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Washington WWTP

Sewage treatment plant, major discharger, Washington, Indiana. NPDES permit IN0025658, in force until Jun 30, 2028. Last 12 months: over a limit 12 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (23 values), outfall 003 form C monthly (4 values), outfall 006 form C monthly (4 values), outfall 009 form C monthly (4 values), outfall 010 form CP monthly (11 values)
Renewal application due
Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
42 values over a limit, 2 required values missing, 2 of 64 reports late

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

Period endingOutfallParameterReportedLimitOver by
April 2026010E. coli, colony forming units [CFU], daily maximum500 CFU/100mL≤ 235 CFU/100mL113%
April 2026010E. coli, colony forming units [CFU], monthly geometric mean383 CFU/100mL≤ 125 CFU/100mL206%
May 2026010E. coli, colony forming units [CFU], daily maximum1000 CFU/100mL≤ 235 CFU/100mL326%
May 2026010E. coli, colony forming units [CFU], monthly geometric mean455 CFU/100mL≤ 125 CFU/100mL264%
June 2026001Toxicity [chronic], Pimephales promelas [Fathead Minnow], maximum11.79 tox chronic≤ 1 tox chronic1079%
June 2026010E. coli, colony forming units [CFU], daily maximum600 CFU/100mL≤ 235 CFU/100mL155%
August 2026001E. coli, colony forming units [CFU], daily maximum500 CFU/100mL≤ 235 CFU/100mL113%
August 2026001E. coli, colony forming units [CFU], monthly geometric mean191 CFU/100mL≤ 125 CFU/100mL53%
August 2026001Nitrogen, ammonia total [as N], monthly average108.4 lb/d≤ 59.9 lb/d81%
August 2026001Nitrogen, ammonia total [as N], monthly average4.58 mg/L≤ 1.26 mg/L263%
August 2026001Nitrogen, ammonia total [as N], maximum weekly average156.51 lb/d≤ 89.9 lb/d74%
August 2026001Nitrogen, ammonia total [as N], maximum weekly average7.65 mg/L≤ 1.89 mg/L305%

Limits in force (74)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily average minimum≥ 6 mL/LMay–Nov001
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LJan, Feb, Mar, Apr, Dec001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 20 mg/LMay–Nov001
Solids, total suspendedmaximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 30 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 1189 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 951 lb/dMay–Nov001
Solids, total suspendedmaximum weekly average≤ 1903 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 1427 lb/dMay–Nov001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1.26 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 1.82 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 1.89 mg/LMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.73 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 59.9 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 86.6 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 89.9 lb/dMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 129.9 lb/dJan, Feb, Mar, Apr, Dec001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct001
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteJun001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteJul001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicJun001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1 tox chronicJul001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteJun001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteJul001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicJun001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox chronicJul001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1189 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 951 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1903 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1427 lb/dMay–Nov001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Durationmonthly totalreport only (hr/mo)all year003
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year003
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year003
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year003
Durationmonthly totalreport only (hr/mo)all year006
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year006
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year006
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year006
Durationmonthly totalreport only (hr/mo)all year009
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year009
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year009
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year009
pHdaily minimumreport only (SU)all year010
pHdaily maximumreport only (SU)all year010
Solids, total suspendedmonthly averagereport only (mg/L)all year010
Solids, total suspendeddaily maximumreport only (mg/L)all year010
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year010
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year010
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct010
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct010
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year010
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year010
Flow, totalmonthly totalreport only (Mgal/mo)all year010
Copper, dry weightvaluereport only (mg/kg)Jun, DecPRT
Cadmium, dry weightvaluereport only (mg/kg)Jun, DecPRT
Molybdenum, sludge, total, dry weight [as Mo]valuereport only (mg/kg)Jun, DecPRT
Zinc, sludge, total, dry weight [as Zn]valuereport only (mg/kg)Jun, DecPRT
Lead, sludge, total, dry weight [as Pb]valuereport only (mg/kg)Jun, DecPRT
Nickel, sludge, total, dry weight [as Ni]valuereport only (mg/kg)Jun, DecPRT
Mercury, sludge, total, dry weight [as Hg]valuereport only (mg/kg)Jun, DecPRT

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0025658 · MCP: https://passage-data.com/mcp