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Clean Water Act discharge permit · NPDES CAZ480144

MODESTO IRRIGATION DISTRICT, Modesto, CA: NPDES CAZ480144 discharge permit, effluent exceedances, inspections, penalties

MODESTO IRRIGATION DISTRICT, held by Modesto Irrigation District, holds NPDES permit CAZ480144. EPA’s file records it issued November 2, 2016 and expiring June 30, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for MODESTO IRRIGATION DISTRICT: its NPDES ID, its permit type and status, its dates, its address in Modesto, California. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CAZ480144.

Identity

Facility as filedMODESTO IRRIGATION DISTRICT
Permittee as filedModesto Irrigation District
NPDES IDCAZ480144
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramIndustrial stormwater
IssuedNovember 2, 2016
Expiration dateJune 30, 2020
Issuing agencyCA Waterboards
AddressModesto, CA 95351
SubwatershedRiley Slough (HUC 180400100705)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES CAZ480144.

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES CAZ480144.

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, CAZ480144.

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How we handle your data → Privacy

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 CAZ480144 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.

What this page shows

The Modesto Irrigation District storm water industrial permit (NPDES ID CAZ480144) is one of 27 such permits in Modesto on EPA's NPDES register, and it sits among 12 NPDES permits in the Riley Slough subwatershed, this one included. Of all 27 Modesto storm water industrial permits, 29.6% carry an earlier issue date than this one, and the permit has no pollutants under a numeric limit and no pollutants with an effluent exceedance.