Clean Water Act discharge permit · NPDES MOG970052
HYPONEX CORPORATION, Wright City, MO: NPDES MOG970052 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 5Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
HYPONEX CORPORATION, held by Hyponex Corporation, holds NPDES permit MOG970052, which discharges to Tributary To Indian Camp Creek. EPA’s file records it issued August 28, 2018 and expiring August 6, 2023. 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 | HYPONEX CORPORATION |
|---|---|
| Permittee as filed | Hyponex Corporation |
| NPDES ID | MOG970052 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Industrial stormwater |
| Issued | August 28, 2018 |
| Expiration date | August 6, 2023 |
| Address | Wright City, MO 63390 |
| Receiving water | Tributary to Indian Camp Creek |
| Subwatershed | Indian Camp Creek (HUC 071100080407) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 10Pollutants on file
- 5Under a numeric limit
- 10With a violation of any kind
- 1With 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 | 6 | 100 | 24 | March 31, 2026 | 2,100% over the limit |
| Rainfall | 6 | 140 | 0 | ||
| BOD, 5-day, 20 deg. C | 6 | 78 | 0 | ||
| pH | 6 | 62 | 0 | ||
| Flow, in conduit or thru treatment plant | 6 | 58 | 0 | ||
| Nitrogen, total [as N] | 0 | 6 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 6 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 6 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 6 | 0 | ||
| Phosphorus, total [as P] | 0 | 6 | 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
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 7, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| April 4, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| December 26, 2024 | Effluent Violations - Numeric effluent violation | ST6 |
| April 4, 2023 | Effluent Violations - Numeric effluent violation | ST6 |
| January 20, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| January 20, 2023 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 15, 2021 | Effluent Violations - Numeric effluent violation | ST6 |
| March 30, 2021 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| March 30, 2021 | 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 MOG970052 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.