Clean Water Act discharge permit · NPDES MN0021857

CHATFIELD WWTP, Chatfield, MN: NPDES MN0021857 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
1Pollutants with an effluent exceedance

CHATFIELD WWTP, held by CHATFIELD, holds NPDES permit MN0021857, which discharges to Root R N Br. EPA’s file records it issued June 27, 2014 and expiring May 31, 2019. 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	CHATFIELD WWTP
Permittee as filed	CHATFIELD
NPDES ID	MN0021857
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	June 27, 2014
Expiration date	May 31, 2019
Address	Chatfield, MN 55923
Receiving water	ROOT R N BR
Receiving water impaired	303(D) Listed
Subwatershed	Mill Creek (HUC 070400080107)
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

7Pollutants on file
0Under a numeric limit
7With a violation of any kind
1With 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	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Solids, total suspended	85	1	April 30, 1989	83% over the limit
Flow, in conduit or thru treatment plant	99	0
pH	96	0
BOD, carbonaceous [5 day, 20 C]	83	0
Chlorine, total residual	50	0
Coliform, fecal MPN + membrane ftl 44.5 C	32	0
Oxygen, dissolved [DO]	21	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 MN0021857.

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 MN0021857 there.

Nearby on the register

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

This public-records page covers Clean Water Act discharge permit NPDES MN0021857 for the CHATFIELD WWTP in Chatfield, MN, held by CHATFIELD and discharging to ROOT R N BR, with the status and dates as EPA's permit file stood when loaded on October 14, 2026. The page lists the permit as administratively continued, a minor discharger class, with 1 pollutant under a numeric limit, 1 pollutant with an effluent exceedance, and 7 pollutants on file.