Wacker Polysilicon North America, LLC

NPDES permit TN0081311 · Minor NON-POTW · effective, expires 2027-03-31 · 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

0values over a limit
0required values missing, on 0 form(s)
0of 62 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (38)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001pHDAILY MX <= 9 SU all year
001Solids, total suspendedDAILY 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
001Solids, total dissolvedDAILY MX <= 117588 lb/d all year
001LC50 Static 48Hr Acute Ceriodaphnia dubiaMINIMUM >= 1.7 % mortality all year
001LC50 Static 48Hr Acute Pimephales promelasMINIMUM >= 1.7 % mortality all year
IMP1pHDAILY MN >= 6 SU all year
IMP1pHDAILY MX <= 9 SU all year
IMP1Flow, in conduit or thru treatment plantTOTAL report only all year
IMP1Oil and grease visualVALUE report only all year
IMP2pHDAILY MN >= 6 SU all year
IMP2pHDAILY MX <= 9 SU all year
IMP2Flow, in conduit or thru treatment plantTOTAL report only all year
IMP2Oil and grease visualVALUE report only all year
IMP3pHDAILY MN >= 6 SU all year
IMP3pHDAILY MX <= 9 SU all year
IMP3Flow, in conduit or thru treatment plantTOTAL report only all year
IMP3Oil and grease visualVALUE report only all year
IMP4pHDAILY MN >= 6 SU all year
IMP4pHDAILY MX <= 9 SU all year
IMP4Flow, in conduit or thru treatment plantTOTAL report only all year
IMP4Oil and grease visualVALUE report only all year
SW1Nitrogen, ammonia total [as N]DAILY MX <= 4 mg/L (alert) all year
SW1Nitrite + Nitrate total [as N]DAILY MX <= .68 mg/L (alert) all year
SW1Magnesium, total [as Mg]DAILY MX <= .064 mg/L (alert) all year
SW1Copper, total [as Cu]DAILY MX <= .018 mg/L (alert) all year
SW1Iron, total [as Fe]DAILY MX <= 5 mg/L (alert) all year
SW1Aluminum, total [as Al]DAILY MX <= .75 mg/L (alert) all year
SW1Flow, in conduit or thru treatment plantDAILY MX report only (alert) all year
SW4Nitrogen, ammonia total [as N]DAILY MX <= 4 mg/L (alert) all year
SW4Nitrite + Nitrate total [as N]DAILY MX <= .68 mg/L (alert) all year
SW4Magnesium, total [as Mg]DAILY MX <= .064 mg/L (alert) all year
SW4Copper, total [as Cu]DAILY MX <= .018 mg/L (alert) all year
SW4Iron, total [as Fe]DAILY MX <= 5 mg/L (alert) all year
SW4Aluminum, total [as Al]DAILY MX <= .75 mg/L (alert) all year
SW4Flow, in conduit or thru treatment plantDAILY MX report only (alert) 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