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Clean Water Act discharge permit · NPDES CAC416543

WALNUT PARK MUTUAL WATER COMPANY WS, Huntington Park, CA: NPDES CAC416543 discharge permit, effluent exceedances, inspections, penalties

WALNUT PARK MUTUAL WATER COMPANY WS, held by Walnut Park Mutual Water Co., holds NPDES permit CAC416543. EPA’s file records it issued July 1, 2016 and expiring February 25, 2020. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

What the register holds for WALNUT PARK MUTUAL WATER COMPANY WS: its NPDES ID, its permit type and status, its dates, its address in Huntington Park, California. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES CAC416543.

Identity

Facility as filedWALNUT PARK MUTUAL WATER COMPANY WS
Permittee as filedWalnut Park Mutual Water Co.
NPDES IDCAC416543
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
IssuedJuly 1, 2016
Expiration dateFebruary 25, 2020
Issuing agencyCA Waterboards
AddressHuntington Park, CA 90255
SubwatershedCompton Creek-Los Angeles River (HUC 180701050402)

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 CAC416543.

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 CAC416543.

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, CAC416543.

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  • One state — $4,990/year
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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 CAC416543 there.

Nearby on the register

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