UPPER MORELAND HATBORO STP
NPDES ID: PA0025976
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, 12 reporting violations.
Violations
May 31, 2026
Cyanide, free available
86% over limit
Discharged 0.253786 kg/d against a permitted limit of 0.1362 kg/d (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, free available
175% over limit
Discharged 0.014 mg/L against a permitted limit of 0.0051 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, free available
77% over limit
Discharged 0.014 mg/L against a permitted limit of 0.0079 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, free available
19% over limit
Discharged 0.253786 kg/d against a permitted limit of 0.21338 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Chlorine, total residual
25% over limit
Discharged 0.06 mg/L against a permitted limit of 0.048 mg/L (MO AVG)
DMR, Limited - Numeric Violation
March 31, 2026
Antimony, total [as Sb]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Solids, total dissolved
0% over limit
Discharged 0 mg/L against a permitted limit of 1000 mg/L (QRTR AVG)
DMR, Limited - Overdue
Solids, total dissolved
0% over limit
Discharged 0 kg/d against a permitted limit of 0 kg/d (QRTR AVG)
DMR, Monitor Only - Overdue
Toxicity [chronic], Pimephales promelas [Fathead Minnow]
0% over limit
Discharged 0 toxic against a permitted limit of 0 toxic (DAILY MX)
DMR, Monitor Only - Overdue
TU Static 7Day Chronic Ceriodaphnia dubia
0% over limit
Discharged 0 toxic against a permitted limit of 1.3 toxic (DAILY MX)
DMR, Limited - Overdue
Static 7Day Chronic Pimephales Promelas
0% over limit
Discharged 0 toxic against a permitted limit of 0 toxic (DAILY MX)
DMR, Monitor Only - Overdue
Hexafluoropropylene oxide dimer acid (HFPO-DA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (INST MAX)
DMR, Monitor Only - Overdue
Perfluorooctanesulfonate
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (INST MAX)
DMR, Monitor Only - Overdue
Zinc, total [as Zn]
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (DAILY MX)
DMR, Monitor Only - Overdue
Perfluorobutanesulfonic acid (PFBS)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (INST MAX)
DMR, Monitor Only - Overdue
Toxicity [chronic], Ceriodaphnia dubia
0% over limit
Discharged 0 toxic against a permitted limit of 1.3 toxic (DAILY MX)
DMR, Limited - Overdue
Perfluorooctanoic acid (PFOA)
0% over limit
Discharged 0 mg/L against a permitted limit of 0 mg/L (INST MAX)
DMR, Monitor Only - Overdue
February 28, 2026
Cyanide, free available
371% over limit
Discharged 0.024 mg/L against a permitted limit of 0.0051 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Cyanide, free available
91% over limit
Discharged 0.408146 kg/d against a permitted limit of 0.21338 kg/d (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, free available
204% over limit
Discharged 0.024 mg/L against a permitted limit of 0.0079 mg/L (DAILY MX)
DMR, Limited - Numeric Violation
Cyanide, free available
200% over limit
Discharged 0.408146 kg/d against a permitted limit of 0.1362 kg/d (MO AVG)
DMR, Limited - Numeric Violation
December 31, 2025
Coliform, fecal general
130% over limit
Discharged 2300 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
September 30, 2025
Nitrogen, ammonia total [as N]
9% over limit
Discharged 1.53 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
Coliform, fecal general
120% over limit
Discharged 2200 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
June 30, 2025
Coliform, fecal general
820% over limit
Discharged 9200 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
January 31, 2025
Coliform, fecal general
980% over limit
Discharged 10800 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
December 31, 2024
TU Static 7Day Chronic Ceriodaphnia dubia
42% over limit
Discharged 1.8 toxic against a permitted limit of 1.27 toxic (DAILY MX)
DMR, Limited - Numeric Violation
November 30, 2024
Coliform, fecal general
250% over limit
Discharged 3500 MPN/100mL against a permitted limit of 1000 MPN/100mL (INST MAX)
DMR, Limited - Numeric Violation
Nitrogen, ammonia total [as N]
37% over limit
Discharged 5.75 mg/L against a permitted limit of 4.2 mg/L (MO AVG)
DMR, Limited - Numeric Violation
October 31, 2024
Nitrogen, ammonia total [as N]
11% over limit
Discharged 1.56 mg/L against a permitted limit of 1.4 mg/L (MO AVG)
DMR, Limited - Numeric Violation
First flagged
April 14, 2026 (4 months ago)
Last confirmed
August 15, 2026 (7 hours ago)