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Clean Water Act discharge permit · NPDES AZC114741

RIO RICO SWITCHYARD SUBSTATION, Rio Rico, AZ: NPDES AZC114741 discharge permit, effluent exceedances, inspections, penalties

RIO RICO SWITCHYARD SUBSTATION, held by American Power, Llc, holds NPDES permit AZC114741, which discharges to Unnamed Ephemeral Tributary. EPA’s file records it issued February 19, 2026 and expiring August 28, 2030.

RIO RICO SWITCHYARD SUBSTATION, Rio Rico, Arizona: Coverage under a general permit AZC114741, held by American Power, Llc; Effective; issued February 19, 2026, term to August 28, 2030, by ADEQ; discharges to Unnamed ephemeral tributary.

RIO RICO SWITCHYARD SUBSTATION among its neighbors

EPA’s permit file holds 3 discharge permits in the Canada de la Paloma-Santa Cruz River subwatershed (HUC 150503010303), AZC114741 among them.

Other permits in the Canada de la Paloma-Santa Cruz River subwatershed (HUC 150503010303)

What the register holds for RIO RICO SWITCHYARD SUBSTATION: its NPDES ID, its permit type and status, its dates, its address in Rio Rico, Arizona, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC114741.

Identity

Facility as filedRIO RICO SWITCHYARD SUBSTATION
Permittee as filedAmerican Power, Llc
NPDES IDAZC114741
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
IssuedFebruary 19, 2026
Expiration dateAugust 28, 2030
Issuing agencyADEQ
AddressRio Rico, AZ 85648
Receiving waterUnnamed ephemeral tributary
Receiving water impaired303(D) Listed
SubwatershedCanada de la Paloma-Santa Cruz River (HUC 150503010303)

Effluent limits and exceedances

EPA’s limits and effluent violation files hold no pollutant row for NPDES AZC114741.

Inspections, violations and enforcement

EPA’s single-event violation file, as loaded, holds no violation for NPDES AZC114741.

Inspections

EPA’s inspection file holds no inspection for NPDES AZC114741.

Formal enforcement and penalties

0 formal actions, 0 of them with a penalty assessed. Federal and state penalties are separate figures from separate authorities and are shown as each was filed, never added together.

Informal enforcement

EPA’s informal enforcement file holds no action for NPDES AZC114741.

Watch this permit

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Nearby on the register

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

What this page shows

This public-records page covers the Clean Water Act NPDES permit AZC114741 for the Rio Rico Switchyard Substation in Rio Rico, AZ, held by American Power, Llc, which discharges to an unnamed ephemeral tributary. The permit is listed as Effective, issued February 19, 2026 and expiring August 28, 2030, with a Minor Discharger class, 0 pollutants under a numeric limit, and 0 pollutants with an effluent exceedance.