MARY MOTHER OF THE CHURCH ABBEY STP
NPDES ID: VA0024163
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
Chlorine, total residual
17% over limit
Discharged 2.8 mg/L against a permitted limit of 2.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
April 30, 2026
Chlorine, total residual
13% over limit
Discharged 2.7 mg/L against a permitted limit of 2.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
March 31, 2026
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
Chlorine, total residual
17% over limit
Discharged 2.8 mg/L against a permitted limit of 2.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
February 28, 2026
Chlorine, total residual
46% over limit
Discharged 3.5 mg/L against a permitted limit of 2.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
pH
0% over limit
Discharged 5.9 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
2883% over limit
Discharged 895 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1009% over limit
Discharged 499 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
1563% over limit
Discharged 499 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
1889% over limit
Discharged 895 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
8% over limit
Discharged 48.5 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
62% over limit
Discharged 48.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
44% over limit
Discharged 43.3 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Solids, total suspended
67% over limit
Discharged 50 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
35% over limit
Discharged 60.8 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
11% over limit
Discharged 50 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
103% over limit
Discharged 60.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Chlorine, total residual
8% over limit
Discharged 2.6 mg/L against a permitted limit of 2.4 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
127% over limit
Discharged 68 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
51% over limit
Discharged 68 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
October 31, 2025
BOD, 5-day, 20 deg. C
4% over limit
Discharged 46.8 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
56% over limit
Discharged 46.8 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
155% over limit
Discharged 76.5 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
70% over limit
Discharged 76.5 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
September 30, 2025
Solids, total suspended
62% over limit
Discharged 48.7 mg/L against a permitted limit of 30 mg/L (MO 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 (MO AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 48.7 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
June 30, 2025
BOD, 5-day, 20 deg. C
7% over limit
Discharged 32.1 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
E. coli
209% over limit
Discharged 389 MPN/100mL against a permitted limit of 126 MPN/100mL (GEO MEAN)
DMR, Limited - Numeric Violation
Solids, total suspended
8% over limit
Discharged 32.4 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
May 31, 2025
BOD, 5-day, 20 deg. C
7% over limit
Discharged 32 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
November 30, 2024
Chlorine, total residual
5% over limit
Discharged 2.1 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
4% over limit
Discharged 2.075 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
August 31, 2024
Chlorine, total residual
5% over limit
Discharged 2.1 mg/L against a permitted limit of 2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
July 31, 2024
Solids, total suspended
65% over limit
Discharged 74.3 mg/L against a permitted limit of 45 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
148% over limit
Discharged 74.3 mg/L against a permitted limit of 30 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)