Clean Water Act discharge permit · NPDES IDS028118

CALDWELL MS4, CITY OF, Caldwell, ID: NPDES IDS028118 discharge permit, effluent exceedances, inspections, penalties

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

CALDWELL MS4, CITY OF holds NPDES permit IDS028118, which discharges to Boise River, Indian & Mason Creek. EPA’s file records it issued September 4, 2009 and expiring October 14, 2014. 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.

What the register holds for CALDWELL MS4, CITY OF: its NPDES ID, its permit type and status, its dates, its address in Caldwell, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDS028118.

Identity

Facility as filed	CALDWELL MS4, CITY OF
Permittee as filed	CALDWELL MS4, CITY OF
NPDES ID	IDS028118
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
Program	Small municipal storm sewer systems
Issued	September 4, 2009
Expiration date	October 14, 2014
Address	Caldwell, ID 83605
Receiving water	BOISE RIVER, INDIAN & MASON CREEK
Receiving water impaired	303(D) Listed
Subwatershed	Lower Indian Creek (HUC 170501140507)
SIC	9199 – General Government

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

0Pollutants on file
0Under a numeric limit
0With a violation of any kind
0With an effluent exceedance

EPA’s limits and effluent violation files hold no pollutant row for NPDES IDS028118.

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 IDS028118.

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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, IDS028118.

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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 IDS028118 there.

Nearby on the register

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

This public-records page covers Clean Water Act NPDES permit IDS028118, held by CALDWELL MS4, CITY OF in Caldwell, Idaho, for small municipal storm sewer systems, with a status of administratively continued and a minor discharger class. The page lists 0 pollutants under a numeric limit and 0 pollutants with an effluent exceedance, and records no violation for the permit in EPA's effluent or single-event violation files.