Clean Water Act discharge permit · NPDES MO0089681
INDEPENDENCE ROCK CREEK WWTP, Independence, MO: NPDES MO0089681 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 32Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
INDEPENDENCE ROCK CREEK WWTP, held by City of Independence, holds NPDES permit MO0089681, which discharges to Tributary To Rock Creek. EPA’s file records it issued July 26, 2017 and expiring March 31, 2019. 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 | INDEPENDENCE ROCK CREEK WWTP |
|---|---|
| Permittee as filed | City of Independence |
| NPDES ID | MO0089681 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | July 26, 2017 |
| Expiration date | March 31, 2019 |
| Address | Independence, MO 64053 |
| Receiving water | Tributary to Rock Creek |
| Subwatershed | Rock Creek-Missouri River (HUC 103001010305) |
| Other EPA IDs (FRS) | RCRA handler MOT300010808; ICIS-AIR source MO0000002909500150 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 43Pollutants on file
- 32Under a numeric limit
- 28With a violation of any kind
- 11With 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 | 2 | 74 | 68 | October 31, 2022 | 931% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 226 | 36 | December 31, 2008 | 1,960% over the limit |
| E. coli | 2 | 34 | 34 | October 31, 2013 | 15,632% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 31 | 31 | June 30, 2016 | 241% over the limit |
| pH | 4 | 219 | 25 | March 31, 2016 | |
| BOD, 5-day, 20 deg. C | 2 | 181 | 21 | January 31, 2013 | 840% over the limit |
| Chlorine, total residual | 2 | 8 | 8 | June 30, 2026 | 3,841% over the limit |
| BOD, 5-day, percent removal | 1 | 3 | 3 | March 31, 2022 | 52% over the limit |
| Solids, settleable | 0 | 188 | 2 | May 31, 2005 | 233% over the limit |
| Arsenic, total recoverable | 2 | 152 | 2 | January 31, 2000 | 25% over the limit |
| Lead, total recoverable | 2 | 153 | 1 | March 31, 2006 | 130% over the limit |
| Oxygen demand, chem. [high level] [COD] | 2 | 154 | 0 | ||
| Zinc, total recoverable | 2 | 153 | 0 | ||
| Silver total recoverable | 2 | 152 | 0 | ||
| Cadmium, total recoverable | 4 | 151 | 0 | ||
| Nickel, total recoverable | 2 | 151 | 0 | ||
| Copper, total recoverable | 4 | 150 | 0 | ||
| Mercury, total recoverable | 2 | 150 | 0 | ||
| Chromium, total recoverable | 0 | 149 | 0 | ||
| Flow, in conduit or thru treatment plant | 4 | 108 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 7 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 6 | 0 | ||
| Sulfate [as S] | 0 | 4 | 0 | ||
| Chloride [as Cl] | 0 | 4 | 0 | ||
| Aluminum, total recoverable | 0 | 4 | 0 | ||
| Molybdenum, total recoverable | 0 | 4 | 0 | ||
| Toxicity characteristic leaching procedure | 0 | 3 | 0 | ||
| Cyanide, free [amenable to chlorination] | 0 | 2 | 0 | ||
| Nitrogen, ammonia total [as N] | 6 | 0 | 0 | ||
| Nitrogen, total [as N] | 4 | 0 | 0 | ||
| Phosphorus, total [as P] | 4 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 4 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 2 | 0 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 2 | 0 | 0 | ||
| Chromium, trivalent total recoverable | 2 | 0 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 1 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 0 | 0 | ||
| Solids, suspended percent removal | 1 | 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
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| August 25, 2020 | Effluent Violations - Numeric effluent violation | 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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.