Clean Water Act discharge permit · NPDES WI0025640
UNION CENTER WASTEWATER TREATMENT FACILITY, Union Center, WI: NPDES WI0025640 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
UNION CENTER WASTEWATER TREATMENT FACILITY, held by Village of Union Center, holds NPDES permit WI0025640, which discharges to Baraboo R. EPA’s file records it issued May 29, 2012 and expiring March 31, 2017. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | UNION CENTER WASTEWATER TREATMENT FACILITY |
|---|---|
| Permittee as filed | Village of Union Center |
| NPDES ID | WI0025640 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | May 29, 2012 |
| Expiration date | March 31, 2017 |
| Address | Union Center, WI 53962 |
| Receiving water | BARABOO R |
| Subwatershed | City of Elroy-Baraboo River (HUC 070700040108) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 9Pollutants on file
- 8Under a numeric limit
- 9With a violation of any kind
- 3With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 4 | 66 | 18 | May 31, 1994 | 123% over the limit |
| BOD, 5-day, 20 deg. C | 4 | 63 | 15 | January 31, 1994 | 100% over the limit |
| Phosphorus, total [as P] | 1 | 19 | 9 | February 28, 2022 | 165% over the limit |
| Copper, total recoverable | 2 | 72 | 0 | ||
| Coliform, fecal general | 0 | 49 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 36 | 0 | ||
| Zinc, total recoverable | 2 | 25 | 0 | ||
| pH | 2 | 12 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 9 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES WI0025640.
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.
Watch this permit
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, WI0025640.
Start the watch
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- One state — $4,990/year
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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 WI0025640 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.