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Limestone Water Utility Operating Company, LLC

Sewerage Systems, Franklin, Tennessee. NPDES permit TN0027278, in force until Nov 30, 2026. Last 12 months: over a limit 52 times (last September 2026), 9 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (41 values), outfall INF1 form G monthly (6 values)
Renewal application due
Jun 3, 2026 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
83 values over a limit, 4 required values missing, 2 of 24 reports late

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

All 52 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, total [as N], annual average16.6 lb/d≤ 15 lb/d11%
November 2025Nitrogen, ammonia total [as N], daily maximum13.2 mg/L≤ 10 mg/L32%
November 2025Nitrogen, ammonia total [as N], monthly average13.2 mg/L≤ 5 mg/L164%
November 2025Nitrogen, total [as N], annual average16.2 lb/d≤ 15 lb/d8%
December 2025Nitrogen, ammonia total [as N], daily maximum13.8 mg/L≤ 10 mg/L38%
December 2025Nitrogen, ammonia total [as N], monthly average17.259 lb/d≤ 10 lb/d73%
December 2025Nitrogen, ammonia total [as N], monthly average9.199 mg/L≤ 5 mg/L84%
December 2025Nitrogen, ammonia total [as N], weekly average13.8 mg/L≤ 7.5 mg/L84%
December 2025Nitrogen, ammonia total [as N], weekly average23.4 lb/d≤ 16 lb/d46%
December 2025Nitrogen, total [as N], annual average18.67 lb/d≤ 15 lb/d24%
December 2025SSO, Dry Weather, monthly total1 occur/mo≤ 0 occur/mo—
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum39 mg/L≤ 20 mg/L95%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average14.3 mg/L≤ 10 mg/L43%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average34.7 lb/d≤ 21 lb/d65%
January 2026BOD, carbonaceous [5 day, 20 C], weekly average133.1 lb/d≤ 31 lb/d329%
January 2026BOD, carbonaceous [5 day, 20 C], weekly average27.6 mg/L≤ 15 mg/L84%
January 2026Chlorine, total residual, monthly average.8 mg/L≤ .16 mg/L400%
January 2026Nitrogen, ammonia total [as N], daily maximum20.8 mg/L≤ 10 mg/L108%
January 2026Nitrogen, ammonia total [as N], monthly average20.084 lb/d≤ 10 lb/d101%
January 2026Nitrogen, ammonia total [as N], monthly average9.285 mg/L≤ 5 mg/L86%
January 2026Nitrogen, ammonia total [as N], weekly average148.5 lb/d≤ 16 lb/d828%
January 2026Nitrogen, ammonia total [as N], weekly average17.8 mg/L≤ 7.5 mg/L137%
January 2026Nitrogen, total [as N], annual average118.5 lb/d≤ 15 lb/d690%
January 2026Phosphorus, total [as P], annual average19.5 lb/d≤ 5 lb/d290%
January 2026SSO, Wet Weather, monthly total1 occur/mo≤ 0 occur/mo—
January 2026Solids, suspended percent removal, daily minimum31.5 %≥ 40 %14%
January 2026Solids, total suspended, daily maximum100 mg/L≤ 45 mg/L122%
January 2026Solids, total suspended, monthly average30.8 mg/L≤ 30 mg/L3%
January 2026Solids, total suspended, monthly average98.2 lb/d≤ 63 lb/d56%
January 2026Solids, total suspended, weekly average390.6 lb/d≤ 83 lb/d371%
January 2026Solids, total suspended, weekly average46.8 mg/L≤ 40 mg/L17%
February 2026BOD, carbonaceous [5 day, 20 C], daily maximum26 mg/L≤ 20 mg/L30%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average24.4 lb/d≤ 21 lb/d16%
February 2026BOD, carbonaceous [5 day, 20 C], weekly average46.1 lb/d≤ 31 lb/d49%
February 2026Nitrogen, ammonia total [as N], daily maximum13 mg/L≤ 10 mg/L30%
February 2026Nitrogen, ammonia total [as N], weekly average32.6 lb/d≤ 16 lb/d104%
February 2026Nitrogen, ammonia total [as N], weekly average7.7 mg/L≤ 7.5 mg/L3%
February 2026Nitrogen, total [as N], annual average45.81 lb/d≤ 15 lb/d205%
February 2026Phosphorus, total [as P], annual average7.45 lb/d≤ 5 lb/d49%
February 2026Solids, suspended percent removal, monthly average minimum80.2 %≥ 85 %32%
February 2026Solids, total suspended, daily maximum48.9 mg/L≤ 45 mg/L9%
February 2026Solids, total suspended, monthly average54 mg/L≤ 30 mg/L80%
May 2026Nitrogen, total [as N], annual average28.39 lb/d≤ 15 lb/d89%
May 2026SSO, Wet Weather, monthly total1 occur/mo≤ 0 occur/mo—
May 2026Solids, suspended percent removal, daily minimum31.8 %≥ 40 %14%
June 2026Nitrogen, total [as N], annual average25.9 lb/d≤ 15 lb/d73%
July 2026Nitrogen, total [as N], annual average23.8 lb/d≤ 15 lb/d59%
July 2026Solids, settleable, daily maximum8 mL/L≤ 1 mL/L700%
July 2026Solids, suspended percent removal, daily minimum12.2 %≥ 40 %46%
July 2026Solids, total suspended, daily maximum50.4 mg/L≤ 45 mg/L12%
August 2026Nitrogen, total [as N], annual average21 lb/d≤ 15 lb/d40%
September 2026Nitrogen, total [as N], annual average17.39 lb/d≤ 15 lb/d16%

Limits in force (57)

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≤ 63 lb/dall year001
Solids, total suspendedweekly average≤ 83 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]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Nitrogen, total [as N]annual average≤ 15 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 7.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 3 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 4 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 10 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 4 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 16 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 6 lb/dMay–Oct001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]daily maximumreport only (lb/d)all year001
Phosphorus, total [as P]annual average≤ 5 lb/dall 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 residualmonthly average≤ .16 mg/Lall year001
Chlorine, total residualdaily maximum≤ .28 mg/Lall 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/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≤ 21 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 31 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 15 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.

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

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