Clean Water Act discharge permit · NPDES MS0021547
CARY POTW, Cary, MS: NPDES MS0021547 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 11Pollutants under a numeric limit
- 11Pollutants with an effluent exceedance
CARY POTW holds NPDES permit MS0021547, which discharges to Ditch To Trib Of Sunflower River. EPA’s file records it issued April 18, 2017 and expiring March 31, 2022. 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 | CARY POTW |
|---|---|
| Permittee as filed | CARY POTW |
| NPDES ID | MS0021547 |
| 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 | April 18, 2017 |
| Expiration date | March 31, 2022 |
| Issuing agency | MDEQ |
| Address | Cary, MS 39054 |
| Receiving water | DITCH TO TRIB OF SUNFLOWER RIVER |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 11Under a numeric limit
- 14With 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 |
|---|---|---|---|---|---|
| BOD, 5-day, 20 deg. C | 8 | 704 | 188 | March 31, 2025 | 99,999% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 659 | 143 | March 31, 2025 | 48,100% over the limit |
| Coliform, fecal general | 2 | 106 | 66 | February 28, 2022 | 4,400% over the limit |
| Solids, suspended percent removal | 1 | 118 | 54 | March 31, 2025 | 600% over the limit |
| Chlorine, total residual | 2 | 165 | 38 | January 31, 2020 | 8,991% over the limit |
| E. coli | 0 | 126 | 36 | February 28, 2025 | 99,999% over the limit |
| BOD, 5-day, percent removal | 1 | 92 | 27 | March 31, 2025 | 707% over the limit |
| Solids, total suspended | 8 | 531 | 23 | March 31, 2025 | 2,406% over the limit |
| Oxygen, dissolved [DO] | 3 | 216 | 19 | June 30, 2023 | 100% over the limit |
| pH | 2 | 140 | 14 | August 31, 2022 | |
| Flow, in conduit or thru treatment plant | 2 | 145 | 12 | March 31, 2025 | 99,999% over the limit |
| Nitrogen, total [as N] | 0 | 180 | 0 | ||
| Phosphorus, total [as P] | 0 | 180 | 0 | ||
| Sludge settleability 30 minute | 2 | 130 | 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 |
|---|---|---|
| June 28, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| June 28, 2022 | Monitoring Violations - Frequency of Sampling 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.
Watch this permit
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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 MS0021547 there.
Nearby on the register
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.