LYTTON CITY OF STP
NPDES ID: IA0020940
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: 8 effluent violations.
Violations
June 30, 2026
Chloride [as Cl]
15% over limit
Discharged 2970.97869904 kg/d against a permitted limit of 2572.36397839 kg/d (30DA AVG)
DMR, Limited - Numeric Violation
Chloride [as Cl]
140% over limit
Discharged 933 mg/L against a permitted limit of 389 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Chloride [as Cl]
48% over limit
Discharged 933 mg/L against a permitted limit of 629 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
May 31, 2026
Chloride [as Cl]
131% over limit
Discharged 900 mg/L against a permitted limit of 389 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Chloride [as Cl]
43% over limit
Discharged 900 mg/L against a permitted limit of 629 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, carbonaceous [5 day, 20 C]
60% over limit
Discharged 64 mg/L against a permitted limit of 40 mg/L (7 DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (5 months ago)
Last confirmed
September 15, 2026 (5 days ago)