Clean Water Act discharge permit · NPDES MO0096318
CARROLLTON WWTP, Carrollton, MO: NPDES MO0096318 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 15Pollutants under a numeric limit
- 10Pollutants with an effluent exceedance
- 0Inspections on file
- 0Formal enforcement actions
CARROLLTON WWTP, held by City of Carrollton, holds NPDES permit MO0096318, which discharges to Wakenda Cr. EPA’s file records it issued October 17, 2018 and expiring September 30, 2023.
CARROLLTON WWTP, Carrollton, Missouri: Individual permit MO0096318, held by City of Carrollton; Publicly owned treatment works; Administratively continued (past its expiration date and still in force until reissued); issued October 17, 2018, term to September 30, 2023; discharges to Wakenda Cr.
- E. coli: 2 limits, 24 violations of any kind, 18 effluent exceedances, latest August 31, 2023, largest 864% over the limit.
- Coliform, fecal general: 0 limits, 70 violations of any kind, 12 effluent exceedances, latest September 30, 2014, largest 20,900% over the limit.
- Ammonia [as N] + unionized ammonia: 0 limits, 18 violations of any kind, 12 effluent exceedances, latest December 31, 2013, largest 74% over the limit.
- BOD, 5-day, percent removal: 1 limit, 5 violations of any kind, 5 effluent exceedances, latest June 30, 2020, largest 65% over the limit.
- Solids, total suspended: 2 limits, 16 violations of any kind, 4 effluent exceedances, latest June 30, 2013, largest 28% over the limit.
- Nitrogen, ammonia total [as N]: 4 limits, 9 violations of any kind, 3 effluent exceedances, latest March 31, 2026, largest 362% over the limit.
- Solids, suspended percent removal: 1 limit, 3 violations of any kind, 3 effluent exceedances, latest December 31, 2022, largest 104% over the limit.
- Oil and grease [soxhlet extr.] tot.: 2 limits, 19 violations of any kind, 1 effluent exceedance, latest June 30, 2012, largest 20% over the limit.
- BOD, 5-day, 20 deg. C: 2 limits, 13 violations of any kind, 1 effluent exceedance, latest August 31, 2022, largest 22% over the limit.
- pH: 2 limits, 11 violations of any kind, 1 effluent exceedance, latest March 31, 2026.
- Oxygen, dissolved [DO]: 0 limits, 68 violations of any kind, 0 effluent exceedances.
- Phosphorus, total [as P]: 4 limits, 36 violations of any kind, 0 effluent exceedances.
- Nitrogen, total [as N]: 4 limits, 34 violations of any kind, 0 effluent exceedances.
- Flow, in conduit or thru treatment plant: 2 limits, 8 violations of any kind, 0 effluent exceedances.
- Nitrogen, Kjeldahl, total [as N]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Nitrite + Nitrate total [as N]: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Pass/Fail Static 48Hr Acute Ceriodaphnia dubia: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- LC50 Static 48Hr Acute Pimephales promelas: 0 limits, 4 violations of any kind, 0 effluent exceedances.
- Toxicity [acute], Ceriodaphnia dubia: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [acute], Pimephales promelas [Fathead Minnow]: 2 limits, 2 violations of any kind, 0 effluent exceedances.
- Toxicity [chronic], Ceriodaphnia dubia: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- Toxicity [chronic], Pimephales promelas [Fathead Minnow]: 1 limit, 0 violations of any kind, 0 effluent exceedances.
- July 30, 2025: Permit Violations - Discharge Without a Valid Permit (ST6).
- July 30, 2025: Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) (ST6).
- July 30, 2025: Permit Violations - Unapproved Operation (ST6).
- July 30, 2025: Effluent Violations - Numeric effluent violation (ST6).
- July 30, 2025: Permit Violations - Failure to Submit Timely Permit Renewal Application (ST6).
- November 14, 2023: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- April 9, 2019: Permit Violations - Violation Specified in Comment (ST6).
- April 9, 2019: Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) (ST6).
- April 9, 2019: WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP (ST6).
Missouri holds 756 Publicly owned treatment works coverages of this permit type in EPA’s file; 456 were issued before MO0096318. City of Carrollton holds 2 permits in Missouri.
Other permits held by City of Carrollton
- CITY OF CARROLLTON, Carrollton: MOL096318, issued January 1, 2021
Coverages issued nearest MO0096318
- October 10, 2018: JCPSD MOCKINGBIRD SUBDIVISION WWTF, Hillsboro, MO0089362, held by Mockingbird Wastewater Corp
- October 10, 2018: JOHNSON CO JAIL AND SHERIFF DEPT WWTP, Centerview, MO0124885, held by Johnson County
- October 10, 2018: CGCRCSD ARBOR TRAILS SUBDIVISION WWTP, Jackson, MO0128279, held by CGCRCSD
- October 17, 2018: AURORA WWTP, Aurora, MO0036757, held by City of Aurora
- October 17, 2018: KNOX CITY WWTF, Knox City, MO0095745, held by Knox City
- October 18, 2018: BILLINGS WWTP, Billings, MO0042480, held by City of Billings
- October 22, 2018: BCRSD ROLLINGWOOD PLAT 1 WWTP, Columbia, MO0038792, held by Boone County Regional Sewer District
- October 22, 2018: BCRSD HIGHFIELD ACRES WWTF, Columbia, MO0053376, held by Boone County Regional Sewer District
- October 22, 2018: BCRSD PRAIRIE MEADOWS WWTP, Columbia, MO0083542, held by Boone County Regional Sewer District
- October 22, 2018: BCRSD ROCHEPORT WWTP, Rocheport, MO0095222, held by Boone County Regional Sewer District
CARROLLTON WWTP among its neighbors
EPA’s permit file holds 6 discharge permits in the Middle Wakenda Creek subwatershed (HUC 103001011009), MO0096318 among them. Its county holds 22, 1 of them major permits; MO0096318 is a major permit.
Other permits in the Middle Wakenda Creek subwatershed (HUC 103001011009)
- CARROLLTON WATER TREATMENT PLANT, Carrollton: MOG640147, minor permit, discharging to Tributary to Brush Creek, permit term to February 24, 2029
- CITY OF CARROLLTON, Carrollton: MOL096318, minor permit, permit term to December 31, 2025
- LONG AUTO SALVAGE, Carrollton: MOR60A325, minor permit, discharging to Tributary to Brush Creek, permit term to December 11, 2023
- MFA OIL BULK PLANT CARROLLTON, Carrollton: MOG350061, minor permit, discharging to Tributary to Wakenda Cr., permit term to September 17, 2022
- PENNY'S CONCRETE, INC. - CARROLLTON, Carrollton: MOG490561, minor permit, discharging to Tributary to Standley Branch, permit term to April 30, 2022
Identity
| Facility as filed | CARROLLTON WWTP |
|---|---|
| Permittee as filed | City of Carrollton |
| NPDES ID | MO0096318 |
| 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 | October 17, 2018 |
| Expiration date | September 30, 2023 |
| Address | Carrollton, MO 64633 |
| Receiving water | Wakenda Cr |
| Subwatershed | Middle Wakenda Creek (HUC 103001011009) |
| Program components on file | Biosolids, POTW |
| SIC | 4952 – Sewerage Systems |
Effluent limits and exceedances
- 22Pollutants on file
- 15Under a numeric limit
- 20With a violation of any kind
- 10With 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 |
|---|---|---|---|---|---|
| E. coli | 2 | 24 | 18 | August 31, 2023 | 864% over the limit |
| Coliform, fecal general | 0 | 70 | 12 | September 30, 2014 | 20,900% over the limit |
| Ammonia [as N] + unionized ammonia | 0 | 18 | 12 | December 31, 2013 | 74% over the limit |
| BOD, 5-day, percent removal | 1 | 5 | 5 | June 30, 2020 | 65% over the limit |
| Solids, total suspended | 2 | 16 | 4 | June 30, 2013 | 28% over the limit |
| Nitrogen, ammonia total [as N] | 4 | 9 | 3 | March 31, 2026 | 362% over the limit |
| Solids, suspended percent removal | 1 | 3 | 3 | December 31, 2022 | 104% over the limit |
| Oil and grease [soxhlet extr.] tot. | 2 | 19 | 1 | June 30, 2012 | 20% over the limit |
| BOD, 5-day, 20 deg. C | 2 | 13 | 1 | August 31, 2022 | 22% over the limit |
| pH | 2 | 11 | 1 | March 31, 2026 | |
| Oxygen, dissolved [DO] | 0 | 68 | 0 | ||
| Phosphorus, total [as P] | 4 | 36 | 0 | ||
| Nitrogen, total [as N] | 4 | 34 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 8 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 4 | 0 | ||
| Pass/Fail Static 48Hr Acute Ceriodaphnia dubia | 0 | 4 | 0 | ||
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 4 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 2 | 2 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 2 | 2 | 0 | ||
| Toxicity [chronic], Ceriodaphnia dubia | 1 | 0 | 0 | ||
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | 1 | 0 | 0 |
Inspections, violations and enforcement
- 9Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| July 30, 2025 | Permit Violations - Discharge Without a Valid Permit | ST6 |
| July 30, 2025 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| July 30, 2025 | Permit Violations - Unapproved Operation | ST6 |
| July 30, 2025 | Effluent Violations - Numeric effluent violation | ST6 |
| July 30, 2025 | Permit Violations - Failure to Submit Timely Permit Renewal Application | ST6 |
| November 14, 2023 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| April 9, 2019 | Permit Violations - Violation Specified in Comment | ST6 |
| April 9, 2019 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| April 9, 2019 | WW Storm Water Construction - Failure to develop any or adequate SWPPP/SWMP | ST6 |
Inspections
EPA’s inspection file holds no inspection for NPDES MO0096318.
Formal enforcement and penalties
0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.
Informal enforcement
EPA’s informal enforcement file holds no action for NPDES MO0096318.
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Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.