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Clean Water Act discharge permit · NPDES IDR10C0TN

WALTON WOODS SUBDIVISION, Nampa, ID: NPDES IDR10C0TN discharge permit, effluent exceedances, inspections, penalties

WALTON WOODS SUBDIVISION, held by Trilogy Developments, holds NPDES permit IDR10C0TN, which discharges to North Nampa Lateral. EPA’s file records it issued January 10, 2022 and expiring February 9, 2027. 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 WALTON WOODS SUBDIVISION: its NPDES ID, its permit type and status, its dates, its address in Nampa, Idaho, its receiving water. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES IDR10C0TN.

Identity

Facility as filedWALTON WOODS SUBDIVISION
Permittee as filedTrilogy Developments
NPDES IDIDR10C0TN
Permit statusEffective
Permit typeCoverage under a general permit
Discharger classMinor discharger
Facility typeNot a publicly owned treatment works
ProgramConstruction stormwater
IssuedJanuary 10, 2022
Expiration dateFebruary 9, 2027
AddressNampa, ID 83687
Receiving waterNorth Nampa Lateral
Receiving water impaired303(D) Listed
SubwatershedMason Creek (HUC 170501140407)

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 IDR10C0TN.

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 IDR10C0TN.

Inspections

EPA’s inspection file holds no inspection for NPDES IDR10C0TN.

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 IDR10C0TN.

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 IDR10C0TN there.

WALTON WOODS SUBDIVISION, Nampa, Idaho: Coverage under a general permit IDR10C0TN, held by Trilogy Developments; Construction stormwater; Effective; issued January 10, 2022, term to February 9, 2027; discharges to North Nampa Lateral.

Idaho holds 3,630 Construction stormwater coverages of this permit type in EPA’s file; 576 were issued before IDR10C0TN. Trilogy Developments holds 2 permits in Idaho.

Other permits held by Trilogy Developments

Coverages issued nearest IDR10C0TN

WALTON WOODS SUBDIVISION among its neighbors

EPA’s permit file holds 360 discharge permits in the Mason Creek subwatershed (HUC 170501140407), IDR10C0TN among them. Its county holds 377, 2 of them major permits; IDR10C0TN is a minor permit.

Other permits in the Mason Creek subwatershed (HUC 170501140407)

Nearby on the register

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

What this page shows

WALTON WOODS SUBDIVISION is among 308 storm water construction permits in Canyon County on EPA's NPDES register, and 0.0% of them have a violation on file. The Mason Creek subwatershed holds 360 NPDES permits, and 10.0% of the 269 Canyon County storm water construction permits counted with this entry were issued before it.