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Montour LLC

Electric Services, major discharger, Washingtonville, Pennsylvania. NPDES permit PA0008443, in force until Jul 31, 2031. Last 12 months: over a limit 2 times (last October 2025), 125 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 052 form A monthly (14 values), outfall 053 form A monthly (54 values), outfall 150 form A monthly (4 values), outfall 153 form A monthly (9 values), outfall 253 form A monthly (10 values), outfall 353 form A monthly (3 values), and 5 more forms
Last report on file
June 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 0 of 115 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
October 2025Solids, total suspended, daily maximum27.5 mg/L≤ 20 mg/L38%
October 2025Solids, total suspended, monthly average18.9 mg/L≤ 10 mg/L89%

Limits in force (128)

ParameterStatisticLimitMonthsOutfall
pHdaily maximumreport only (SU)all year004
Solids, total suspendeddaily maximumreport only (mg/L)all year004
Oil & Greasedaily maximumreport only (mg/L)all year004
Iron, total [as Fe]daily maximumreport only (mg/L)all year004
pHdaily minimum≥ 6 SUall year052
pHdaily maximum≤ 9 SUall year052
Solids, total suspendedmonthly average≤ 30 mg/Lall year052
Solids, total suspendeddaily maximum≤ 100 mg/Lall year052
Oil & Greasemonthly average≤ 15 mg/Lall year052
Oil & Greasedaily maximum≤ 20 mg/Lall year052
Boron, total [as B]monthly averagereport only (ug/L)all year052
Boron, total [as B]daily maximumreport only (ug/L)all year052
Boron, total [as B]instantaneous maximumreport only (ug/L)all year052
Copper, total [as Cu]monthly averagereport only (ug/L)all year052
Copper, total [as Cu]daily maximumreport only (ug/L)all year052
Copper, total [as Cu]instantaneous maximumreport only (ug/L)all year052
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year052
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year052
pHdaily minimum≥ 6 SUall year053
pHdaily maximum≤ 9 SUall year053
Oil & Greasemonthly average≤ 15 mg/Lall year053
Oil & Greasedaily maximum≤ 20 mg/Lall year053
Nitrogen, total [as N]monthly averagereport only (mg/L)all year053
Nitrogen, total [as N]monthly averagereport only (lb/d)all year053
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all year053
Nitrogen, ammonia total [as N]monthly averagereport only (lb/d)all year053
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year053
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year053
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year053
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year053
Phosphorus, total [as P]monthly averagereport only (mg/L)all year053
Phosphorus, total [as P]monthly averagereport only (lb/d)all year053
Chloride [as Cl]monthly averagereport only (mg/L)all year053
Chloride [as Cl]daily maximumreport only (mg/L)all year053
Chloride [as Cl]monthly averagereport only (lb/d)all year053
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year053
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year053
Sulfate, total [as SO4]monthly averagereport only (lb/d)all year053
Boron, total [as B]monthly average≤ 17.4 mg/Lall year053
Boron, total [as B]daily maximum≤ 34.8 mg/Lall year053
Cadmium, total [as Cd]monthly average≤ 4.6 ug/Lall year053
Cadmium, total [as Cd]daily maximum≤ 9.2 ug/Lall year053
Chromium, hexavalent [as Cr]monthly average≤ 35 ug/Lall year053
Chromium, hexavalent [as Cr]daily maximum≤ 70 ug/Lall year053
Copper, total [as Cu]monthly averagereport only (ug/L)all year053
Copper, total [as Cu]daily maximumreport only (ug/L)all year053
Iron, total [as Fe]monthly average≤ 5 mg/Lall year053
Iron, total [as Fe]daily maximum≤ 7.5 mg/Lall year053
Lead, total [as Pb]monthly averagereport only (mg/L)all year053
Lead, total [as Pb]daily maximumreport only (mg/L)all year053
Thallium, total [as Tl]monthly average≤ 2.9 ug/Lall year053
Thallium, total [as Tl]daily maximum≤ 5.8 ug/Lall year053
Silver, total [as Ag]monthly average≤ 8.1 ug/Lall year053
Silver, total [as Ag]daily maximum≤ 16.2 ug/Lall year053
Zinc, total [as Zn]monthly averagereport only (ug/L)all year053
Selenium, total [as Se]monthly average≤ 86.7 ug/Lall year053
Selenium, total [as Se]daily maximum≤ 173.4 ug/Lall year053
Polychlorinated biphenyls [PCBs]instantaneous maximum≤ 1.75 ug/Lall year053
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year053
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year053
Nitrogen, Totalmonthly totalreport only (lb)all year053
Nitrogen, Totalannual totalreport only (lb)all year053
Nitrogen, Totalmonthly totalreport only (lb)all year053
Nitrogen, Totalannual total≤ 72749 lball year053
Nitrogen, Ammonia Totalmonthly totalreport only (lb)all year053
Nitrogen, Ammonia Totalannual totalreport only (lb)all year053
Nitrogen, Nitrate Totalannual totalreport only (lb)all year053
Nitrogen, Kjeldahl Totalmonthly totalreport only (lb)all year053
Nitrogen, Kjeldahl Totalannual totalreport only (lb)all year053
Nitrite Plus Nitrate Totalmonthly totalreport only (lb)all year053
Phosphorus, Totalmonthly totalreport only (lb)all year053
Phosphorus, Totalannual totalreport only (lb)all year053
Phosphorus, Totalmonthly totalreport only (lb)all year053
Phosphorus, Totalannual total≤ 1200 lball year053
Perfluorooctanoic acid (PFOA)daily maximumreport only (mg/L)all year053
Perfluorooctanesulfonatedaily maximumreport only (mg/L)all year053
Perfluorobutanesulfonic acid (PFBS)daily maximumreport only (mg/L)all year053
Hexafluoropropylene oxide dimer acid (HFPO-DA)daily maximumreport only (mg/L)all year053
Solids, total dissolvedmonthly averagereport only (mg/L)all year053
Solids, total dissolveddaily maximumreport only (mg/L)all year053
Solids, total dissolvedmonthly averagereport only (lb/d)all year053
Bromide [as Br]monthly averagereport only (mg/L)all year053
Bromide [as Br]daily maximumreport only (mg/L)all year053
Bromide [as Br]monthly averagereport only (lb/d)all year053
Chromium, total [as Cr]monthly average≤ .2 mg/Lall year150
Chromium, total [as Cr]daily maximum≤ .2 mg/Lall year150
Zinc, total [as Zn]monthly average≤ 1 mg/Lall year150
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year150
Chromium, total [as Cr]annual average≤ .2 mg/Lall year151
Chromium, total [as Cr]daily maximum≤ .2 mg/Lall year151
Zinc, total [as Zn]annual average≤ 1 mg/Lall year151
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year151
Flow, in conduit or thru treatment plantannual averagereport only (MGD)all year151
Chlorine, free availabledaily maximum≤ .2 mg/Lall year151
Chlorine, free availableinstantaneous maximum≤ .5 mg/Lall year151
Chromium, trivalent [as Cr]annual average≤ .2 mg/Lall year152
Chromium, trivalent [as Cr]daily maximum≤ .2 mg/Lall year152
Chromium, total [as Cr]annual average≤ .2 mg/Lall year152
Chromium, total [as Cr]daily maximum≤ .2 mg/Lall year152
Zinc, total [as Zn]annual average≤ 1 mg/Lall year152
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year152
Flow, in conduit or thru treatment plantannual averagereport only (MGD)all year152
Chlorine, free availabledaily maximum≤ .2 mg/Lall year152
Chlorine, free availableinstantaneous maximum≤ .5 mg/Lall year152
pHdaily minimum≥ 6 SUall year153
pHdaily maximum≤ 9 SUall year153
Solids, total suspendedmonthly average≤ 30 mg/Lall year153
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year153
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year153
Chlorine, total residualmonthly averagereport only (mg/L)all year153
Coliform, fecal generalgeometric mean≤ 200 #/100mLMay–Sep153
Coliform, fecal generalgeometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec153
Coliform, fecal generalinstantaneous maximum≤ 1000 #/100mLMay–Sep153
Coliform, fecal generalinstantaneous maximum≤ 10000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec153
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year153
Solids, total suspendedmonthly average≤ 10 mg/Lall year253
Solids, total suspendeddaily maximum≤ 20 mg/Lall year253
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year253
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year253
Arsenic, total [as As]monthly averagereport only (ug/L)all year253
Arsenic, total [as As]daily maximumreport only (ug/L)all year253
Selenium, total [as Se]monthly average≤ 3.4 mg/Lall year253
Selenium, total [as Se]daily maximum≤ 5.3 mg/Lall year253
Mercury, total [as Hg]monthly average≤ .027 mg/Lall year253
Mercury, total [as Hg]daily maximum≤ .043 mg/Lall year253
Solids, total suspendedmonthly average≤ 30 mg/Lall year353
Solids, total suspendeddaily maximum≤ 100 mg/Lall year353
Solids, total suspendedinstantaneous maximum≤ 125 mg/Lall year353

New limits from Aug 1, 2029

ParameterNew limitFromNew or tighterMedian, last 12 months× new limit
Copper, total [as Cu], daily maximum outfall 05361.2 ug/LAug 1, 2029new24.4 ug/L (9 values)0.399×
Copper, total [as Cu], monthly average outfall 05339.2 ug/LAug 1, 2029new17.6 ug/L (9 values)0.449×
Zinc, total [as Zn], daily maximum outfall 053524 ug/LAug 1, 2029new——
Zinc, total [as Zn], monthly average outfall 053336 ug/LAug 1, 2029new——
Arsenic, total [as As], daily maximum outfall 45311 ug/LJul 1, 2030new——
Arsenic, total [as As], quarterly average outfall 4538 ug/LJul 1, 2030new——
Mercury, total [as Hg], daily maximum outfall 453788 ug/LJul 1, 2030new——
Mercury, total [as Hg], quarterly average outfall 453356 ug/LJul 1, 2030new——

How strict are these limits?

Cited limits by parameter: Pennsylvania's rules and the federal ones.

Same industry: the 63 Electric Services permits in Pennsylvania.

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