WE ENERGIES OAK CREEK POWER PL

NPDES permit WI0000914 · Major NON-POTW · expired, expires 2024-09-30 · 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 2024-09-30 and is expired: 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

1values over a limit
33required values missing, on 14 form(s)
0of 245 forms filed late

Last period with anything received: 2026-06-30. Most often over: Solids, total suspended (1).

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among WI permits in EPA's filings — check your permit).

Limits in force (136)

OutfallParameterStatisticLimitMonths
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO MAX report only all year
003pHDAILY MN >= 6 SU all year
003pHDAILY MX <= 9 SU all year
003Phosphorus, total [as P]MO AVG <= .2 mg/L all year
003Flow, in conduit or thru treatment plantMO AVG report only all year
003Flow, in conduit or thru treatment plantMO MAX report only all year
003Mercury, total recoverableQB report only all year
003Heat [summer] [per hour]MO AVG report only all year
003Heat [summer] [per hour]MO MAX report only all year
004pHDAILY MN >= 6 SU all year
004pHDAILY MX <= 9 SU all year
004Phosphorus, total [as P]MO AVG <= .2 mg/L all year
004Flow, in conduit or thru treatment plantMO AVG report only all year
004Flow, in conduit or thru treatment plantMO MAX report only all year
004Mercury, total recoverableQB report only all year
004Heat [summer] [per hour]MO AVG report only all year
004Heat [summer] [per hour]MO MAX report only all year
005pHDAILY MN >= 6 SU all year
005pHDAILY MX <= 9 SU all year
005Phosphorus, total [as P]MO AVG <= .2 mg/L all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantMO MAX report only all year
005Mercury, total recoverableQB report only all year
005Heat [summer] [per hour]MO AVG report only all year
005Heat [summer] [per hour]MO MAX report only all year
006pHDAILY MN >= 6 SU all year
006pHDAILY MX <= 9 SU all year
006Phosphorus, total [as P]MO AVG <= .2 mg/L all year
006Flow, in conduit or thru treatment plantMO AVG report only all year
006Flow, in conduit or thru treatment plantMO MAX report only all year
006Mercury, total recoverableQB report only all year
006Heat [summer] [per hour]MO AVG report only all year
006Heat [summer] [per hour]MO MAX report only all year
007pHDAILY MN >= 6 SU all year
007pHDAILY MX <= 9 SU all year
007Solids, total suspendedMO AVG <= 30 mg/L all year
007Solids, total suspendedDAILY MX <= 100 mg/L all year
007Solids, total suspendedMO AVG report only all year
007Solids, total suspendedMO MAX report only all year
007Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
007Oil and grease, hexane extr methodDAILY MX <= 20 mg/L all year
007Oil and grease, hexane extr methodMO AVG report only all year
007Oil and grease, hexane extr methodMO MAX report only all year
007Phosphorus, total [as P]MO AVG <= .4 mg/L all year
007Arsenic, total recoverableDAILY MX <= 1.2 ug/L all year
007Flow, in conduit or thru treatment plantMO AVG report only all year
007Flow, in conduit or thru treatment plantMO MAX report only all year
007Mercury, total recoverableDAILY MX <= 3.7 ng/L all year
008Flow, in conduit or thru treatment plantMO AVG report only all year
008Flow, in conduit or thru treatment plantMO MAX report only all year
010Flow, in conduit or thru treatment plantMO AVG report only all year
010Flow, in conduit or thru treatment plantMO MAX report only all year
012Flow, in conduit or thru treatment plantMO AVG report only all year
012Flow, in conduit or thru treatment plantMO MAX report only all year
013Chlorine, total residual [dsg. time]DAILY MX <= 120 min/d all year
013pHDAILY MN >= 6 SU all year
013pHDAILY MX <= 9 SU all year
013Phosphorus, total [as P]MO AVG <= .2 mg/L all year
013Arsenic, total recoverableMO MAX report only all year
013Flow, in conduit or thru treatment plantMO AVG report only all year
013Flow, in conduit or thru treatment plantMO MAX report only all year
013Chlorine, total residualDAILY MX <= 200 ug/L all year
013Heat [summer] [per hour]MO AVG report only all year
013Heat [summer] [per hour]MO MAX report only all year
014Flow, in conduit or thru treatment plantMO AVG report only all year
014Flow, in conduit or thru treatment plantMO MAX report only all year
015Flow, in conduit or thru treatment plantMO AVG report only all year
015Flow, in conduit or thru treatment plantMO MAX report only all year
105Solids, total suspendedMO AVG report only all year
105Solids, total suspendedMO MAX report only all year
105Flow, in conduit or thru treatment plantMO AVG report only all year
105Flow, in conduit or thru treatment plantMO MAX report only all year
106Solids, total suspendedMO AVG report only all year
106Solids, total suspendedMO MAX report only all year
106Flow, in conduit or thru treatment plantMO AVG report only all year
106Flow, in conduit or thru treatment plantMO MAX report only all year
107Solids, total suspendedMO AVG <= 30 mg/L all year
107Solids, total suspendedDAILY MX <= 100 mg/L all year
107Solids, total suspendedMO AVG report only all year
107Solids, total suspendedMO MAX report only all year
107Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
107Oil and grease, hexane extr methodDAILY MX <= 20 mg/L all year
107Oil and grease, hexane extr methodMO AVG report only all year
107Oil and grease, hexane extr methodMO MAX report only all year
107Nitrite + Nitrate total [as N]MO AVG <= 3 mg/L all year
107Nitrite + Nitrate total [as N]DAILY MX <= 4 mg/L all year
107Arsenic, total recoverableMO AVG <= 8 ug/L all year
107Arsenic, total recoverableDAILY MX <= 18 ug/L all year
107Selenium, total recoverableMO AVG <= 29 ug/L all year
107Selenium, total recoverableDAILY MX <= 70 ug/L all year
107Flow, in conduit or thru treatment plantMO AVG report only all year
107Flow, in conduit or thru treatment plantMO MAX report only all year
107Mercury, total recoverableMO AVG <= .034 ug/L all year
107Mercury, total recoverableDAILY MX <= .103 ug/L all year
108Solids, total suspendedMO AVG <= 30 mg/L all year
108Solids, total suspendedDAILY MX <= 100 mg/L all year
108Solids, total suspendedMO AVG report only all year
108Solids, total suspendedMO MAX report only all year
108Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
108Oil and grease, hexane extr methodDAILY MX <= 20 mg/L all year
108Oil and grease, hexane extr methodMO AVG report only all year
108Oil and grease, hexane extr methodMO MAX report only all year
108Flow, in conduit or thru treatment plantMO AVG report only all year
108Flow, in conduit or thru treatment plantMO MAX report only all year
108Mercury, total recoverableQB report only all year
109Solids, total suspendedMO AVG <= 30 mg/L all year
109Solids, total suspendedDAILY MX <= 100 mg/L all year
109Solids, total suspendedMO AVG report only all year
109Solids, total suspendedMO MAX report only all year
109Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
109Oil and grease, hexane extr methodDAILY MX <= 20 mg/L all year
109Oil and grease, hexane extr methodANNL AVG report only all year
109Oil and grease, hexane extr methodANNL MAX report only all year
109Flow, in conduit or thru treatment plantMO AVG report only all year
109Flow, in conduit or thru treatment plantMO MAX report only all year
110Solids, total suspendedMO AVG <= 30 mg/L all year
110Solids, total suspendedDAILY MX <= 100 mg/L all year
110Solids, total suspendedMO AVG report only all year
110Solids, total suspendedMO MAX report only all year
110Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
110Oil and grease, hexane extr methodDAILY MX <= 20 mg/L all year
110Oil and grease, hexane extr methodMO AVG report only all year
110Oil and grease, hexane extr methodMO MAX report only all year
110Arsenic, total recoverableMO MAX report only all year
110Flow, in conduit or thru treatment plantMO AVG report only all year
110Flow, in conduit or thru treatment plantMO MAX report only all year
110Mercury, total recoverableMO MAX report only all year
171Flow, in conduit or thru treatment plantMO AVG report only all year
171Flow, in conduit or thru treatment plantMO MAX report only all year
901Flow, in conduit or thru treatment plantMO AVG report only all year
901Flow, in conduit or thru treatment plantMO MAX report only all year
902Flow, in conduit or thru treatment plantMO AVG report only all year
902Flow, in conduit or thru treatment plantMO MAX report only all year
907Oil and grease, hexane extr methodMO AVG <= 675 lb/d all year
907Oil and grease, hexane extr methodDAILY MX <= 1441 lb/d 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