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Webb Creek Utility District

Sewage treatment plant, Gatlinburg, Tennessee. NPDES permit TN0055310, in force until Oct 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (34 values), outfall INF1 form G monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (50)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 10 mg/Lall year001
Solids, total suspendedweekly average≤ 15 mg/Lall year001
Solids, total suspendeddaily maximum≤ 20 mg/Lall year001
Solids, total suspendedmonthly average≤ 17 lb/dall year001
Solids, total suspendedweekly average≤ 25 lb/dall year001
Solids, settleabledaily maximum≤ 1 mL/Lall year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ .5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ .8 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4.2 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1.7 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 6.3 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .02 mg/Lall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 410 #/100mLall year001
SSO, Dry Weathermonthly total≤ 0 occur/moall year001
SSO, Wet Weathermonthly total≤ 0 occur/moall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 7.5 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 25 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 13 lb/dMay–Oct001
BOD, carbonaceous, percent removaldaily minimum≥ 40 %all year001
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removaldaily minimum≥ 40 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF1
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearINF1
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all yearINF1

How strict are these limits?

Cited limits by parameter: Tennessee'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/TN0055310 · MCP: https://passage-data.com/mcp