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Bloomington N (Blucher Poole)

Sewage treatment plant, major discharger, Bloomington, Indiana. NPDES permit IN0035726, in force until Aug 31, 2029. Last 12 months: over a limit once (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (23 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], maximum weekly average5.104 mg/L≤ 2.25 mg/L127%

Limits in force (44)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]daily average minimum≥ 5 mg/LMay–Nov
Oxygen, dissolved [DO]daily average minimum≥ 4 mg/LJan, Feb, Mar, Apr, Dec
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 24 mg/LMay–Nov
Solids, total suspendedmaximum weekly average≤ 45 mg/LJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 36 mg/LMay–Nov
Solids, total suspendedmonthly average≤ 1502 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmonthly average≤ 1202 lb/dMay–Nov
Solids, total suspendedmaximum weekly average≤ 2253 lb/dJan, Feb, Mar, Apr, Dec
Solids, total suspendedmaximum weekly average≤ 1803 lb/dMay–Nov
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, total [as N]monthly averagereport only (lb/d)all year
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 2.7 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 2.25 mg/LMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 4 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 75 lb/dMay–Nov
Nitrogen, ammonia total [as N]monthly average≤ 135 lb/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]maximum weekly average≤ 113 lb/dMay–Nov
Nitrogen, ammonia total [as N]maximum weekly average≤ 200 lb/dJan, Feb, Mar, Apr, Dec
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]monthly averagereport only (lb/d)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
E. coli, colony forming units [CFU]monthly geometric mean≤ 125 CFU/100mLApr–Oct
E. coli, colony forming units [CFU]daily maximum≤ 235 CFU/100mLApr–Oct
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteAug
Toxicity [acute], Ceriodaphnia dubiamaximum≤ 1 tox acuteAug
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1.2 tox chronicAug
Toxicity [chronic], Ceriodaphnia dubiamaximum≤ 1.2 tox chronicAug
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteAug
Toxicity [acute], Pimephales promelas [Fathead Minnow]maximum≤ 1 tox acuteAug
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1.2 tox chronicAug
Toxicity [chronic], Pimephales promelas [Fathead Minnow]maximum≤ 1.2 tox chronicAug
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/LJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 30 mg/LMay–Nov
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1252 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1001 lb/dMay–Nov
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 2003 lb/dJan, Feb, Mar, Apr, Dec
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 1502 lb/dMay–Nov
Flow, totalmonthly totalreport only (Mgal/mo)all year

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/IN0035726 · MCP: https://passage-data.com/mcp