AHLSTROM NONWOVENS LLC

NPDES permit CT0000434 · Major NON-POTW · effective, expires 2029-01-31 · 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

1values over a limit
11required values missing, on 1 form(s)
10of 91 forms filed late

Last period with anything received: 2026-07-31. Most often over: LC50 Static 48Hr Acute Pimephales promelas (1).

Reporting

Reports are due about 31 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (120)

OutfallParameterStatisticLimitMonths
008Temperature, water deg. fahrenheitINST MAX <= 110 deg F Apr, May, Jun, Jul, Sep, Oct, Nov
008Temperature, water deg. fahrenheitINST MAX <= 95 deg F Jan, Feb, Mar, Dec
008Temperature, water deg. fahrenheitINST MAX <= 115 deg F Aug
008Flow rateMO AVG <= 6 MGD all year
008Oxygen, dissolved [DO]MO AV MN >= 5 mg/L all year
008BOD, 5-day, 20 deg. CMO AVG report only all year
008BOD, 5-day, 20 deg. CDAILY MX report only all year
008Solids, total suspendedMO AVG report only all year
008Solids, total suspendedDAILY MX report only all year
008Nitrogen, total [as N]DAILY MX report only Mar, Jun, Sep, Dec
008Nitrogen, ammonia total [as N]DAILY MX report only Mar, Jun, Sep, Dec
008Nitrogen, nitrite total [as N]DAILY MX report only Mar, Jun, Sep, Dec
008Nitrogen, nitrate total [as N]DAILY MX report only Mar, Jun, Sep, Dec
008Phosphorus, total [as P]DAILY MX report only Mar, Jun, Sep, Dec
008Copper, total [as Cu]DAILY MX report only all year
008Iron, total [as Fe]DAILY MX report only all year
008Lead, total [as Pb]DAILY MX report only all year
008Manganese, total [as Mn]INST MAX report only Jun, Dec
008Nickel, total [as Ni]DAILY MX report only all year
008Zinc, total [as Zn]DAILY MX report only all year
008Aluminum, total [as Al]DAILY MX report only all year
008Surfactants [MBAS]MO AVG report only all year
008Surfactants [MBAS]DAILY MX report only all year
008Flow, maximum during 24 hr periodDAILY MX <= 9 MGD all year
008Chlorine, total residualMO AVG report only all year
008Chlorine, total residualDAILY MX report only all year
008pH, maximumINST MAX <= 9 SU all year
008pH, minimumINST MIN >= 6 SU all year
008Bromine, reported as the elementDAILY MX report only Mar, Jun, Sep, Dec
008FlowDAILY MX <= 9 MGD all year
008EpichlorohydrinDAILY MX report only all year
008LC50 Static 48Hr Acute D. PulexINST MIN report only Jan, Feb, Apr, May, Jul, Aug, Oct, Nov
008LC50 Static 48Hr Acute D. PulexINST MIN >= 42 % Mar, Jun, Sep, Dec
008LC50 Static 48Hr Acute Pimephales promelasINST MIN report only Jan, Feb, Apr, May, Jul, Aug, Oct, Nov
008LC50 Static 48Hr Acute Pimephales promelasINST MIN >= 42 % Mar, Jun, Sep, Dec
008NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaINST MIN report only Jun, Dec
008NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaINST MIN report only Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Oct, Nov
008NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasINST MIN report only Jun, Dec
008NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasINST MIN report only Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Oct, Nov
008NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaINST MIN report only Jun, Dec
008NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaINST MIN report only Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Oct, Nov
008NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasINST MIN report only Jun, Dec
008NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasINST MIN report only Jan, Feb, Mar, Apr, May, Jul, Aug, Sep, Oct, Nov
013pHINST MIN report only Jun
013pHINST MAX report only Jun
013Chlorine, total residualINST MAX report only Jun
013FlowDAILY MX report only Jun
014pHINST MIN report only Jun
014pHINST MAX report only Jun
014Chlorine, total residualINST MAX report only Jun
014FlowDAILY MX report only Jun
015pHINST MIN report only Jun
015pHINST MAX report only Jun
015Chlorine, total residualINST MAX report only Jun
015FlowDAILY MX report only Jun
08ATemperature, water deg. fahrenheitINST MAX report only all year
08AFlow rateDAILY MX report only all year
08AFlow rateMO AVG <= 1.472 MGD all year
08ApHINST MIN report only all year
08ApHINST MAX report only all year
08AZinc, total [as Zn]DAILY MX report only all year
08AAluminum, total [as Al]DAILY MX report only Jun, Dec
08AFlow, maximum during 24 hr periodDAILY MX report only all year
08AFlow, maximum during 24 hr periodDAILY MX <= 3.509 MGD all year
08AChlorine, total residualDAILY MX report only all year
08AFlowDAILY MX report only all year
08BTemperature, water deg. fahrenheitINST MAX report only all year
08BFlow rateMO AVG report only all year
08BpHINST MIN report only all year
08BpHINST MAX report only all year
08BZinc, total [as Zn]DAILY MX report only all year
08BAluminum, total [as Al]DAILY MX report only Jun, Dec
08BFlow, maximum during 24 hr periodDAILY MX report only all year
08BChlorine, total residualDAILY MX report only all year
08BFlowDAILY MX report only all year
08CTemperature, water deg. fahrenheitINST MAX report only all year
08CFlow rateMO AVG report only all year
08CpHINST MIN report only all year
08CpHINST MAX report only all year
08CZinc, total [as Zn]DAILY MX report only all year
08CAluminum, total [as Al]DAILY MX report only Jun, Dec
08CFlow, maximum during 24 hr periodDAILY MX report only all year
08CFlowDAILY MX report only all year
08CNOAEL Static 48Hr Acute D. pulexINST MIN >= 90 % all year
08CNOAEL Static 48Hr Acute Pimephales promelasINST MIN >= 90 % all year
08DTemperature, water deg. fahrenheitINST MAX report only all year
08DFlow rateMO AVG report only all year
08DpHINST MIN report only all year
08DpHINST MAX report only all year
08DSolids, total suspendedDAILY MX report only Jun, Dec
08DIron, total [as Fe]DAILY MX report only Jun, Dec
08DAluminum, total [as Al]DAILY MX report only Jun, Dec
08DFlow, maximum during 24 hr periodDAILY MX report only all year
08DFlowDAILY MX report only all year
08ETemperature, water deg. fahrenheitINST MAX report only all year
08EFlow rateDAILY MX report only all year
08EpHINST MIN report only all year
08EpHINST MAX report only all year
08ESolids, total suspendedDAILY MX report only Mar, Jun, Sep, Dec
08EIron, total [as Fe]DAILY MX report only Mar, Jun, Sep, Dec
08EAluminum, total [as Al]DAILY MX report only Jun, Dec
08EFlow, maximum during 24 hr periodDAILY MX report only all year
08EFlowDAILY MX report only all year
08FFlow rateMO AVG <= 4.5258 MGD all year
08FSolids, total suspendedMO AVG <= 28 mg/L all year
08FSolids, total suspendedDAILY MX <= 60.9 mg/L all year
08FSolids, total suspendedMO AVG <= 429.8 kg/d all year
08FSolids, total suspendedDAILY MX <= 933.7 kg/d all year
08FOil & GreaseMO AVG <= 2 mg/L all year
08FOil & GreaseDAILY MX <= 3.3 mg/L all year
08FCopper, total [as Cu]DAILY MX report only all year
08FAluminum, total [as Al]DAILY MX report only all year
08FPentachlorophenolDAILY MX <= .008 mg/L all year
08FFlow, maximum during 24 hr periodDAILY MX <= 5.76 MGD all year
08FChlorine, total residualDAILY MX report only Mar, Jun, Sep, Dec
08FpH, maximumINST MAX <= 9 SU all year
08FpH, minimumINST MIN >= 5 SU all year
08FFlowDAILY MX <= 5.76 MGD all year
08FEpichlorohydrinDAILY MX report only all year
08FTrichlorophenolDAILY MX <= .006 mg/L 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