Clean Water Act discharge permit · NPDES WI0028819
SOUTH MILWAUKEE WASTEWATER TREAT FACILITY, South Milwaukee, WI: NPDES WI0028819 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 5Pollutants with an effluent exceedance
SOUTH MILWAUKEE WASTEWATER TREAT FACILITY, held by SOUTH MILWAUKEE WASTEWATER TRE, holds NPDES permit WI0028819, which discharges to L Michigan. EPA’s file records it issued December 28, 2010 and expiring December 31, 2015. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOUTH MILWAUKEE WASTEWATER TREAT FACILITY |
|---|---|
| Permittee as filed | SOUTH MILWAUKEE WASTEWATER TRE |
| NPDES ID | WI0028819 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | December 28, 2010 |
| Expiration date | December 31, 2015 |
| Address | South Milwaukee, WI 53172 |
| Receiving water | L MICHIGAN |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 16Pollutants on file
- 15Under a numeric limit
- 15With a violation of any kind
- 5With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Coliform, fecal general | 1 | 86 | 15 | February 28, 2019 | 1,533% over the limit |
| Solids, total suspended | 5 | 50 | 11 | December 31, 2025 | 178% over the limit |
| Phosphorus, total [as P] | 2 | 19 | 7 | April 30, 2022 | 45% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 42 | 3 | April 30, 2013 | 36% over the limit |
| pH | 2 | 19 | 1 | January 31, 1999 | |
| Mercury, total recoverable | 2 | 176 | 0 | ||
| Arsenic, total recoverable | 0 | 83 | 0 | ||
| Nickel, total recoverable | 2 | 24 | 0 | ||
| Zinc, total recoverable | 2 | 24 | 0 | ||
| Cadmium, total recoverable | 2 | 24 | 0 | ||
| Lead, total recoverable | 2 | 24 | 0 | ||
| Chromium, total recoverable | 2 | 24 | 0 | ||
| Copper, total recoverable | 2 | 22 | 0 | ||
| Nitrogen, ammonia total [as N] | 2 | 18 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 18 | 0 | ||
| Temperature, water deg. fahrenheit | 4 | 0 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 16Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 10, 2025 | WW SSO - Discharge to Waters | ST6 |
| March 2, 2025 | WW SSO - Discharge to Waters | ST6 |
| April 11, 2024 | WW SSO - Discharge to Waters | ST6 |
| February 27, 2023 | WW SSO - Discharge to Waters | ST6 |
| September 12, 2022 | WW SSO - Discharge to Waters | ST6 |
| September 11, 2022 | WW SSO - Discharge to Waters | ST6 |
| July 28, 2022 | Monitoring Violations - Analysis not Conducted | ST6 |
| March 23, 2021 | WW SSO - Discharge to Waters | ST6 |
| August 2, 2020 | WW SSO - Discharge to Waters | ST6 |
| May 17, 2020 | WW SSO - Discharge to Waters | ST6 |
| April 30, 2020 | WW SSO - Discharge to Waters | ST6 |
| February 6, 2020 | WW SSO - Discharge to Waters | ST6 |
| October 2, 2019 | WW SSO - Discharge to Waters | ST6 |
| September 13, 2019 | WW SSO - Discharge to Waters | ST6 |
| May 13, 2018 | WW SSO - Discharge to Waters | ST6 |
| January 21, 2017 | Reporting Violations - Failure to Submit DMRs | ST6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID WI0028819 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.