Clean Water Act discharge permit · NPDES MO0046647
MAWC, GARDEN CITY WWTF, Garden City, MO: NPDES MO0046647 discharge permit, effluent exceedances, inspections, penalties
- EffectivePermit status
- MinorDischarger class
- 10Pollutants under a numeric limit
- 7Pollutants with an effluent exceedance
MAWC, GARDEN CITY WWTF, held by MISSOURI-AMERICAN WATER COMPANY, holds NPDES permit MO0046647, which discharges to Panther Creek. EPA’s file records it issued March 1, 2021 and expiring September 30, 2025. 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 | MAWC, GARDEN CITY WWTF |
|---|---|
| Permittee as filed | MISSOURI-AMERICAN WATER COMPANY |
| NPDES ID | MO0046647 |
| Permit status | Effective |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | March 1, 2021 |
| Expiration date | September 30, 2025 |
| Address | Garden City, MO 64747 |
| Receiving water | Panther Creek |
| Subwatershed | Panther Creek-Big Creek (HUC 102901080402) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 15Pollutants on file
- 10Under a numeric limit
- 15With 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 |
|---|---|---|---|---|---|
| Solids, total suspended | 2 | 39 | 15 | December 31, 2023 | 445% over the limit |
| pH | 2 | 67 | 9 | December 31, 2025 | |
| BOD, 5-day, 20 deg. C | 2 | 33 | 8 | December 31, 2023 | 122% over the limit |
| E. coli | 2 | 27 | 7 | October 31, 2023 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 12 | 21 | 5 | March 31, 2025 | 2,600% over the limit |
| Solids, suspended percent removal | 0 | 2 | 2 | June 30, 2022 | 17% over the limit |
| BOD, 5-day, percent removal | 0 | 1 | 1 | September 30, 2021 | 65% over the limit |
| Flow, in conduit or thru treatment plant | 2 | 24 | 0 | ||
| Phosphorus, total [as P] | 4 | 16 | 0 | ||
| Oil and grease [soxhlet extr.] tot. | 2 | 16 | 0 | ||
| Nitrogen, total [as N] | 0 | 16 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 4 | 2 | 0 | ||
| Nitrite + Nitrate total [as N] | 4 | 2 | 0 | ||
| Toxicity [acute], Ceriodaphnia dubia | 0 | 1 | 0 | ||
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | 0 | 1 | 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
- 11Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 28, 2026 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| May 28, 2026 | Permit Violations - Violation Specified in Comment | ST6 |
| May 28, 2026 | Effluent Violations - Numeric effluent violation | ST6 |
| July 31, 2020 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| July 31, 2020 | Effluent Violations - Narrative Effluent Violation | ST6 |
| July 31, 2020 | Effluent Violations - Unauthorized Discharge | ST6 |
| July 31, 2020 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| July 31, 2020 | Effluent Violations - Numeric effluent violation | ST6 |
| July 31, 2020 | Permit Violations - Violation Specified in Comment | ST6 |
| July 31, 2020 | Reporting Violations - Failure to submit required report (non-DMR non-pretreatment) | ST6 |
| January 10, 2020 | Reporting Violations - Failure to Submit DMRs | 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 MO0046647 there.
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Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.