USFS - BOXELDER JCCCC
NPDES ID: SD0020834
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: 6 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
210% over limit
Discharged 25.7 mg/L against a permitted limit of 8.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
291% over limit
Discharged 18 mg/L against a permitted limit of 4.6 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
25% over limit
Discharged 790 MPN/100mL against a permitted limit of 630 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
105% over limit
Discharged 2420 MPN/100mL against a permitted limit of 1178 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
206% over limit
Discharged 25.4 mg/L against a permitted limit of 8.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
280% over limit
Discharged 17.5 mg/L against a permitted limit of 4.6 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
51% over limit
Discharged 12.5 mg/L against a permitted limit of 8.3 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
71% over limit
Discharged 7.85 mg/L against a permitted limit of 4.6 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, total suspended
14% over limit
Discharged 20 mg/L against a permitted limit of 17.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
55% over limit
Discharged 7.3 mg/L against a permitted limit of 4.7 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
100% over limit
Discharged 35 mg/L against a permitted limit of 17.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
17% over limit
Discharged 11 mg/L against a permitted limit of 9.4 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
92% over limit
Discharged 19.2 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, ammonia total [as N]
5% over limit
Discharged 5.14 mg/L against a permitted limit of 4.9 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
36% over limit
Discharged 6.25 mg/L against a permitted limit of 4.6 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
54% over limit
Discharged 27 mg/L against a permitted limit of 17.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
E. coli, colony forming units [CFU]
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 630 MPN/100mL (30DA GEO)
DMR, Limited - Overdue
E. coli, colony forming units [CFU]
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 1178 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
April 30, 2025
Solids, total suspended
12% over limit
Discharged 19.6 mg/L against a permitted limit of 17.5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
E. coli, colony forming units [CFU]
14% over limit
Discharged 719 MPN/100mL against a permitted limit of 630 MPN/100mL (30DA GEO)
DMR, Limited - Numeric Violation
E. coli, colony forming units [CFU]
105% over limit
Discharged 2420 MPN/100mL against a permitted limit of 1178 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
July 31, 2024
E. coli, colony forming units [CFU]
105% over limit
Discharged 2420 MPN/100mL against a permitted limit of 1178 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)