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Clean Water Act discharge permit · NPDES AZS000018

ARIZONA DEPARTMENT OF TRANSPORTATION-MS4, AZ: NPDES AZS000018 discharge permit, effluent exceedances, inspections, penalties

ARIZONA DEPARTMENT OF TRANSPORTATION-MS4, held by ARIZONA DEPT OF TRANSPORTATION, holds NPDES permit AZS000018. EPA’s file records it issued December 31, 2020 and expiring June 30, 2026. 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.

Identity

Facility as filedARIZONA DEPARTMENT OF TRANSPORTATION-MS4
Permittee as filedARIZONA DEPT OF TRANSPORTATION
NPDES IDAZS000018
Permit statusEffective
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
ProgramLarge municipal storm sewer systems
IssuedDecember 31, 2020
Expiration dateJune 30, 2026
AddressAZ 85701
SubwatershedSinclair Wash (HUC 150200150101)

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

Effluent limits and exceedances

An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.

Pollutant or measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Temperature, water deg. centigrade020
pH020
Solids, total suspended020
Nitrogen, ammonia total [as N]020
Nitrogen, Kjeldahl, total [as N]020
Nitrite + Nitrate total [as N]020
Phosphorus, total [as P]020
Hardness, total [as CaCO3]020
Arsenic, total [as As]020
Barium, total [as Ba]020
Cadmium, total [as Cd]020
Chromium, total [as Cr]020
Copper, total [as Cu]020
Lead, total [as Pb]020
Silver, total [as Ag]020
Zinc, total [as Zn]020
Selenium, total [as Se]020
Oil and grease020
E. coli, colony forming units [CFU]020
Mercury, total [as Hg]020
Acenaphthylene010
Acenaphthene010
Anthracene010
Benzo[b]fluoranthene010
Benzo[k]fluoranthene010
Benzo[a]pyrene010
Chrysene010
Fluoranthene010
Fluorene010
Indeno[1,2,3-cd]pyrene010
Phenanthrene010
Pyrene010
Benzo[ghi]perylene010
Benzo[a]anthracene010
Dibenz[a,h]anthracene010
Naphthalene010

EPA’s effluent violation file records no exceedance of a numeric limit for NPDES AZS000018.

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 AZS000018.

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, AZS000018.

Start the watch

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  • One permit holder — $99/month
  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 AZS000018 there.

Nearby on the register

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