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Sewage treatment plant, major discharger, Bloomington, Indiana. NPDES permit IN0035718, in force until Aug 31, 2029. Last 12 months: over a limit once (last May 2026), 1 required value missing, 1 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| May 2026 | Nitrogen, ammonia total [as N], maximum weekly average | 305 lb/d | ≤ 288 lb/d | 6% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 10 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 15 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 1252 lb/d | all year |
| Solids, total suspended | maximum weekly average | ≤ 1878 lb/d | all year |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.9 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.3 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 4.4 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 188 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 363 lb/d | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 288 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 551 lb/d | Jan, Feb, Mar, Apr, Dec |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Nickel, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Nickel, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Nickel, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Nickel, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Zinc, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Zinc, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Zinc, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Zinc, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Cadmium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Cadmium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Cadmium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Cadmium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Lead, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Chromium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Chromium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Chromium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Chromium, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Copper, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Copper, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Copper, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Copper, total recoverable | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | Jun, Dec |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | Jun, Dec |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | Jun, Dec |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | Jun, Dec |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Mar, Sep |
| Toxicity [acute], Ceriodaphnia dubia | maximum | ≤ 1 tox acute (alert, not enforceable) | Mar, Sep |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic (alert, not enforceable) | Feb, Aug |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic (alert, not enforceable) | Mar, Sep |
| Toxicity [chronic], Ceriodaphnia dubia | maximum | ≤ 1 tox chronic (alert, not enforceable) | Mar, Sep |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Feb, Aug |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Mar, Sep |
| Toxicity [acute], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox acute (alert, not enforceable) | Mar, Sep |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic (alert, not enforceable) | Feb, Aug |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic (alert, not enforceable) | Mar, Sep |
| Toxicity [chronic], Pimephales promelas [Fathead Minnow] | maximum | ≤ 1 tox chronic (alert, not enforceable) | Mar, Sep |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Aug |
| Mercury, total recoverable | daily maximum | report only (ng/L) | Feb, Aug |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 15 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1252 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 1878 lb/d | all year |
| Phosphorus, total percent removal | monthly average minimum | report only (%) | May–Oct |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
Cited limits by parameter: Indiana's rules and the federal ones.
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On EPA ECHO: Facility report · DMR history
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