HIGH VISTA FALLS WWTP
NPDES ID: NC0089095
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: 15 effluent violations.
Violations
May 31, 2026
BOD, 5-day, 20 deg. C
107% over limit
Discharged 31 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
440% over limit
Discharged 27 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
90% over limit
Discharged 19 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
340% over limit
Discharged 44 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2000% over limit
Discharged 21 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
344% over limit
Discharged 22.175 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
4700% over limit
Discharged 1200 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
228% over limit
Discharged 45.891 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
April 30, 2026
BOD, 5-day, 20 deg. C
66% over limit
Discharged 16.6 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
380% over limit
Discharged 48 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
320% over limit
Discharged 21 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
47% over limit
Discharged 22 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
164% over limit
Discharged 66 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1580% over limit
Discharged 16.8 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
332% over limit
Discharged 21.6 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Nitrogen, ammonia total [as N]
2850% over limit
Discharged 29.5 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
540% over limit
Discharged 32 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
160% over limit
Discharged 26 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
715% over limit
Discharged 40.75 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
610% over limit
Discharged 71 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
167% over limit
Discharged 40 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
February 28, 2026
Nitrogen, ammonia total [as N]
1558% over limit
Discharged 16.575 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
880% over limit
Discharged 98 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
133% over limit
Discharged 35 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
480% over limit
Discharged 29 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
785% over limit
Discharged 44.25 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
145% over limit
Discharged 24.5 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
January 31, 2026
Solids, total suspended
1135% over limit
Discharged 61.75 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
503% over limit
Discharged 60.25 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
760% over limit
Discharged 86 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1443% over limit
Discharged 15.425 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
4700% over limit
Discharged 1200 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
833% over limit
Discharged 140 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
540% over limit
Discharged 32 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
748% over limit
Discharged 118.7012 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
December 31, 2025
BOD, 5-day, 20 deg. C
360% over limit
Discharged 69 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
624% over limit
Discharged 36.2 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1742% over limit
Discharged 18.42 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
700% over limit
Discharged 40 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
500% over limit
Discharged 60 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
171% over limit
Discharged 27.14 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
November 30, 2025
Nitrogen, ammonia total [as N]
330% over limit
Discharged 4.3 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
153% over limit
Discharged 12.65 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
78% over limit
Discharged 8.9 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
60% over limit
Discharged 16 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
October 31, 2025
Solids, total suspended
71% over limit
Discharged 8.56 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
60% over limit
Discharged 24 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
380% over limit
Discharged 24 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
16% over limit
Discharged 11.6 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
40% over limit
Discharged 14 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
8% over limit
Discharged 27 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
556% over limit
Discharged 6.56 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
September 30, 2025
BOD, 5-day, 20 deg. C
10% over limit
Discharged 10.975 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
66% over limit
Discharged 8.3 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
433% over limit
Discharged 5.325 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
16% over limit
Discharged 29 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
33% over limit
Discharged 20 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
70% over limit
Discharged 17 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
62% over limit
Discharged 8.075 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
August 31, 2025
Nitrogen, ammonia total [as N]
6% over limit
Discharged 1.0575 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
13% over limit
Discharged 5.625 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
2300% over limit
Discharged 600 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
448% over limit
Discharged 76.6931 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
July 31, 2025
Nitrogen, ammonia total [as N]
88% over limit
Discharged 9.4 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
2300% over limit
Discharged 600 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
33% over limit
Discharged 6.64 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
225% over limit
Discharged 3.246 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
686% over limit
Discharged 110.0186 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
June 30, 2025
Coliform, fecal MF, MFC broth, 44.5 C
6% over limit
Discharged 14.8016 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Numeric Violation
Solids, total suspended
60% over limit
Discharged 16 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
2300% over limit
Discharged 600 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
98% over limit
Discharged 9.9 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
62% over limit
Discharged 1.6225 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
May 31, 2025
Solids, total suspended
20% over limit
Discharged 12 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
940% over limit
Discharged 260 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
2% over limit
Discharged 1.0225 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Solids, total suspended
98% over limit
Discharged 9.875 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
April 30, 2025
Solids, total suspended
304% over limit
Discharged 20.2 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
73% over limit
Discharged 26 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Solids, total suspended
180% over limit
Discharged 28 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
1144% over limit
Discharged 12.44 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Coliform, fecal MF, MFC broth, 44.5 C
168% over limit
Discharged 67 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Numeric Violation
BOD, 5-day, 20 deg. C
86% over limit
Discharged 18.6 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
560% over limit
Discharged 33 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
August 31, 2024
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
Temperature, water deg. centigrade
0% over limit
Discharged 0 deg C against a permitted limit of 0 deg C (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Coliform, fecal MF, MFC broth, 44.5 C
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.045 MGD (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.028 mg/L (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Overdue
Coliform, fecal MF, MFC broth, 44.5 C
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Overdue
July 31, 2024
Coliform, fecal MF, MFC broth, 44.5 C
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 25 MPN/100mL (DAILY MX)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 9 SU (DAILY MX)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (DAILY MX)
DMR, Limited - Overdue
Chlorine, total residual
0% over limit
Discharged 0 mg/L against a permitted limit of 0.028 mg/L (DAILY MX)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (30DA AVG)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 15 mg/L (DAILY MX)
DMR, Limited - Overdue
BOD, 5-day, 20 deg. C
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (30DA AVG)
DMR, Limited - Overdue
pH
0% over limit
Discharged 0 SU against a permitted limit of 6 SU (DAILY MN)
DMR, Limited - Overdue
Flow, in conduit or thru treatment plant
0% over limit
Discharged 0 MGD against a permitted limit of 0.045 MGD (30DA AVG)
DMR, Limited - Overdue
Solids, total suspended
0% over limit
Discharged 0 mg/L against a permitted limit of 10 mg/L (DAILY MX)
DMR, Limited - Overdue
Temperature, water deg. centigrade
0% over limit
Discharged 0 deg C against a permitted limit of 0 deg C (DAILY MX)
DMR, Monitor Only - Overdue
Coliform, fecal MF, MFC broth, 44.5 C
0% over limit
Discharged 0 MPN/100mL against a permitted limit of 14 MPN/100mL (MO GEOMN)
DMR, Limited - Overdue
Oxygen, dissolved [DO]
0% over limit
Discharged 0 mg/L against a permitted limit of 5 mg/L (DAILY MN)
DMR, Limited - Overdue
Nitrogen, ammonia total [as N]
0% over limit
Discharged 0 mg/L against a permitted limit of 1 mg/L (30DA AVG)
DMR, Limited - Overdue
First flagged
April 14, 2026 (3 months ago)
Last confirmed
July 13, 2026 (24 days ago)