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Steuben Lakes RWD

Sewage treatment plant, major discharger, Angola, Indiana. NPDES permit IN0061557, in force until Mar 31, 2028. Last 12 months: over a limit 9 times (last May 2026), 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (24 values)
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
11 values over a limit, 4 required values missing, 4 of 16 reports late

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

Period endingParameterReportedLimitOver by
February 2026Nitrogen, ammonia total [as N], daily maximum2.61 mg/L≤ 1.9 mg/L37%
March 2026Nitrogen, ammonia total [as N], daily maximum22.82 lb/d≤ 15.9 lb/d44%
March 2026Nitrogen, ammonia total [as N], daily maximum3.44 mg/L≤ 1.9 mg/L81%
April 2026Mercury, total recoverable, monthly average1.59 ng/L≤ 1.3 ng/L22%
April 2026Nitrogen, ammonia total [as N], daily maximum19.78 lb/d≤ 15.9 lb/d24%
April 2026Nitrogen, ammonia total [as N], daily maximum2.38 mg/L≤ 1.9 mg/L25%
May 2026Nitrogen, ammonia total [as N], daily maximum4.81 mg/L≤ 1.8 mg/L167%
May 2026Solids, total suspended, monthly average7.5 mg/L≤ 5 mg/L50%
May 2026Solids, total suspended, maximum weekly average15.78 mg/L≤ 7.5 mg/L110%

Limits in force (65)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily average minimum≥ 6.5 mg/LMay–Nov001
Oxygen, dissolved [DO]daily average minimum≥ 7 mg/LJan, Feb, Mar, Apr, Dec001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 5 mg/LMay–Nov001
Solids, total suspendedmaximum weekly average≤ 22.5 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 7.5 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 125.2 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 41.7 lb/dMay–Nov001
Solids, total suspendedmaximum weekly average≤ 187.8 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 62.6 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≤ .78 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ .83 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 1.8 mg/LMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 1.9 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 6.5 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 6.9 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 15 lb/dMay–Nov001
Nitrogen, ammonia total [as N]daily maximum≤ 15.9 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 acute (alert, not enforceable)Mar001
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acute (alert, not enforceable)Apr001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 2.2 tox chronic (alert, not enforceable)Mar001
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 2.2 tox chronic (alert, not enforceable)Apr001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acute (alert, not enforceable)Mar001
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acute (alert, not enforceable)Apr001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 2.2 tox chronic (alert, not enforceable)Mar001
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 2.2 tox chronic (alert, not enforceable)Apr001
Mercury, total recoverablemonthly average≤ 1.3 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximum≤ 3.2 ng/LFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverablemonthly average≤ .000011 lb/dFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximum≤ .000027 lb/dFeb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (ng/L)Feb, Apr, Jun, Aug, Oct, Dec001
Mercury, total recoverabledaily maximumreport only (lb/d)Feb, Apr, Jun, Aug, Oct, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 22.5 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 7.5 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 125.2 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41.7 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 187.8 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 62.6 lb/dMay–Nov001
Phosphorus, total percent removalmonthly average minimum≥ 80 %all year001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Copper, dry weightvaluereport only (mg/kg)Jun, DecPRT
Copper, dry weightvaluereport only (mg/kg)Jun, DecPRT
Cadmium, 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
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
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
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
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
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.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IN0061557 · MCP: https://passage-data.com/mcp