ALTURAS WWTP
NPDES ID: CA0078921
S — SNC: Compliance schedule violation
The facility missed a deadline in its compliance schedule by more than 90 days.
This quarter: 4 effluent violations.
Violations
May 31, 2026
Aluminum, total recoverable
252% over limit
Discharged 1.02000005 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
176% over limit
Discharged 1.02000005 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Copper, total recoverable
164% over limit
Discharged 0.0177 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
18% over limit
Discharged 0.0177 mg/L against a permitted limit of 0.015 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
BOD, 5-day, 20 deg. C
3% over limit
Discharged 30.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Aluminum, total recoverable
236% over limit
Discharged 0.97400005 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
25% over limit
Discharged 37.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
%Effect Static Renewal 7Day Chronic Pimephales promelas
200% over limit
Discharged 75 % against a permitted limit of 25 % (MO MED)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
163% over limit
Discharged 0.97400005 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Solids, suspended percent removal
107% over limit
Discharged 69 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
BOD, 5-day, percent removal
67% over limit
Discharged 75 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
255% over limit
Discharged 1.03000005 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
178% over limit
Discharged 1.03000005 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2025
Copper, total recoverable
4% over limit
Discharged 0.00696 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
200% over limit
Discharged 0.86900004 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
135% over limit
Discharged 0.86900004 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 40 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2025
% Survival Static Renewal 96Hr Acute Pimephales promelas
8% over limit
Discharged 82.5 % against a permitted limit of 90 % (MEDN MN)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
95% over limit
Discharged 0.72300003 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Coliform, total general
113% over limit
Discharged 49 MPN/100mL against a permitted limit of 23 MPN/100mL (7 DA MED)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
149% over limit
Discharged 0.72300003 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Aluminum, total recoverable
229% over limit
Discharged 0.95400005 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
158% over limit
Discharged 0.95400005 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
July 31, 2025
Aluminum, total recoverable
243% over limit
Discharged 1.27000006 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
42% over limit
Discharged 42.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
338% over limit
Discharged 1.27000006 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
10% over limit
Discharged 0.00735 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
12% over limit
Discharged 33.6 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
June 30, 2025
Aluminum, total recoverable
151% over limit
Discharged 0.92900004 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
46% over limit
Discharged 43.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
220% over limit
Discharged 0.92900004 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Copper, total recoverable
4% over limit
Discharged 0.00695 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
92% over limit
Discharged 0.55700003 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
51% over limit
Discharged 0.55700003 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Aluminum, total recoverable
118% over limit
Discharged 0.63200003 mg/L against a permitted limit of 0.29000001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
8% over limit
Discharged 32.3 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Aluminum, total recoverable
71% over limit
Discharged 0.63200003 mg/L against a permitted limit of 0.37000002 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
March 31, 2025
% Survival Flow Through 96Hr Acute Pimephales promelas
61% over limit
Discharged 35 % against a permitted limit of 90 % (MEDN MN)
DMR, Limited - Numeric Violation
% Survival Static Renewal 96Hr Acute Pimephales promelas
61% over limit
Discharged 35 % against a permitted limit of 90 % (MEDN MN)
DMR, Limited - Numeric Violation
% Survival Static Renewal 96Hr Acute Pimephales promelas
50% over limit
Discharged 35 % against a permitted limit of 70 % (MINIMUM)
DMR, Limited - Numeric Violation
% Survival Flow Through 96Hr Acute Pimephales promelas
50% over limit
Discharged 35 % against a permitted limit of 70 % (MINIMUM)
DMR, Limited - Numeric Violation
Coliform, total general
113% over limit
Discharged 49 MPN/100mL against a permitted limit of 23 MPN/100mL (7 DA MED)
DMR, Limited - Numeric Violation
February 28, 2025
Coliform, total general
113% over limit
Discharged 49 MPN/100mL against a permitted limit of 23 MPN/100mL (7 DA MED)
DMR, Limited - Numeric Violation
January 31, 2025
Coliform, total general
243% over limit
Discharged 79 MPN/100mL against a permitted limit of 23 MPN/100mL (7 DA MED)
DMR, Limited - Numeric Violation
Copper, total recoverable
282% over limit
Discharged 0.0256 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Copper, total recoverable
71% over limit
Discharged 0.0256 mg/L against a permitted limit of 0.015 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Copper, total recoverable
30% over limit
Discharged 0.0087 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Solids, suspended percent removal
53% over limit
Discharged 77 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 40 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Coliform, total general
113% over limit
Discharged 49 MPN/100mL against a permitted limit of 23 MPN/100mL (7 DA MED)
DMR, Limited - Numeric Violation
Copper, total recoverable
16% over limit
Discharged 0.00779 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
3% over limit
Discharged 31 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, suspended percent removal
20% over limit
Discharged 82 % against a permitted limit of 85 % (MO AV MN)
DMR, Limited - Numeric Violation
Copper, total recoverable
51% over limit
Discharged 0.0101 mg/L against a permitted limit of 0.0067 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)