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Sewerage Systems, Lexington, Ohio. NPDES permit OH0138509, in force until Sep 30, 2027. Last 12 months: over a limit 82 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], monthly average | .2 | ≤ .064 kg/d | 213% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 6 | ≤ 1 mg/L | 500% |
| October 2025 | Nitrogen, ammonia total [as N], weekly maximum | .2 | ≤ .097 kg/d | 106% |
| October 2025 | Nitrogen, ammonia total [as N], weekly maximum | 6 | ≤ 1.5 mg/L | 300% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | .2 | ≤ .19 kg/d | 5% |
| November 2025 | Nitrogen, ammonia total [as N], monthly average | 6 | ≤ 3 mg/L | 100% |
| November 2025 | Nitrogen, ammonia total [as N], weekly maximum | 6 | ≤ 4.5 mg/L | 33% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | .62 | ≤ .19 kg/d | 226% |
| December 2025 | Nitrogen, ammonia total [as N], monthly average | 3.9 | ≤ 3 mg/L | 30% |
| December 2025 | Nitrogen, ammonia total [as N], weekly maximum | .62 | ≤ .29 kg/d | 114% |
| December 2025 | Solids, total suspended, monthly average | 30 | ≤ 12 mg/L | 150% |
| December 2025 | Solids, total suspended, monthly average | 4.8 | ≤ .773 kg/d | 521% |
| December 2025 | Solids, total suspended, weekly maximum | 30 | ≤ 18 mg/L | 67% |
| December 2025 | Solids, total suspended, weekly maximum | 4.8 | ≤ 1.16 kg/d | 314% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 64 | ≤ 10 mg/L | 540% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 9.4 | ≤ .64 kg/d | 1369% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 64 | ≤ 15 mg/L | 327% |
| January 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 9.4 | ≤ .97 kg/d | 869% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 16.8 | ≤ 3 mg/L | 460% |
| January 2026 | Nitrogen, ammonia total [as N], monthly average | 2.48 | ≤ .19 kg/d | 1205% |
| January 2026 | Nitrogen, ammonia total [as N], weekly maximum | 16.8 | ≤ 4.5 mg/L | 273% |
| January 2026 | Nitrogen, ammonia total [as N], weekly maximum | 2.48 | ≤ .29 kg/d | 755% |
| January 2026 | Solids, total suspended, monthly average | 14 | ≤ 12 mg/L | 17% |
| January 2026 | Solids, total suspended, monthly average | 2.1 | ≤ .773 kg/d | 172% |
| January 2026 | Solids, total suspended, weekly maximum | 2.1 | ≤ 1.16 kg/d | 81% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 3.8 | ≤ .64 kg/d | 494% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 67 | ≤ 10 mg/L | 570% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 3.8 | ≤ .97 kg/d | 292% |
| February 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 67 | ≤ 15 mg/L | 347% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 1.11 | ≤ .19 kg/d | 484% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 19.6 | ≤ 3 mg/L | 553% |
| February 2026 | Nitrogen, ammonia total [as N], weekly maximum | 1.11 | ≤ .29 kg/d | 283% |
| February 2026 | Nitrogen, ammonia total [as N], weekly maximum | 19.6 | ≤ 4.5 mg/L | 336% |
| February 2026 | Solids, total suspended, monthly average | 2.3 | ≤ .773 kg/d | 198% |
| February 2026 | Solids, total suspended, monthly average | 41 | ≤ 12 mg/L | 242% |
| February 2026 | Solids, total suspended, weekly maximum | 2.3 | ≤ 1.16 kg/d | 98% |
| February 2026 | Solids, total suspended, weekly maximum | 41 | ≤ 18 mg/L | 128% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 5.6 | ≤ .64 kg/d | 775% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 74 | ≤ 10 mg/L | 640% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 5.6 | ≤ .97 kg/d | 477% |
| March 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 74 | ≤ 15 mg/L | 393% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 3.07 | ≤ .19 kg/d | 1516% |
| March 2026 | Nitrogen, ammonia total [as N], monthly average | 40.5 | ≤ 3 mg/L | 1250% |
| March 2026 | Nitrogen, ammonia total [as N], weekly maximum | 3.07 | ≤ .29 kg/d | 959% |
| March 2026 | Nitrogen, ammonia total [as N], weekly maximum | 40.5 | ≤ 4.5 mg/L | 800% |
| March 2026 | Solids, total suspended, monthly average | 3.8 | ≤ .773 kg/d | 392% |
| March 2026 | Solids, total suspended, monthly average | 50 | ≤ 12 mg/L | 317% |
| March 2026 | Solids, total suspended, weekly maximum | 3.8 | ≤ 1.16 kg/d | 228% |
| March 2026 | Solids, total suspended, weekly maximum | 50 | ≤ 18 mg/L | 178% |
| April 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 11 | ≤ .64 kg/d | 1619% |
| April 2026 | BOD, carbonaceous [5 day, 20 C], monthly average | 78 | ≤ 10 mg/L | 680% |
| April 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 11 | ≤ .97 kg/d | 1034% |
| April 2026 | BOD, carbonaceous [5 day, 20 C], weekly maximum | 78 | ≤ 15 mg/L | 420% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 48.8 | ≤ 3 mg/L | 1527% |
| April 2026 | Nitrogen, ammonia total [as N], monthly average | 6.65 | ≤ .19 kg/d | 3400% |
| April 2026 | Nitrogen, ammonia total [as N], weekly maximum | 48.8 | ≤ 4.5 mg/L | 984% |
| April 2026 | Nitrogen, ammonia total [as N], weekly maximum | 6.65 | ≤ .29 kg/d | 2193% |
| April 2026 | Solids, total suspended, monthly average | 48 | ≤ 12 mg/L | 300% |
| April 2026 | Solids, total suspended, monthly average | 6.5 | ≤ .773 kg/d | 741% |
| April 2026 | Solids, total suspended, weekly maximum | 48 | ≤ 18 mg/L | 167% |
| April 2026 | Solids, total suspended, weekly maximum | 6.5 | ≤ 1.16 kg/d | 460% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | .63 | ≤ .064 kg/d | 884% |
| May 2026 | Nitrogen, ammonia total [as N], monthly average | 7.9 | ≤ 1 mg/L | 690% |
| May 2026 | Nitrogen, ammonia total [as N], weekly maximum | .63 | ≤ .097 kg/d | 549% |
| May 2026 | Nitrogen, ammonia total [as N], weekly maximum | 7.9 | ≤ 1.5 mg/L | 427% |
| May 2026 | Solids, total suspended, monthly average | 2.2 | ≤ .773 kg/d | 185% |
| May 2026 | Solids, total suspended, monthly average | 28 | ≤ 12 mg/L | 133% |
| May 2026 | Solids, total suspended, weekly maximum | 2.2 | ≤ 1.16 kg/d | 90% |
| May 2026 | Solids, total suspended, weekly maximum | 28 | ≤ 18 mg/L | 56% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 1.07 | ≤ .064 kg/d | 1572% |
| June 2026 | Nitrogen, ammonia total [as N], monthly average | 14.2 | ≤ 1 mg/L | 1320% |
| June 2026 | Nitrogen, ammonia total [as N], weekly maximum | 1.07 | ≤ .097 kg/d | 1003% |
| June 2026 | Nitrogen, ammonia total [as N], weekly maximum | 14.2 | ≤ 1.5 mg/L | 847% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | .26 | ≤ .064 kg/d | 306% |
| July 2026 | Nitrogen, ammonia total [as N], monthly average | 4 | ≤ 1 mg/L | 300% |
| July 2026 | Nitrogen, ammonia total [as N], weekly maximum | .26 | ≤ .097 kg/d | 168% |
| July 2026 | Nitrogen, ammonia total [as N], weekly maximum | 4 | ≤ 1.5 mg/L | 167% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | .27 | ≤ .064 kg/d | 322% |
| August 2026 | Nitrogen, ammonia total [as N], monthly average | 1.8 | ≤ 1 mg/L | 80% |
| August 2026 | Nitrogen, ammonia total [as N], weekly maximum | .27 | ≤ .097 kg/d | 178% |
| August 2026 | Nitrogen, ammonia total [as N], weekly maximum | 1.8 | ≤ 1.5 mg/L | 20% |
| August 2026 | Solids, total suspended, monthly average | .89 | ≤ .773 kg/d | 15% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | report only (deg C) | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | report only (deg C) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 12 mg/L | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 18 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ .773 kg/d | all year | 001 |
| Solids, total suspended | weekly maximum | ≤ 1.16 kg/d | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 3 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 1.5 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ 4.5 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .064 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .19 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ .097 kg/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly maximum | ≤ .29 kg/d | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrite + Nitrate total [as N] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Nitrite + Nitrate total [as N] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | Mar, Jun, Aug, Dec | 001 |
| Turbidity [severity] | monthly average | report only (severity) | all year | 001 |
| Turbidity [severity] | daily maximum | report only (severity) | all year | 001 |
| E. coli, MTEC-MF | monthly geometric mean | ≤ 126 MPN/100mL | May–Oct | 001 |
| E. coli, MTEC-MF | weekly geometric mean | ≤ 284 MPN/100mL | May–Oct | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .038 mg/L | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ 15 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ .64 kg/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly maximum | ≤ .97 kg/d | all year | 001 |
| Biosolids weight indluding admixtures | monthly average | report only (dry ton) | Dec | 586 |
| Biosolids weight indluding admixtures | daily maximum | report only (dry ton) | Dec | 586 |
| Sludge waste from secondary clarifiers | monthly average | report only (gal) | Dec | 588 |
| Sludge waste from secondary clarifiers | daily maximum | report only (gal) | Dec | 588 |
Cited limits by parameter: Ohio's rules and the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/OH0138509 · MCP: https://passage-data.com/mcp