GILPIN COUNTY SCHOOL DISTRICT RE-1
NPDES ID: COX631049
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: 3 effluent violations.
Violations
May 31, 2026
Chloride [as Cl]
1% over limit
Discharged 252 mg/L against a permitted limit of 250 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
58% over limit
Discharged 630 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Solids, total dissolved
32% over limit
Discharged 529 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Solids, total dissolved
76% over limit
Discharged 704 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, inorganic total
19% over limit
Discharged 11.9 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total dissolved
50% over limit
Discharged 601 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
17% over limit
Discharged 27 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
Coliform, total general
1127% over limit
Discharged 27 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, inorganic total
17% over limit
Discharged 11.7 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, total general
78% over limit
Discharged 41 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
Coliform, total general
1764% over limit
Discharged 41 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
23% over limit
Discharged 492 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total dissolved
30% over limit
Discharged 519 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
8535% over limit
Discharged 1986 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
Coliform, total general
90173% over limit
Discharged 1986 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Coliform, total general
64173% over limit
Discharged 1414 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
6048% over limit
Discharged 1414 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total dissolved
27% over limit
Discharged 507 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, total dissolved
35% over limit
Discharged 541 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
3248% over limit
Discharged 770 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
Coliform, total general
34900% over limit
Discharged 770 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total dissolved
14% over limit
Discharged 455 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, inorganic total
29% over limit
Discharged 12.9 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total dissolved
5% over limit
Discharged 418 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Solids, total dissolved
35% over limit
Discharged 540 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Solids, total dissolved
41% over limit
Discharged 562 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Coliform, total general
1583% over limit
Discharged 387 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
Coliform, total general
17491% over limit
Discharged 387 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total dissolved
21% over limit
Discharged 484 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, total dissolved
22% over limit
Discharged 486 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 8.8 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
Coliform, total general
748% over limit
Discharged 195 MPN/100mL against a permitted limit of 23 MPN/100mL (30DA MAX)
DMR, Limited - Numeric Violation
Coliform, total general
8764% over limit
Discharged 195 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Solids, total dissolved
25% over limit
Discharged 501 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, total general
536% over limit
Discharged 14 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 9 SU against a permitted limit of 8.5 SU (MAXIMUM)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, total dissolved
50% over limit
Discharged 600 mg/L against a permitted limit of 400 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
39% over limit
Discharged 13.9 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, total general
441% over limit
Discharged 11.9 MPN/100mL against a permitted limit of 2.2 MPN/100mL (30DA AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)