Clean Water Act discharge permit · NPDES MO0028762

PRINCETON WWTF, Princeton, MO: NPDES MO0028762 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
13Pollutants under a numeric limit
7Pollutants with an effluent exceedance

PRINCETON WWTF, held by City of Princeton, holds NPDES permit MO0028762, which discharges to Tributary To Weldon R.. EPA’s file records it issued January 4, 2019 and expiring December 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	PRINCETON WWTF
Permittee as filed	City of Princeton
NPDES ID	MO0028762
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	January 4, 2019
Expiration date	December 31, 2023
Address	Princeton, MO 64673
Receiving water	Tributary to Weldon R.
Subwatershed	Wildcat Creek-Weldon River (HUC 102801020903)
SIC	4952 – 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

16Pollutants on file
13Under a numeric limit
16With 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
Chlorine, total residual	2	22	14	December 31, 2016	150% over the limit
Solids, total suspended	2	14	4	August 31, 2020	89% over the limit
Oil and grease [soxhlet extr.] tot.	2	8	2	September 30, 2020	85% over the limit
BOD, 5-day, 20 deg. C	2	11	1	March 31, 2014	33% over the limit
BOD, 5-day, percent removal	1	2	1	June 30, 2024	57% over the limit
Solids, suspended percent removal	1	2	1	June 30, 2024	129% over the limit
E. coli, colony forming units [CFU]	0	1	1	July 31, 2015	77% over the limit
pH	2	50	0
Nitrogen, ammonia total [as N]	4	8	0
Oxygen, dissolved [DO]	2	8	0
Flow, in conduit or thru treatment plant	2	8	0
E. coli	2	8	0
Nitrogen, total [as N]	2	6	0
Phosphorus, total [as P]	2	6	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

3Single-event violations

Date	What EPA recorded	Agency
September 26, 2025	Permit Violations - Violation Specified in Comment	ST6
September 26, 2025	Reporting Violations - Failure to submit required report (non-DMR non-pretreatment)	ST6
March 28, 2025	Effluent Violations - Numeric effluent 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.

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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 MO0028762 there.

Nearby on the register

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

This public-records page covers NPDES permit MO0028762 for the PRINCETON WWTF in Princeton, MO, held by the City of Princeton, which discharges to Tributary To Weldon R. The permit is listed as administratively continued past its December 31, 2023 expiration, with 7 pollutants under a numeric limit and 7 pollutants showing an effluent exceedance. The page also notes that the permit's status reflects EPA's file as it stood on October 14, 2026.