Clean Water Act discharge permit · NPDES MO0093513
HANNIBAL WWTP, Hannibal, MO: NPDES MO0093513 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MajorDischarger class
- 0Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
HANNIBAL WWTP, held by Hannibal Board of Public Works, holds NPDES permit MO0093513, which discharges to Mississippi River. EPA’s file records it issued April 18, 2018 and expiring April 30, 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 | HANNIBAL WWTP |
|---|---|
| Permittee as filed | Hannibal Board of Public Works |
| NPDES ID | MO0093513 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 18, 2018 |
| Expiration date | April 30, 2023 |
| Address | Hannibal, MO 63401 |
| Receiving water | Mississippi River |
| Subwatershed | Bear Creek (HUC 071100040501) |
| Program components on file | Biosolids, POTW, Pretreatment |
| 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
- 22Pollutants on file
- 0Under a numeric limit
- 22With a violation of any kind
- 7With 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, 5-day, 20 deg. C | 0 | 100 | 8 | March 31, 2019 | 42% over the limit |
| Solids, total suspended | 0 | 97 | 5 | March 31, 2018 | 64% over the limit |
| BOD, 5-day, percent removal | 0 | 5 | 5 | June 30, 2019 | 58% over the limit |
| Solids, suspended percent removal | 0 | 2 | 2 | April 30, 2019 | 39% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 78 | 1 | October 31, 2005 | 454% over the limit |
| pH | 0 | 39 | 1 | August 31, 2011 | |
| E. coli | 0 | 1 | 1 | September 30, 2019 | 284% over the limit |
| Oil and grease [soxhlet extr.] tot. | 0 | 96 | 0 | ||
| Chlorine, total residual | 0 | 24 | 0 | ||
| Nitrogen, ammonia total [as N] | 0 | 14 | 0 | ||
| Flow, in conduit or thru treatment plant | 0 | 12 | 0 | ||
| E. coli, colony forming units [CFU] | 0 | 6 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 6 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 6 | 0 | ||
| Hardness, total [as CaCO3] | 0 | 4 | 0 | ||
| Zinc, total recoverable | 0 | 4 | 0 | ||
| Lead, total recoverable | 0 | 4 | 0 | ||
| Copper, total recoverable | 0 | 4 | 0 | ||
| Phenols | 0 | 4 | 0 | ||
| Coliform, fecal, colony forming units | 0 | 2 | 0 | ||
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 0 | 2 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 8, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| November 14, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| November 14, 2019 | Permit Violations - Violation Specified in Comment | 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
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, MO0093513.
Start the watch
- One permit holder — $99/month
- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 MO0093513 there.
Nearby on the register
- Discharge permits in Hannibal
- Every permit record in Hannibal, A to Z
- Discharge permits in Missouri
- Every permit record in Missouri, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.