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Lowell Wastewater Treatment Plant

Sewage treatment plant, major discharger, Lowell, Indiana. NPDES permit IN0023621, in force until Dec 31, 2030. Last 12 months: over a limit 4 times (last August 2026), 5 required values missing, 7 of 36 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (23 values), outfall 004 form C monthly (4 values), outfall 102 form CP monthly (11 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 2 required values missing, 4 of 36 reports late

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

Period endingParameterReportedLimitOver by
July 2026Nitrogen, ammonia total [as N], monthly average2.305 mg/L≤ 1.6 mg/L44%
July 2026Nitrogen, ammonia total [as N], monthly average62.26 lb/d≤ 53.4 lb/d17%
July 2026Nitrogen, ammonia total [as N], maximum weekly average2.508 mg/L≤ 2.4 mg/L5%
August 2026Oxygen, dissolved [DO], daily average minimum5.3 mg/L≥ 6 mg/L12%

Limits in force (51)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily average minimum≥ 6 mg/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≤ 30 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 18 mg/LMay–Nov001
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 27 mg/LMay–Nov001
Solids, total suspendedmonthly average≤ 1001.4 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmonthly average≤ 600.8 lb/dMay–Nov001
Solids, total suspendedmaximum weekly average≤ 1502.1 lb/dJan, Feb, Mar, Apr, Dec001
Solids, total suspendedmaximum weekly average≤ 901.3 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≤ 1.6 mg/LMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.4 mg/LMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.7 mg/LJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 53.4 lb/dMay–Nov001
Nitrogen, ammonia total [as N]monthly average≤ 60.1 lb/dJan, Feb, Mar, Apr, Dec001
Nitrogen, ammonia total [as N]maximum weekly average≤ 80.1 lb/dMay–Nov001
Nitrogen, ammonia total [as N]maximum weekly average≤ 90.1 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
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 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≤ 22.5 mg/LMay–Nov001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 834.5 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 500.7 lb/dMay–Nov001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1335.2 lb/dJan, Feb, Mar, Apr, Dec001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 751.1 lb/dMay–Nov001
Flow, totalmonthly totalreport only (Mgal/mo)all year001
Durationmonthly totalreport only (hr/mo)all year004
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (Mgal)all year004
Precipitation, monthly accumulationmonthly totalreport only (in/mo)all year004
Discharge event observation [Visual Monitoring]monthly totalreport only (#/mo)all year004
pHdaily minimumreport only (SU)all year102
pHdaily maximumreport only (SU)all year102
Solids, total suspendedmonthly averagereport only (mg/L)all year102
Solids, total suspendeddaily maximumreport only (mg/L)all year102
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year102
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year102
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct102
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct102
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year102
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all year102
Flow, totalmonthly totalreport only (Mgal/mo)all year102

New limits from Jan 1, 2030

ParameterNew limitFromNew or tighterMedian, last 12 months× new limit
Toxicity [acute], Ceriodaphnia dubia, maximum1 tox acute (Jun)Jan 1, 2030new——
Toxicity [acute], Pimephales promelas [Fathead Minnow], maximum1 tox acute (Jun)Jan 1, 2030new——
Toxicity [chronic], Ceriodaphnia dubia, maximum1.1 tox chronic (Jun)Jan 1, 2030new——
Toxicity [chronic], Pimephales promelas [Fathead Minnow], maximum1.1 tox chronic (Jun)Jan 1, 2030new——
Toxicity [acute], Ceriodaphnia dubia, maximum1 tox acute (Jul)Feb 1, 2030new——
Toxicity [acute], Pimephales promelas [Fathead Minnow], maximum1 tox acute (Jul)Feb 1, 2030new——
Toxicity [chronic], Ceriodaphnia dubia, maximum1.1 tox chronic (Jul)Feb 1, 2030new——
Toxicity [chronic], Pimephales promelas [Fathead Minnow], maximum1.1 tox chronic (Jul)Feb 1, 2030new——

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/IN0023621 · MCP: https://passage-data.com/mcp