Clean Water Act discharge permit · NPDES MO0103748
ROCKVILLE WWTP, Rockville, MO: NPDES MO0103748 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 8Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
ROCKVILLE WWTP, held by City of Rockville, holds NPDES permit MO0103748, which discharges to Tributary To Jones Lake. EPA’s file records it issued August 16, 2018 and expiring June 30, 2022. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | ROCKVILLE WWTP |
|---|---|
| Permittee as filed | City of Rockville |
| NPDES ID | MO0103748 |
| 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 | August 16, 2018 |
| Expiration date | June 30, 2022 |
| Address | Rockville, MO 64780 |
| Receiving water | Tributary to Jones Lake |
| Subwatershed | Campbell Branch-Osage River (HUC 102901050205) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 8Pollutants on file
- 8Under a numeric limit
- 7With a violation of any kind
- 6With 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 | 88 | 9 | December 31, 2022 | |
| Solids, suspended percent removal | 1 | 5 | 5 | June 30, 2026 | 186% over the limit |
| Solids, total suspended | 2 | 66 | 4 | December 31, 2022 | 395% over the limit |
| BOD, 5-day, percent removal | 1 | 4 | 4 | September 30, 2024 | 186% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 64 | 2 | June 30, 2010 | 384% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 32 | 2 | November 30, 2009 | 55% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 26 | 0 | ||
| Nitrogen, ammonia total [as N] | 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
- 2Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| November 15, 2022 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| October 10, 2018 | Management Practice Violations - Improper Operation and Maintenance | 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 MO0103748 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.