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Town of Alexandria

Sewage treatment plant, Alexandria, Tennessee. NPDES permit TN0021539, in force until Jul 31, 2027. Last 12 months: over a limit 46 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (35 values), outfall INF1 form G monthly (6 values)
Renewal application due
Feb 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
49 values over a limit, 4 required values missing, 4 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 46 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, total [as N], rolling average10512 lb/yr≤ 7502 lb/yr40%
October 2025Phosphorus, total [as P], rolling average3066 lb/yr≤ 1562 lb/yr96%
October 2025Solids, suspended percent removal, minimum average79.4 %≥ 85 %37%
October 2025Solids, suspended percent removal, daily minimum0 %≥ 40 %67%
October 2025Solids, total suspended, daily maximum57 mg/L≤ 45 mg/L27%
October 2025Solids, total suspended, weekly average185.4 lb/d≤ 100 lb/d85%
October 2025Solids, total suspended, weekly average57 mg/L≤ 40 mg/L43%
November 2025Nitrogen, ammonia total [as N], daily maximum3.85 mg/L≤ 2.8 mg/L38%
November 2025Nitrogen, ammonia total [as N], monthly average1.69 mg/L≤ 1.4 mg/L21%
November 2025Nitrogen, ammonia total [as N], weekly average3.85 mg/L≤ 2.1 mg/L83%
November 2025Nitrogen, total [as N], rolling average10172.55 lb/yr≤ 7502 lb/yr36%
November 2025Phosphorus, total [as P], rolling average2810.5 lb/yr≤ 1562 lb/yr80%
November 2025Solids, suspended percent removal, minimum average80 %≥ 85 %33%
December 2025Nitrogen, total [as N], rolling average9560.3 lb/yr≤ 7502 lb/yr27%
December 2025Phosphorus, total [as P], rolling average2562.3 lb/yr≤ 1562 lb/yr64%
January 2026Nitrogen, total [as N], rolling average9500.95 lb/yr≤ 7502 lb/yr27%
January 2026Phosphorus, total [as P], rolling average2419.95 lb/yr≤ 1562 lb/yr55%
February 2026Nitrogen, ammonia total [as N], weekly average2.39 mg/L≤ 2.1 mg/L14%
February 2026Nitrogen, total [as N], rolling average9198 lb/yr≤ 7502 lb/yr23%
February 2026Phosphorus, total [as P], rolling average2284.9 lb/yr≤ 1562 lb/yr46%
March 2026Nitrogen, total [as N], rolling average8395 lb/yr≤ 7502 lb/yr12%
March 2026Phosphorus, total [as P], rolling average2080 lb/yr≤ 1562 lb/yr33%
April 2026Nitrogen, total [as N], rolling average7701.5 lb/yr≤ 7502 lb/yr3%
April 2026Phosphorus, total [as P], rolling average2474.7 lb/yr≤ 1562 lb/yr58%
May 2026Nitrogen, ammonia total [as N], daily maximum2.22 mg/L≤ 1.4 mg/L59%
May 2026Nitrogen, ammonia total [as N], monthly average1.853 mg/L≤ .7 mg/L165%
May 2026Nitrogen, ammonia total [as N], monthly average1.865 lb/d≤ 1.8 lb/d4%
May 2026Nitrogen, ammonia total [as N], weekly average2.22 mg/L≤ 1.1 mg/L102%
May 2026Phosphorus, total [as P], rolling average1923.55 lb/yr≤ 1562 lb/yr23%
May 2026Solids, total suspended, weekly average42 mg/L≤ 40 mg/L5%
June 2026Nitrogen, ammonia total [as N], daily maximum2.15 mg/L≤ 1.4 mg/L54%
June 2026Nitrogen, ammonia total [as N], monthly average1.788 mg/L≤ .7 mg/L155%
June 2026Nitrogen, ammonia total [as N], weekly average2.15 mg/L≤ 1.1 mg/L95%
June 2026Phosphorus, total [as P], rolling average1861.5 lb/yr≤ 1562 lb/yr19%
July 2026Nitrogen, ammonia total [as N], monthly average.851 mg/L≤ .7 mg/L22%
July 2026Nitrogen, ammonia total [as N], weekly average1.18 mg/L≤ 1.1 mg/L7%
July 2026Phosphorus, total [as P], rolling average1752 lb/yr≤ 1562 lb/yr12%
July 2026Solids, suspended percent removal, minimum average81 %≥ 85 %27%
July 2026Solids, suspended percent removal, daily minimum37.5 %≥ 40 %4%
August 2026Nitrogen, ammonia total [as N], daily maximum2.35 mg/L≤ 1.4 mg/L68%
August 2026Nitrogen, ammonia total [as N], monthly average1.045 mg/L≤ .7 mg/L49%
August 2026Nitrogen, ammonia total [as N], weekly average2.35 mg/L≤ 1.1 mg/L114%
August 2026Phosphorus, total [as P], rolling average1679 lb/yr≤ 1562 lb/yr7%
September 2026Nitrogen, ammonia total [as N], daily maximum4 mg/L≤ 1.4 mg/L186%
September 2026Nitrogen, ammonia total [as N], monthly average1.845 mg/L≤ .7 mg/L164%
September 2026Nitrogen, ammonia total [as N], weekly average4 mg/L≤ 1.1 mg/L264%

Limits in force (51)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 40 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 75 lb/dall year001
Solids, total suspendedweekly average≤ 100 lb/dall year001
Solids, settleabledaily maximum≤ 1 mL/Lall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]rolling average≤ 7502 lb/yrall year001
Nitrogen, ammonia total [as N]monthly average≤ .7 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1.1 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 2.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 1.4 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1.8 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 3.5 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 2.8 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 5.3 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]rolling average≤ 1562 lb/yrall 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
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 941 #/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/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly 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≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 50 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 37.5 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 62.6 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous, percent removaldaily minimum≥ 40 %all year001
BOD, carbonaceous, percent removalminimum average≥ 85 %all year001
Solids, suspended percent removaldaily minimum≥ 40 %all year001
Solids, suspended percent removalminimum average≥ 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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Your permit document is the final word. As JSON: /api/v1/permits/TN0021539 · MCP: https://passage-data.com/mcp