Clean Water Act discharge permit · NPDES MO0085383
HILLSBORO WWTP, Hillsboro, MO: NPDES MO0085383 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
HILLSBORO WWTP, held by City of Hillsboro, holds NPDES permit MO0085383, which discharges to Belews Creek. EPA’s file records it issued September 17, 2018 and expiring June 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 | HILLSBORO WWTP |
|---|---|
| Permittee as filed | City of Hillsboro |
| NPDES ID | MO0085383 |
| 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 | September 17, 2018 |
| Expiration date | June 30, 2023 |
| Address | Hillsboro, MO 63050 |
| Receiving water | Belews Creek |
| Subwatershed | Belew Creek (HUC 071401040404) |
| Program components on file | Biosolids, POTW |
| 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
- 12Pollutants on file
- 11Under a numeric limit
- 11With 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 |
|---|---|---|---|---|---|
| pH | 2 | 7 | 1 | May 31, 2019 | |
| Oxygen, dissolved [DO] | 0 | 42 | 0 | ||
| BOD, 5-day, 20 deg. C | 2 | 10 | 0 | ||
| Solids, total suspended | 2 | 10 | 0 | ||
| Nitrogen, total [as N] | 2 | 8 | 0 | ||
| Phosphorus, total [as P] | 2 | 8 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 6 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 6 | 0 | ||
| BOD, 5-day, percent removal | 1 | 6 | 0 | ||
| Solids, suspended percent removal | 1 | 6 | 0 | ||
| E. coli | 2 | 4 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 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
- 3Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 9, 2026 | Effluent Violations - Narrative Effluent Violation | ST6 |
| June 1, 2022 | Permit Violations - Violation Specified in Comment | ST6 |
| June 1, 2022 | Reporting Violations - Improper/ Incorrect Reporting | 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, MO0085383.
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 MO0085383 there.
Nearby on the register
- Discharge permits in Hillsboro
- Every permit record in Hillsboro, 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.