Clean Water Act discharge permit · NPDES MN0023094
COLD SPRING WWTP, Cold Spring, MN: NPDES MN0023094 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 26Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
COLD SPRING WWTP, held by Cold Spring city of, holds NPDES permit MN0023094. EPA’s file records it issued March 1, 2018 and expiring January 31, 2023. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | COLD SPRING WWTP |
|---|---|
| Permittee as filed | Cold Spring city of |
| NPDES ID | MN0023094 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 1, 2018 |
| Expiration date | January 31, 2023 |
| Issuing agency | STA |
| Address | Cold Spring, MN 56320 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Cedar Island Lake-Sauk River (HUC 070102020604) |
| SIC | 4952 – Sewerage Systems |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.
Effluent limits and exceedances
- 26Pollutants on file
- 26Under a numeric limit
- 5With 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 |
|---|---|---|---|---|---|
| BOD, carbonaceous [5 day, 20 C] | 11 | 7 | 2 | March 31, 2019 | 40% over the limit |
| Phosphorus, total [as P] | 5 | 1 | 1 | March 31, 2011 | 32% over the limit |
| Coliform, fecal MPN + membrane ftl 44.5 C | 1 | 1 | 1 | September 30, 2017 | 3% over the limit |
| BOD, carb-5 day, 20 deg C, percent removal | 1 | 49 | 0 | ||
| Solids, total suspended | 12 | 5 | 0 | ||
| Nitrogen, ammonia total [as N] | 8 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 0 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Nitrogen, total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 2 | 0 | 0 | ||
| Specific conductance | 1 | 0 | 0 | ||
| Precipitation, total defined period/in | 1 | 0 | 0 | ||
| Bicarbonate ion- [as HCO3] | 1 | 0 | 0 | ||
| Calcium, total [as Ca] | 1 | 0 | 0 | ||
| Magnesium, total [as Mg] | 1 | 0 | 0 | ||
| Sodium, total [as Na] | 1 | 0 | 0 | ||
| Potassium, total [as K] | 1 | 0 | 0 | ||
| Chloride [as Cl] | 1 | 0 | 0 | ||
| Sulfate, total [as SO4] | 1 | 0 | 0 | ||
| Hardness, Ca Mg Calculated [mg/L as CaCO3] | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 | ||
| Mercury, dissolved [as Hg] | 1 | 0 | 0 | ||
| Mercury, total [as Hg] | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 23, 2020 | Biosolids - Land Application: Applied to Land at Greater than the Agronomic Rate Violation | ST6 |
| January 23, 2020 | Biosolids - Land Application: Invalid Monitoring or Unrepresentative Sample Violation | 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.
Watch this permit
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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 MN0023094 there.
Nearby on the register
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- Every permit record in Cold Spring, A to Z
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- Every permit record in Minnesota, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.