILY MX report only all year
008Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
008pHDAILY MX report only all year
008Solids, total suspendedDAILY MX 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