Clean Water Act discharge permit · NPDES MO0128597

AYERCO #26 ALEXANDRIA STATION WWTP, Alexandria, MO: NPDES MO0128597 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
6Pollutants under a numeric limit
6Pollutants with an effluent exceedance

AYERCO #26 ALEXANDRIA STATION WWTP, held by Ayers Oil Company, holds NPDES permit MO0128597, which discharges to Tributary To Mississippi R.. EPA’s file records it issued March 20, 2018 and expiring March 31, 2023. 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 filed	AYERCO #26 ALEXANDRIA STATION WWTP
Permittee as filed	Ayers Oil Company
NPDES ID	MO0128597
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	March 20, 2018
Expiration date	March 31, 2023
Address	Alexandria, MO 63430
Receiving water	Tributary to Mississippi R.
Subwatershed	Greys Island-Mississippi River (HUC 071100010601)
SIC	5541 – Gasoline Service Stations

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

8Pollutants on file
6Under a numeric limit
8With a violation of any kind
6With 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
Nitrogen, ammonia total [as N]	6	41	19	March 31, 2026	1,663% over the limit
E. coli	2	20	6	June 30, 2025	99,999% over the limit
BOD, 5-day, 20 deg. C	2	26	4	March 31, 2026	139% over the limit
pH	2	25	3	September 30, 2025
E. coli, colony forming units [CFU]	0	3	3	September 30, 2016	1,805% over the limit
Solids, total suspended	2	23	1	December 31, 2016	17% over the limit
Flow, in conduit or thru treatment plant	2	22	0
Temperature, water deg. centigrade	0	4	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

9Single-event violations

Date	What EPA recorded	Agency
April 23, 2026	Permit Violations - Violation Specified in Comment	ST6
April 23, 2026	Effluent Violations - Numeric effluent violation	ST6
March 31, 2026	Effluent Violations - Numeric effluent violation	ST6
March 28, 2025	Effluent Violations - Numeric effluent violation	ST6
June 30, 2023	Effluent Violations - Numeric effluent violation	ST6
April 14, 2021	Effluent Violations - Numeric effluent violation	ST6
April 14, 2021	Reporting Violations - Improper/ Incorrect Reporting	ST6
June 30, 2020	Reporting Violations - Failure to Submit DMRs	ST6
July 9, 2019	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 MO0128597 there.

Nearby on the register

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

This public-records page covers NPDES permit MO0128597, held by Ayers Oil Company for AYERCO #26 ALEXANDRIA STATION WWTP in Alexandria, MO, which discharges to Tributary To Mississippi R. The page lists 6 pollutants under a numeric limit and 6 pollutants with an effluent exceedance, with the permit shown as administratively continued and classed as a Minor discharger. The permit's dates were issued March 20, 2018 and expire March 31, 2023, as they stood when the record was loaded on October 14, 2026.