Velarion Records

Clean Water Act discharge permit · NPDES MS0020117

MERIDIAN POTW, Meridian, MS: NPDES MS0020117 discharge permit, effluent exceedances, inspections, penalties

MERIDIAN POTW holds NPDES permit MS0020117, which discharges to Sowashee Creek. EPA’s file records it issued September 13, 2016 and expiring August 31, 2021. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedMERIDIAN POTW
Permittee as filedMERIDIAN POTW
NPDES IDMS0020117
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 13, 2016
Expiration dateAugust 31, 2021
Issuing agencyMDEQ
AddressMeridian, MS 39301
Receiving waterSOWASHEE CREEK
Program components on fileBiosolids, POTW, Pretreatment
NAICS221320 – Sewage Treatment Facilities
SIC4952 – Sewerage Systems

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Nitrogen, ammonia total [as N]289569April 30, 2024439% over the limit
Copper, total recoverable47462October 31, 20251,141% over the limit
Solids, total suspended186438October 31, 2025404% over the limit
Solids, suspended percent removal23633June 30, 2026220% over the limit
Chlorine, total residual33932February 28, 20231,142% over the limit
Coliform, fecal general22016July 31, 2024651% over the limit
BOD, carbonaceous [5 day, 20 C]283711October 31, 202254% over the limit
Oxygen, dissolved [DO]5168October 31, 200980% over the limit
Cyanide, total recoverable066December 31, 2007306% over the limit
BOD, carb-5 day, 20 deg C, percent removal263May 31, 20267% over the limit
Zinc, total recoverable022December 31, 2007497% over the limit
Cadmium, total recoverable022September 30, 200856% over the limit
BOD, 5-day, percent removal022March 31, 201033% over the limit
pH691July 31, 2010
Nitrogen, total [as N]6140
Phosphorus, total [as P]6140
Flow, in conduit or thru treatment plant680
Sludge settleability 30 minute460
Cyanide, free [amenable to chlorination]040
%Effect Static Renewal 7 Day Chronic Ceriodaphnia dubia020
%Effect Static Renewal 7Day Chronic Pimephales promelas020

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

DateWhat EPA recordedAgency
August 23, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
August 17, 2026Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
July 19, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
July 13, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
July 12, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
July 6, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
July 5, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
July 5, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
July 5, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
July 5, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 24, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
June 18, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 18, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 18, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 18, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 18, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 18, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
June 16, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 16, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
June 9, 2026Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
May 25, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
May 25, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
May 25, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
May 25, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
May 8, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
May 8, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
May 4, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
May 2, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentST6
April 30, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
April 28, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
April 24, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
March 23, 2026Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
March 14, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]ST6
March 11, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
March 8, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
January 25, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
January 25, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
January 20, 2026Dry-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
January 11, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
January 10, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6
January 9, 2026Wet-weather SSO discharge to waters of the U.S. that may endanger health or the environmentST6

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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Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

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