PALO VERDE UTILITIES CO - WRF
NPDES ID: AZ0025071
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: 1 effluent violation, 11 single-event violations.
Violations
June 30, 2026
Cyanide, total [as CN]
9% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.0058 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Chlorine, total residual
667% over limit
Discharged 0.069 mg/L against a permitted limit of 0.009 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
790% over limit
Discharged 0.93460004 kg/d against a permitted limit of 0.105 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
3806% over limit
Discharged 16.01400076 kg/d against a permitted limit of 0.41000002 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
321% over limit
Discharged 2419.6 MPN/100mL against a permitted limit of 575 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
4811% over limit
Discharged 0.88400004 mg/L against a permitted limit of 0.018 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)