Clean Water Act discharge permit · NPDES AZ0024813
BENSCH RANCH WWTP, Mayer, AZ: NPDES AZ0024813 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 39Pollutants under a numeric limit
- 8Pollutants with an effluent exceedance
BENSCH RANCH WWTP, held by BENSCH RANCH UTILITIES LLC, holds NPDES permit AZ0024813, which discharges to Big Bug Creek Trib Of Agua Fria Rvr. EPA’s file records it issued September 13, 2007 and expiring October 18, 2012. 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 filed | BENSCH RANCH WWTP |
|---|---|
| Permittee as filed | BENSCH RANCH UTILITIES LLC |
| NPDES ID | AZ0024813 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Issued | September 13, 2007 |
| Expiration date | October 18, 2012 |
| Address | Mayer, AZ 86333 |
| Receiving water | BIG BUG CREEK TRIB OF AGUA FRIA RVR |
| Subwatershed | City of Holbrook-Little Colorado River (HUC 150200080206) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 40Pollutants on file
- 39Under a numeric limit
- 9With a violation of any kind
- 8With an effluent exceedance
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 measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Solids, suspended percent removal | 1 | 18 | 18 | October 31, 2017 | 567% over the limit |
| BOD, 5-day, percent removal | 1 | 10 | 10 | November 30, 2017 | 210% over the limit |
| Copper, total recoverable | 5 | 8 | 8 | June 30, 2017 | 500% over the limit |
| BOD, 5-day, 20 deg. C | 7 | 7 | 7 | July 31, 2016 | 413% over the limit |
| Solids, total suspended | 7 | 3 | 3 | October 31, 2016 | 80% over the limit |
| Selenium, total recoverable | 5 | 3 | 3 | December 31, 2016 | 55% over the limit |
| E. coli, colony forming units [CFU] | 0 | 3 | 3 | July 31, 2017 | 496% over the limit |
| E. coli | 2 | 2 | 2 | November 30, 2010 | 283% over the limit |
| Chlorine, total residual | 5 | 4 | 0 | ||
| Cyanide, total [as CN] | 5 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 5 | 0 | 0 | ||
| Arsenic, total recoverable | 5 | 0 | 0 | ||
| Thallium, total recoverable | 5 | 0 | 0 | ||
| Beryllium, total recoverable [as Be] | 5 | 0 | 0 | ||
| Nickel, total recoverable | 5 | 0 | 0 | ||
| Silver total recoverable | 5 | 0 | 0 | ||
| Zinc, total recoverable | 5 | 0 | 0 | ||
| Cadmium, total recoverable | 5 | 0 | 0 | ||
| Lead, total recoverable | 5 | 0 | 0 | ||
| Chromium, total recoverable | 5 | 0 | 0 | ||
| Chromium, hexavalent dissolved [as Cr] | 5 | 0 | 0 | ||
| Antimony, total recoverable | 5 | 0 | 0 | ||
| Mercury, total recoverable | 5 | 0 | 0 | ||
| pH | 4 | 0 | 0 | ||
| Sulfide, total [as S] | 4 | 0 | 0 | ||
| Temperature, water deg. centigrade | 3 | 0 | 0 | ||
| Nitrogen, ammonia total [as N] | 3 | 0 | 0 | ||
| Boron, total recoverable | 3 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Ceriodaphnia dubia | 2 | 0 | 0 | ||
| Pass/Fail Static Renewal 96Hr Acute Pimephales Promelas | 2 | 0 | 0 | ||
| TU Static 4 Day Chronic Raphidocelis subcapitata (formerly Selenastrum capricornutum) | 2 | 0 | 0 | ||
| TU Static Renewal 7-Day Chronic Ceriodaphnia dubia | 2 | 0 | 0 | ||
| TU Static Renewal 7-Day Chronic Pimphales promelas | 2 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 0 | 0 | ||
| Oil & Grease | 1 | 0 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 1 | 0 | 0 | ||
| Nitrite + Nitrate total [as N] | 1 | 0 | 0 | ||
| Phosphorus, total [as P] | 1 | 0 | 0 | ||
| Solids, total dissolved | 1 | 0 | 0 |
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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES AZ0024813.
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, AZ0024813.
Start the watch
- 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 AZ0024813 there.
Nearby on the register
- Discharge permits in Mayer
- Every permit record in Mayer, A to Z
- Discharge permits in Arizona
- Every permit record in Arizona, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 14, 2026.