Clean Water Act discharge permit · NPDES AZC104274

PARCEL #175-20-018, Scottsdale, AZ: NPDES AZC104274 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
0Pollutants under a numeric limit
0Pollutants with an effluent exceedance
0Inspections on file
0Formal enforcement actions

PARCEL #175-20-018, held by Patterson Homes Llc, holds NPDES permit AZC104274. EPA’s file records it issued June 27, 2024 and expiring June 30, 2025.

PARCEL #175-20-018, Scottsdale, Arizona: Coverage under a general permit AZC104274, held by Patterson Homes Llc; Administratively continued (past its expiration date and still in force until reissued); issued June 27, 2024, term to June 30, 2025.

Other permits held by Patterson Homes Llc

PARCEL #168-37-017, Paradise Valley: AZC100505, issued September 28, 2023
PARCEL #168-23-024, Paradise Valley: AZC102822, issued March 4, 2024
PARCEL #173-09-124, Paradise Valley: AZC104256, issued June 26, 2024
PARCEL #168-57-008, Paradise Valley: AZC104487, issued July 19, 2024
PARCEL #168-57-020, Paradise Valley: AZC104563, issued July 24, 2024
PARCEL #175-20-019, Scottsdale: AZC104580, issued July 24, 2024
SILVER SKY: AZC105944, issued October 30, 2024
MOCKINGBIRD ESTATES, Paradise Valley: AZC106768, issued January 7, 2025
PARCEL #169-49-004, Paradise Valley: AZC107045, issued January 17, 2025
PARCEL #174-46-015E, Paradise Valley: AZC107171, issued January 24, 2025

PARCEL #175-20-018 among its neighbors

EPA’s permit file holds 128 discharge permits in the Upper Indian Bend Wash subwatershed (HUC 150601060202), AZC104274 among them.

Other permits in the Upper Indian Bend Wash subwatershed (HUC 150601060202)

18427-03 - 16-INCH PARADISE VALLEY ZONE 3C IMPROVEMENTS PHASE 2, Unknown: AZC112413, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030
18427-03 - 16-INCH PARADISE VALLEY ZONE 3C IMPROVEMENTS PHASE 2, Unknown: AZC113053, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030
24TH ST - SHEA TO STONEY MTN, Unknown: AZC116451, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030
24TH ST - SHEA TO STONEY MTN, Unknown: AZC116455, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030
2600-05; JET AVIATION SCOTTSDALE APRON MODIFICAITONS, Unknown: AZC115934, minor permit, discharging to Central Arizona Project Aqueduct, permit term to August 28, 2030
32ND ST - CHOLLA THROUGH SHEA, Unknown: AZC111618, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030
32ND ST - CHOLLA THROUGH SHEA, Unknown: AZC111703, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030
34TH STREET MANORS, Unknown: AZC114514, minor permit, permit term to August 28, 2030
5905 E DONNA LANE, Paradise Valley: AZC114184, minor permit, permit term to August 28, 2030
6161 MOUNTAIN VIEW RD, Paradise Valley: AZC117626, minor permit, discharging to Indian Bend Wash | HEADWATERS - SALT RIVER @ 3, permit term to August 28, 2030

What the register holds for PARCEL #175-20-018: its NPDES ID, its permit type and status, its dates, its address in Scottsdale, Arizona. EPA’s effluent violation file and its single-event violation file hold no violation for NPDES AZC104274.

Identity

Facility as filed	PARCEL #175-20-018
Permittee as filed	Patterson Homes Llc
NPDES ID	AZC104274
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Coverage under a general permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	June 27, 2024
Expiration date	June 30, 2025
Address	Scottsdale, AZ 85254
Subwatershed	Upper Indian Bend Wash (HUC 150601060202)

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 AZC104274.

Inspections, violations and enforcement

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES AZC104274.

Inspections

EPA’s inspection file holds no inspection for NPDES AZC104274.

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 AZC104274.

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, AZC104274.

Start the watch

How we handle your data → Privacy

Nearby on the register

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

PARCEL #175-20-018 is one of 72 general permit coverages in Scottsdale on EPA's NPDES register, and the percent of those coverages with a violation on file is 0.0%. Among the 128 NPDES permits in the Upper Indian Bend Wash subwatershed, this one is included, and 25.0% of all 72 Scottsdale general permit coverages were issued earlier than it. The permit records zero pollutants under a numeric limit and zero pollutants with an effluent exceedance.