ALMA TOWN OF
NPDES ID: COG591177
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: 5 effluent violations.
Violations
May 31, 2026
Nitrogen, ammonia total [as N]
11% over limit
Discharged 42 mg/L against a permitted limit of 38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
133% over limit
Discharged 42 mg/L against a permitted limit of 18 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Nitrogen, ammonia total [as N]
73% over limit
Discharged 38 mg/L against a permitted limit of 22 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
173% over limit
Discharged 59 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
27% over limit
Discharged 81 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
128% over limit
Discharged 41 mg/L against a permitted limit of 18 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
37% over limit
Discharged 41 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
188% over limit
Discharged 46 mg/L against a permitted limit of 16 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
70% over limit
Discharged 46 mg/L against a permitted limit of 27 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
173% over limit
Discharged 41 mg/L against a permitted limit of 15 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
58% over limit
Discharged 41 mg/L against a permitted limit of 26 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, percent removal
5% over limit
Discharged 84.21 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
163% over limit
Discharged 42 mg/L against a permitted limit of 16 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
238% over limit
Discharged 49.31 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
56% over limit
Discharged 42 mg/L against a permitted limit of 27 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
23% over limit
Discharged 37 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
106% over limit
Discharged 35 mg/L against a permitted limit of 17 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
21% over limit
Discharged 35 mg/L against a permitted limit of 29 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Nitrogen, ammonia total [as N]
82% over limit
Discharged 40 mg/L against a permitted limit of 22 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
8% over limit
Discharged 40 mg/L against a permitted limit of 37 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, inorganic total
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (ROLL AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
104% over limit
Discharged 49 mg/L against a permitted limit of 24 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Solids, suspended percent removal
93% over limit
Discharged 71 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
81% over limit
Discharged 47 mg/L against a permitted limit of 26 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
30% over limit
Discharged 35 mg/L against a permitted limit of 27 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Nitrogen, ammonia total [as N]
29% over limit
Discharged 36 mg/L against a permitted limit of 28 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Nitrogen, ammonia total [as N]
117% over limit
Discharged 39 mg/L against a permitted limit of 18 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
3% over limit
Discharged 39 mg/L against a permitted limit of 38 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
April 30, 2025
Nitrogen, ammonia total [as N]
27% over limit
Discharged 28 mg/L against a permitted limit of 22 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2025
Solids, total suspended
203% over limit
Discharged 91 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
LC50 Static Renewal 96Hr Acute Pimephales promelas
1% over limit
Discharged 98.7 % against a permitted limit of 100 % (MN VALUE)
DMR, Limited - Numeric Violation
Solids, total suspended
102% over limit
Discharged 91 mg/L against a permitted limit of 45 mg/L (MX 7D AV)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
89% over limit
Discharged 34 mg/L against a permitted limit of 18 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
13% over limit
Discharged 34 mg/L against a permitted limit of 30 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2025
Nitrogen, ammonia total [as N]
26% over limit
Discharged 34 mg/L against a permitted limit of 27 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
113% over limit
Discharged 34 mg/L against a permitted limit of 16 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2025
Nitrogen, ammonia total [as N]
35% over limit
Discharged 35 mg/L against a permitted limit of 26 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
133% over limit
Discharged 35 mg/L against a permitted limit of 15 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
December 31, 2024
Nitrogen, ammonia total [as N]
53% over limit
Discharged 41.2 mg/L against a permitted limit of 27 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
17% over limit
Discharged 35 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
158% over limit
Discharged 41.2 mg/L against a permitted limit of 16 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
20% over limit
Discharged 36 mg/L against a permitted limit of 30 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
LC50 Static Renewal 96Hr Acute Pimephales promelas
27% over limit
Discharged 73 % against a permitted limit of 100 % (MN VALUE)
DMR, Limited - Numeric Violation
November 30, 2024
Nitrogen, ammonia total [as N]
82% over limit
Discharged 31 mg/L against a permitted limit of 17 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
7% over limit
Discharged 31 mg/L against a permitted limit of 29 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, suspended percent removal
31% over limit
Discharged 80.41 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
59% over limit
Discharged 35 mg/L against a permitted limit of 22 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Nitrogen, ammonia total [as N]
29% over limit
Discharged 31 mg/L against a permitted limit of 24 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
LC50 Static Renewal 96Hr Acute Pimephales promelas
26% over limit
Discharged 73.8 % against a permitted limit of 100 % (MN VALUE)
DMR, Limited - Numeric Violation
August 31, 2024
Solids, suspended percent removal
10% over limit
Discharged 83.43 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
July 31, 2024
Nitrogen, ammonia total [as N]
4% over limit
Discharged 28 mg/L against a permitted limit of 27 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, suspended percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)