OAK BLUFF CONDOMINIUMS WWTF
NPDES ID: MO0107913
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: 18 reporting violations.
Violations
April 30, 2026
Solids, settleable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.0015 mg/L (DAILY MX)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.009 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (MO AVG)
DMR, Monitor Only - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.019 mg/L (DAILY MX)
DMR, Limited - Overdue
Chloride
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, settleable
0% over limit
Discharged 0 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
March 31, 2026
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (DAILY MX)
DMR, Monitor Only - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0 MGD (MO AVG)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (MINIMUM)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 12.1 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 4.6 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (MAXIMUM)
DMR, Limited - Overdue
Solids, settleable
530% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, settleable
320% over limit
Discharged 0.0063 mg/L against a permitted limit of 0.0015 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Solids, settleable
340% over limit
Discharged 0.0044 mg/L against a permitted limit of 0.001 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Solids, settleable
193% over limit
Discharged 0.0044 mg/L against a permitted limit of 0.0015 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
December 31, 2025
Chlorine, total residual
400% over limit
Discharged 40 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
135% over limit
Discharged 40 mg/L against a permitted limit of 17 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
September 30, 2025
Chlorine, total residual
275% over limit
Discharged 30 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
76% over limit
Discharged 30 mg/L against a permitted limit of 17 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
March 31, 2025
Nitrogen, ammonia total [as N]
132% over limit
Discharged 10.65 mg/L against a permitted limit of 4.6 mg/L (MO AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
Limit violation
Discharged 38.75 mg/L against a permitted limit of 30 mg/L (WKLY AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
Limit violation
Discharged 38.75 mg/L against a permitted limit of 20 mg/L (MO AVG)
DMR, Limited - Numeric Violation
September 30, 2024
Chlorine, total residual
775% over limit
Discharged 70 mg/L against a permitted limit of 8 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Chlorine, total residual
312% over limit
Discharged 70 mg/L against a permitted limit of 17 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (23 days ago)