Passage Data · Check a report · Use it from your AI
Sewage treatment plant, major discharger, Delphi, Indiana. NPDES permit IN0021377, in force until Sep 30, 2031. Last 12 months: over a limit 13 times (last August 2026), 1 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Phosphorus, total [as P], monthly average | 2.87 mg/L | ≤ 1 mg/L | 187% |
| November 2025 | Phosphorus, total [as P], monthly average | 2.586 mg/L | ≤ 1 mg/L | 159% |
| December 2025 | Phosphorus, total [as P], monthly average | 3.212 mg/L | ≤ 1 mg/L | 221% |
| January 2026 | Phosphorus, total [as P], monthly average | 3.173 mg/L | ≤ 1 mg/L | 217% |
| February 2026 | Phosphorus, total [as P], monthly average | 3.193 mg/L | ≤ 1 mg/L | 219% |
| March 2026 | Phosphorus, total [as P], monthly average | 2.178 mg/L | ≤ 1 mg/L | 118% |
| April 2026 | Phosphorus, total [as P], monthly average | 2.153 mg/L | ≤ 1 mg/L | 115% |
| May 2026 | Phosphorus, total [as P], monthly average | 1.752 mg/L | ≤ 1 mg/L | 75% |
| June 2026 | E. coli, colony forming units [CFU], daily maximum | 2420 CFU/100mL | ≤ 235 CFU/100mL | 930% |
| June 2026 | Phosphorus, total [as P], monthly average | 2.048 mg/L | ≤ 1 mg/L | 105% |
| July 2026 | Phosphorus, total [as P], monthly average | 1.141 mg/L | ≤ 1 mg/L | 14% |
| August 2026 | Nitrogen, ammonia total [as N], maximum weekly average | 5.674 mg/L | ≤ 3.5 mg/L | 62% |
| August 2026 | Nitrogen, ammonia total [as N], maximum weekly average | 52.698 lb/d | ≤ 43.8 lb/d | 20% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | May–Nov | 001 |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 4 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 376 lb/d | all year | 001 |
| Solids, total suspended | maximum weekly average | ≤ 563 lb/d | all year | 001 |
| Oil and grease, hexane extr method | monthly average | report only (mg/L) | all year | 001 |
| Oil and grease, hexane extr method | maximum weekly average | report only (mg/L) | all year | 001 |
| Oil and grease, hexane extr method | monthly average | report only (lb/d) | all year | 001 |
| Oil and grease, hexane extr method | maximum weekly average | report only (lb/d) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | monthly average | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.3 mg/L | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 4.6 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 3.5 mg/L | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 6.9 mg/L | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 28.8 lb/d | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 57.6 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 43.8 lb/d | May–Nov | 001 |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 86.4 lb/d | Jan, Feb, Mar, Apr, Dec | 001 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct | 001 |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct | 001 |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct | 001 |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 313 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 501 lb/d | all year | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| Copper, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Copper, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Cadmium, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Cadmium, dry weight | value | report only (mg/kg) | Jun, Dec | PRT |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | Jun, Dec | PRT |
| Molybdenum, sludge, total, dry weight [as Mo] | value | report only (mg/kg) | Jun, Dec | PRT |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | Jun, Dec | PRT |
| Zinc, sludge, total, dry weight [as Zn] | value | report only (mg/kg) | Jun, Dec | PRT |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | Jun, Dec | PRT |
| Lead, sludge, total, dry weight [as Pb] | value | report only (mg/kg) | Jun, Dec | PRT |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | Jun, Dec | PRT |
| Nickel, sludge, total, dry weight [as Ni] | value | report only (mg/kg) | Jun, Dec | PRT |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | Jun, Dec | PRT |
| Mercury, sludge, total, dry weight [as Hg] | value | report only (mg/kg) | Jun, Dec | PRT |
Cited limits by parameter: Indiana's rules and the federal ones.
· Save this facility as a site · Superfund sites nearby · Your permits on one board
On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/IN0021377 · MCP: https://passage-data.com/mcp