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United States Department of Agriculture (USDA) Forest Service

Federal facility (Sewerage Systems), Bristol, Tennessee. NPDES permit TN0020745, in force until Sep 30, 2027. Last 12 months: no values over a limit, 3 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (16 values), outfall INF1 form G monthly (2 values)
Renewal application due
Apr 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 4 of 24 reports late

Limits in force (23)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 9 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 8 mg/LMay–Oct001
Oxygen, dissolved [DO]daily minimumreport only (mg/L)May–Oct001
Oxygen, dissolved [DO]daily minimum≥ 8 mg/LMay–Oct001
pHdaily minimum≥ 6.5 SUall year001
pHdaily maximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Solids, settleabledaily maximum≤ 1 mL/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 2.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5.6 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
E. colimonthly average≤ 126 #/100mLall year001
E. colidaily maximum≤ 487 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 40 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF1

How strict are these limits?

Cited limits by parameter: Tennessee's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0020745 · MCP: https://passage-data.com/mcp