Clean Water Act discharge permit · NPDES MOG641032
BIG ISLAND SEWER COMPANY WWTP, Roach, MO: NPDES MOG641032 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 7Pollutants under a numeric limit
- 3Pollutants with an effluent exceedance
BIG ISLAND SEWER COMPANY WWTP, held by Big Island Water Company, holds NPDES permit MOG641032, which discharges to Tributary To Lake Of The Ozarks. EPA’s file records it issued May 1, 2025 and expiring August 7, 2028. 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 | BIG ISLAND SEWER COMPANY WWTP |
|---|---|
| Permittee as filed | Big Island Water Company |
| NPDES ID | MOG641032 |
| Permit status | Effective |
| Permit type | Coverage under a general permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | May 1, 2025 |
| Expiration date | August 7, 2028 |
| Address | Roach, MO 65787 |
| Receiving water | Tributary to Lake of the Ozarks |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Eadsons Spring-Lake of the Ozarks (HUC 102901100308) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 7Pollutants on file
- 7Under a numeric limit
- 7With 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 |
|---|---|---|---|---|---|
| Copper, total recoverable | 2 | 10 | 8 | March 31, 2023 | 45,355% over the limit |
| Lead, total recoverable | 2 | 8 | 6 | March 31, 2019 | 103,900% over the limit |
| Chloride | 2 | 3 | 1 | June 30, 2020 | 90% over the limit |
| pH | 2 | 2 | 0 | ||
| Solids, settleable | 2 | 2 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 2 | 0 | ||
| Chlorides + Sulfates | 2 | 2 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| February 27, 2025 | Permit Violations - Failure to Submit Timely Permit Renewal Application | 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 MOG641032 there.
Nearby on the register
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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.