JOINT VENTURE WWTF
NPDES ID: AZ0021415
E — SNC: Effluent violation (monthly average limit)
The facility discharged more of a pollutant than its permit allows, based on a monthly average.
This quarter: 2 effluent violations.
Violations
May 31, 2026
Selenium, total recoverable
9% over limit
Discharged 0.0027 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
45% over limit
Discharged 0.0027 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Selenium, total recoverable
34% over limit
Discharged 0.0033 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
77% over limit
Discharged 0.0033 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Selenium, total recoverable
104% over limit
Discharged 0.0038 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
54% over limit
Discharged 0.0038 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Selenium, total recoverable
54% over limit
Discharged 0.0038 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
104% over limit
Discharged 0.0038 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Selenium, total recoverable
26% over limit
Discharged 0.0031 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
67% over limit
Discharged 0.0031 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Selenium, total recoverable
58% over limit
Discharged 0.0039 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
110% over limit
Discharged 0.0039 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Selenium, total recoverable
30% over limit
Discharged 0.0109 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
94% over limit
Discharged 0.0048 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
158% over limit
Discharged 0.0048 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Selenium, total recoverable
212% over limit
Discharged 0.0058 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
135% over limit
Discharged 0.0058 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
18% over limit
Discharged 0.0099 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Selenium, total recoverable
159% over limit
Discharged 0.0064 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
16% over limit
Discharged 0.0129 kg/d against a permitted limit of 0.0111 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
745% over limit
Discharged 1986.3 MPN/100mL against a permitted limit of 235 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
54% over limit
Discharged 0.0129 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
244% over limit
Discharged 0.0064 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Selenium, total recoverable
190% over limit
Discharged 0.0054 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
2% over limit
Discharged 0.0113 kg/d against a permitted limit of 0.0111 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
930% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 235 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
119% over limit
Discharged 0.0054 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
35% over limit
Discharged 0.0113 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Numeric Violation
E. coli
664% over limit
Discharged 962.9 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Selenium, total recoverable
8% over limit
Discharged 0.0091 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
142% over limit
Discharged 0.0045 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
82% over limit
Discharged 0.0045 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Selenium, total recoverable
24% over limit
Discharged 0.0023 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
February 28, 2025
E. coli
648% over limit
Discharged 942 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
E. coli
930% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 235 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Selenium, total recoverable
18% over limit
Discharged 0.0022 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
January 31, 2025
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (HI WK AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 204 kg/d (HI WK AV)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (HI WK AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (HI WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 204 kg/d (HI WK AV)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 136 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 136 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (HI WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.091 kg/d (DAILY MX)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0111 kg/d (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0201 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (HI WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.045 kg/d (MO AVG)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.01 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (HI WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
December 31, 2024
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0111 kg/d (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (HI WK AV)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0201 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (HI WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
E. coli
289% over limit
Discharged 490.62 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (HI WK AV)
DMR, Monitor Only - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.045 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (HI WK AV)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 136 kg/d (MO AVG)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 204 kg/d (HI WK AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
E. coli
930% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 235 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (HI WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (HI WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 136 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.01 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.091 kg/d (DAILY MX)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 204 kg/d (HI WK AV)
DMR, Limited - Overdue
November 30, 2024
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 136 kg/d (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 136 kg/d (MO AVG)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.091 kg/d (DAILY MX)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0084 kg/d (MO AVG)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00247 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0201 mg/L (DAILY MX)
DMR, Limited - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (HI WK AV)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (HI WK AV)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 45 mg/L (HI WK AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.01 mg/L (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (MO AVG)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Selenium, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.0111 kg/d (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (HI WK AV)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 kg/d against a permitted limit of 204 kg/d (HI WK AV)
DMR, Limited - Overdue
Arsenic, total recoverable
0% over limit
Discharged 0 kg/d against a permitted limit of 0.045 kg/d (MO AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (DAILY MX)
DMR, Monitor Only - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 kg/d against a permitted limit of 204 kg/d (HI WK AV)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
August 31, 2024
E. coli
453% over limit
Discharged 1299.7 MPN/100mL against a permitted limit of 235 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
E. coli
119% over limit
Discharged 275.9 MPN/100mL against a permitted limit of 126 MPN/100mL (MO AVG)
DMR, Limited - Numeric Violation
Selenium, total recoverable
13% over limit
Discharged 0.0021 mg/L against a permitted limit of 0.00186 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
August 1, 2026 (5 days ago)