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Centerpoint Energy - Sigeco F. B. Culley Station

Electric Services, major discharger, Newburgh, Indiana. NPDES permit IN0002259, in force until Feb 29, 2028. Last 12 months: over a limit 9 times (last August 2026), 1 required value missing, 9 of 88 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 27 days after each period: outfall 000 form A monthly (26 values), outfall 001 form A monthly (45 values), outfall 001 form AQ quarterly (20 values), outfall 001 form TX twice a year (8 values), outfall 004 form A monthly (11 values), outfall 006 form A monthly (43 values), and 3 more forms
Renewal application due
Sep 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 96 reports late

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

Period endingParameterReportedLimitOver by
May 2026Silver total recoverable, daily maximum< 9 ug/L≤ 6.6 ug/L36%
May 2026Silver total recoverable, monthly average< 5 ug/L≤ 3.8 ug/L32%
June 2026Silver total recoverable, daily maximum< 9 ug/L≤ 6.6 ug/L36%
June 2026Silver total recoverable, monthly average9 ug/L≤ 3.8 ug/L137%
July 2026Silver total recoverable, daily maximum< 9 ug/L≤ 6.6 ug/L36%
July 2026Silver total recoverable, monthly average< 9 ug/L≤ 3.8 ug/L137%
July 2026Temperature, water deg. fahrenheit, daily maximum111 deg F≤ 110 deg F1%
August 2026Silver total recoverable, daily maximum< 9 ug/L≤ 6.6 ug/L36%
August 2026Silver total recoverable, monthly average< 4.5 ug/L≤ 3.8 ug/L18%

Limits in force (244)

ParameterStatisticLimitMonthsOutfall
Arsenic, total recoverablemonthly averagereport only (mg/L)all year000
Arsenic, total recoverabledaily maximumreport only (mg/L)all year000
Iron, total recoverablemonthly averagereport only (mg/L)all year000
Iron, total recoverabledaily maximumreport only (mg/L)all year000
Selenium, total recoverablemonthly averagereport only (mg/L)all year000
Selenium, total recoverabledaily maximumreport only (mg/L)all year000
Nickel, total recoverablemonthly averagereport only (mg/L)all year000
Nickel, total recoverabledaily maximumreport only (mg/L)all year000
Silver total recoverablemonthly averagereport only (ug/L)all year000
Silver total recoverabledaily maximumreport only (ug/L)all year000
Zinc, total recoverablemonthly averagereport only (mg/L)all year000
Zinc, total recoverabledaily maximumreport only (mg/L)all year000
Aluminum, total recoverablemonthly averagereport only (mg/L)all year000
Aluminum, total recoverabledaily maximumreport only (mg/L)all year000
Cadmium, total recoverablemonthly averagereport only (ug/L)all year000
Cadmium, total recoverabledaily maximumreport only (ug/L)all year000
Copper, total recoverablemonthly averagereport only (ug/L)all year000
Copper, total recoverabledaily maximumreport only (ug/L)all year000
Mercury, total recoverablemonthly averagereport only (ng/L)all year000
Mercury, total recoverabledaily maximumreport only (ng/L)all year000
Flowmonthly averagereport only (MGD)all year000
Flowmonthly averagereport only (MGD)all year000
Flowmonthly averagereport only (MGD)all year000
Flowdaily maximumreport only (MGD)all year000
Flowdaily maximumreport only (MGD)all year000
Flowdaily maximumreport only (MGD)all year000
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Dec001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Oct001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jun, Sep001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jan, Feb001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Mar001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Apr, Nov001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)Jul, Aug001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)May001
Temperature, water deg. fahrenheitdaily maximum≤ 60 deg FDec001
Temperature, water deg. fahrenheitdaily maximum≤ 81 deg FOct001
Temperature, water deg. fahrenheitdaily maximum≤ 90 deg FJun, Sep001
Temperature, water deg. fahrenheitdaily maximum≤ 53 deg FJan, Feb001
Temperature, water deg. fahrenheitdaily maximum≤ 63 deg FMar001
Temperature, water deg. fahrenheitdaily maximum≤ 73 deg FApr, Nov001
Temperature, water deg. fahrenheitdaily maximum≤ 92 deg FJul, Aug001
Temperature, water deg. fahrenheitdaily maximum≤ 83 deg FMay001
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year001
Temperature, water deg. fahrenheitdaily maximum≤ 110 deg Fall year001
Plant capacity fact. percent of capacitymonthly averagereport only (%)all year001
Chlorine, total residual [dsg. time]daily maximum≤ 120 min/dall year001
Chlorine, total residual [dsg. time]daily maximum≤ 120 min/dall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Cyanide, free [as free]monthly averagereport only (mg/L)all year001
Cyanide, free [as free]daily maximumreport only (mg/L)all year001
Chloride [as Cl]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Chloride [as Cl]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Chloride [as Cl]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Chloride [as Cl]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Sulfate, total [as SO4]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Sulfate, total [as SO4]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Sulfate, total [as SO4]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Sulfate, total [as SO4]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Fluoride, total [as F]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Fluoride, total [as F]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Fluoride, total [as F]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Fluoride, total [as F]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Arsenic, total recoverablemonthly averagereport only (mg/L)all year001
Arsenic, total recoverabledaily maximumreport only (mg/L)all year001
Iron, total recoverablemonthly averagereport only (ug/L)all year001
Iron, total recoverabledaily maximumreport only (ug/L)all year001
Selenium, total recoverablemonthly averagereport only (mg/L)all year001
Selenium, total recoverabledaily maximumreport only (mg/L)all year001
Boron, total [as B]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Boron, total [as B]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Boron, total [as B]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Boron, total [as B]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Nickel, total recoverablemonthly averagereport only (ug/L)all year001
Nickel, total recoverabledaily maximumreport only (ug/L)all year001
Silver total recoverablemonthly averagereport only (ug/L)all year001
Silver total recoverablemonthly average≤ 3.8 ug/Lall year001
Silver total recoverabledaily maximumreport only (ug/L)all year001
Silver total recoverabledaily maximum≤ 6.6 ug/Lall year001
Zinc, total recoverablemonthly averagereport only (mg/L)all year001
Zinc, total recoverabledaily maximumreport only (mg/L)all year001
Aluminum, total recoverablemonthly averagereport only (mg/L)all year001
Aluminum, total recoverabledaily maximumreport only (mg/L)all year001
Cadmium, total recoverablemonthly average≤ 2.1 ug/Lall year001
Cadmium, total recoverabledaily maximum≤ 4.2 ug/Lall year001
Copper, total recoverablemonthly average≤ 31 ug/Lall year001
Copper, total recoverabledaily maximum≤ 63 ug/Lall year001
Oxidants, total residualmonthly average< 60 ug/Lall year001
Oxidants, total residualdaily maximum< 60 ug/Lall year001
Temperature, length of excursionmonthly totalreport only (hr/mo)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly averagereport only (mg/L)all year001
Chlorine, total residualdaily maximum≤ .2 mg/Lall year001
Chlorine, total residualmonthly average< .06 mg/Lall year001
Chlorine, total residualdaily maximum< .06 mg/Lall year001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acute (alert, not enforceable)Apr001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acute (alert, not enforceable)Apr001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acute (alert, not enforceable)Feb, Aug001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMar, Sep001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteMar, Sep001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 7 tox chronic (alert, not enforceable)Apr001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 7 tox chronic (alert, not enforceable)Apr001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 7 tox chronic (alert, not enforceable)Feb, Aug001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 7 tox chronicMar, Sep001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 7 tox chronicMar, Sep001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acute (alert, not enforceable)Apr001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acute (alert, not enforceable)Apr001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acute (alert, not enforceable)Feb, Aug001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMar, Sep001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteMar, Sep001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 7 tox chronicApr001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 7 tox chronicApr001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 7 tox chronic (alert, not enforceable)Feb, Aug001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 7 tox chronicMar, Sep001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 7 tox chronicMar, Sep001
Bromide [as Br]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Bromide [as Br]monthly averagereport only (mg/L)Mar, Jun, Sep, Dec001
Bromide [as Br]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Bromide [as Br]daily maximumreport only (mg/L)Mar, Jun, Sep, Dec001
Mercury, total recoverablemonthly average≤ 12 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximum≤ 20 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Chlorination frequencydaily maximum≤ 4 occur/dall year001
Chlorination durationdaily maximum≤ 40 minall year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Month excursion time [min]cumulative totalreport only (hr)all year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year004
BOD, 5-day, 20 deg. Cdaily maximum≤ 45 mg/Lall year004
pHdaily minimum≥ 6 SUall year004
pHdaily maximum≤ 9 SUall year004
Solids, total suspendedmonthly average≤ 30 mg/Lall year004
Solids, total suspendeddaily maximum≤ 45 mg/Lall year004
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct004
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct004
Coliform, fecal generaldaily maximumreport only (#/100mL)Jan, Feb, Mar, Nov, Dec004
Coliform, fecal generaldaily maximum≤ 2000 #/100mLJan, Feb, Mar, Nov, Dec004
Flow, totalmonthly totalreport only (Mgal/mo)all year004
pHdaily maximumreport only (SU)Jun, Dec005
pHdaily maximumreport only (SU)Jun, Dec005
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec005
Solids, total suspendeddaily maximumreport only (mg/L)Jun, Dec005
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec005
Oil and grease, hexane extr methoddaily maximumreport only (mg/L)Jun, Dec005
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun, Dec005
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun, Dec005
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jun, Dec005
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jun, Dec005
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec005
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec005
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun, Dec005
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun, Dec005
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)Jun, Dec005
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)Jun, Dec005
Storm water flowevent totalreport only (MGD)Jun, Dec005
Storm water flowevent totalreport only (MGD)Jun, Dec005
pHdaily minimum≥ 6 SUall year006
pHdaily maximum≤ 9 SUall year006
Solids, total suspendedmonthly averagereport only (mg/L)all year006
Solids, total suspendeddaily maximumreport only (mg/L)all year006
Chloride [as Cl]monthly averagereport only (mg/L)all year006
Chloride [as Cl]daily maximumreport only (mg/L)all year006
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year006
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year006
Fluoride, total [as F]monthly averagereport only (mg/L)all year006
Fluoride, total [as F]daily maximumreport only (mg/L)all year006
Arsenic, total recoverablemonthly averagereport only (mg/L)all year006
Arsenic, total recoverabledaily maximumreport only (mg/L)all year006
Cobalt, total recoverablemonthly averagereport only (mg/L)all year006
Cobalt, total recoverabledaily maximumreport only (mg/L)all year006
Selenium, total recoverablemonthly averagereport only (mg/L)all year006
Selenium, total recoverabledaily maximumreport only (mg/L)all year006
Thallium, total recoverablemonthly averagereport only (mg/L)all year006
Thallium, total recoverabledaily maximumreport only (mg/L)all year006
Barium, total recoverablemonthly averagereport only (mg/L)all year006
Barium, total recoverabledaily maximumreport only (mg/L)all year006
Boron, total [as B]monthly averagereport only (mg/L)all year006
Boron, total [as B]daily maximumreport only (mg/L)all year006
Zinc, total recoverablemonthly averagereport only (mg/L)all year006
Zinc, total recoverabledaily maximumreport only (mg/L)all year006
Cadmium, total recoverablemonthly averagereport only (ug/L)all year006
Cadmium, total recoverabledaily maximumreport only (ug/L)all year006
Lead, total recoverablemonthly averagereport only (mg/L)all year006
Lead, total recoverabledaily maximumreport only (mg/L)all year006
Chromium, total recoverablemonthly averagereport only (mg/L)all year006
Chromium, total recoverabledaily maximumreport only (mg/L)all year006
Molybdenum, total recoverablemonthly averagereport only (mg/L)all year006
Molybdenum, total recoverabledaily maximumreport only (mg/L)all year006
Lithium, total [as Li]monthly averagereport only (mg/L)all year006
Lithium, total [as Li]daily maximumreport only (mg/L)all year006
Chromium, hexavalent dissolved [as Cr]monthly averagereport only (mg/L)all year006
Chromium, hexavalent dissolved [as Cr]daily maximumreport only (mg/L)all year006
Antimony, total recoverablemonthly averagereport only (mg/L)all year006
Antimony, total recoverabledaily maximumreport only (mg/L)all year006
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year006
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year006
Solids, total dissolvedmonthly averagereport only (mg/L)all year006
Solids, total dissolveddaily maximumreport only (mg/L)all year006
Mercury, total recoverablemonthly averagereport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec006
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec006
Flow, totalmonthly totalreport only (Mgal/mo)all year006
pHdaily minimum≥ 6 SUall year101
pHdaily maximum≤ 9 SUall year101
Solids, total suspendedmonthly average≤ 23 mg/Lall year101
Solids, total suspendeddaily maximum≤ 74 mg/Lall year101
Oil and grease, hexane extr methodmonthly average≤ 8 mg/Lall year101
Oil and grease, hexane extr methoddaily maximum≤ 11 mg/Lall year101
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun, Dec101
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)Jun, Dec101
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jun, Dec101
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)Jun, Dec101
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec101
Phosphorus, total [as P]daily maximumreport only (mg/L)Jun, Dec101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year101
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun, Dec101
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)Jun, Dec101
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)Jun, Dec101
Chemical Oxygen Demand [COD]daily maximumreport only (mg/L)Jun, Dec101
pHdaily minimum≥ 6 SUall year201
pHdaily maximum≤ 9 SUall year201
Solids, total suspendedmonthly average≤ 30 mg/Lall year201
Solids, total suspendeddaily maximum≤ 70 mg/Lall year201
Oil and grease, hexane extr methodmonthly average≤ 15 mg/Lall year201
Oil and grease, hexane extr methoddaily maximum≤ 20 mg/Lall year201
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year201
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year201
pHdaily minimum≥ 6 SUall year401
pHdaily maximum≤ 9 SUall year401
Solids, total suspendedmonthly average≤ 30 mg/Lall year401
Solids, total suspendeddaily maximum≤ 100 mg/Lall year401
Oil and grease, hexane extr methodmonthly average≤ 15 mg/Lall year401
Oil and grease, hexane extr methoddaily maximum≤ 20 mg/Lall year401
Iron, total recoverablemonthly average≤ 1 mg/Lall year401
Iron, total recoverabledaily maximum≤ 1 mg/Lall year401
Copper, total recoverablemonthly average≤ 1 mg/Lall year401
Copper, total recoverabledaily maximum≤ 1 mg/Lall year401
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year401
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year401

How strict are these limits?

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

Same industry: the 30 Electric Services permits in Indiana.

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