Clean Water Act discharge permit · NPDES IL0029076

GREENFIELD STP, CITY OF, Greenfield, IL: NPDES IL0029076 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
9Pollutants under a numeric limit
4Pollutants with an effluent exceedance

GREENFIELD STP, CITY OF, held by GREENFIELD, CITY OF, holds NPDES permit IL0029076, which discharges to Rubicon Creek. EPA’s file records it issued January 3, 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	GREENFIELD STP, CITY OF
Permittee as filed	GREENFIELD, CITY OF
NPDES ID	IL0029076
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 3, 2019
Expiration date	December 31, 2023
Address	Greenfield, IL 62044
Receiving water	RUBICON CREEK
Subwatershed	Rubicon Creek-Taylor Creek (HUC 071300120301)
Program components on file	Biosolids, POTW
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

9Pollutants on file
9Under a numeric limit
7With a violation of any kind
4With 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	5	22	22	October 31, 2025	95% over the limit
pH	2	8	8	October 31, 2025
Oxygen, dissolved [DO]	5	6	6	July 31, 2026	38% over the limit
BOD, carbonaceous [5 day, 20 C]	4	2	2	April 30, 2024	10% over the limit
Flow, in conduit or thru treatment plant	4	4	0
Nitrogen, ammonia total [as N]	1	2	0
Chlorine, total residual	1	1	0
BOD, 5-day, 20 deg. C	1	0	0
Coliform, fecal general	1	0	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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES IL0029076.

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 IL0029076 there.

Nearby on the register

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

This public-records page covers NPDES permit IL0029076, held by GREENFIELD, CITY OF for the GREENFIELD STP, CITY OF in Greenfield, IL, which discharges to Rubicon Creek within the Rubicon Creek-Taylor Creek subwatershed (HUC 071300120301). The permit is listed as administratively continued, with a discharger class of Minor, and the page shows 9 pollutants under a numeric limit and 4 pollutants with an effluent exceedance.