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Manila, City of

Sewage treatment plant, Manila, Arkansas. NPDES permit AR0021881 expired Jan 31, 2026; its limits still apply. Last 12 months: over a limit 36 times (last August 2026), 2 required values missing, 3 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (19 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
39 values over a limit, 92 required values missing, 9 of 12 reports late

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

All 36 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, instantaneous maximum.2 mg/L≤ .05 mg/L300%
October 2025Coliform, fecal general, 30-day geometric mean1009 #/100mL≤ 1000 #/100mL1%
November 2025Chlorine, total residual, instantaneous maximum.16 mg/L≤ .05 mg/L220%
November 2025Coliform, fecal general, 30-day geometric mean1259 #/100mL≤ 1000 #/100mL26%
November 2025Coliform, fecal general, 7-day geometric mean2100 #/100mL≤ 2000 #/100mL5%
December 2025Chlorine, total residual, instantaneous maximum.23 mg/L≤ .05 mg/L360%
December 2025Coliform, fecal general, 30-day geometric mean> 1246 #/100mL≤ 1000 #/100mL—
December 2025Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
January 2026BOD, 5-day, 20 deg. C, 7-day average65.8 mg/L≤ 45 mg/L46%
January 2026BOD, 5-day, 20 deg. C, monthly average50.1 mg/L≤ 30 mg/L67%
January 2026Chlorine, total residual, instantaneous maximum.23 mg/L≤ .05 mg/L360%
January 2026Coliform, fecal general, 30-day geometric mean1182 #/100mL≤ 1000 #/100mL18%
February 2026Chlorine, total residual, instantaneous maximum.16 mg/L≤ .05 mg/L220%
February 2026Coliform, fecal general, 30-day geometric mean> 1902 #/100mL≤ 1000 #/100mL—
February 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
March 2026BOD, 5-day, 20 deg. C, monthly average30.6 mg/L≤ 30 mg/L2%
March 2026Chlorine, total residual, instantaneous maximum.3 mg/L≤ .05 mg/L500%
March 2026Coliform, fecal general, 30-day geometric mean1181 #/100mL≤ 1000 #/100mL18%
March 2026Coliform, fecal general, 7-day geometric mean2060 #/100mL≤ 2000 #/100mL3%
April 2026Chlorine, total residual, instantaneous maximum.17 mg/L≤ .05 mg/L240%
April 2026Coliform, fecal general, 30-day geometric mean1368 #/100mL≤ 1000 #/100mL37%
April 2026Coliform, fecal general, 7-day geometric mean2460 #/100mL≤ 2000 #/100mL23%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average25.1 mg/L≤ 25 mg/L0%
May 2026Chlorine, total residual, instantaneous maximum.18 mg/L≤ .05 mg/L260%
May 2026Coliform, fecal general, 30-day geometric mean922 #/100mL≤ 200 #/100mL361%
May 2026Coliform, fecal general, 7-day geometric mean1280 #/100mL≤ 400 #/100mL220%
June 2026Chlorine, total residual, instantaneous maximum.21 mg/L≤ .05 mg/L320%
June 2026Coliform, fecal general, 30-day geometric mean1248 #/100mL≤ 200 #/100mL524%
June 2026Coliform, fecal general, 7-day geometric mean1350 #/100mL≤ 400 #/100mL238%
July 2026Chlorine, total residual, instantaneous maximum.06 mg/L≤ .05 mg/L20%
July 2026Coliform, fecal general, 30-day geometric mean> 415 #/100mL≤ 200 #/100mL—
July 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—
August 2026BOD, carbonaceous [5 day, 20 C], monthly average27.1 mg/L≤ 25 mg/L8%
August 2026Chlorine, total residual, instantaneous maximum.08 mg/L≤ .05 mg/L60%
August 2026Coliform, fecal general, 30-day geometric mean342 #/100mL≤ 200 #/100mL71%
August 2026Coliform, fecal general, 7-day geometric mean1180 #/100mL≤ 400 #/100mL195%

Limits in force (24)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, 5-day, 20 deg. Cmonthly average≤ 150.1 lb/dJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHmaximum≤ 10 SUall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspended7-day average≤ 135 mg/Lall year
Solids, total suspendedmonthly average≤ 450.1 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 9 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 30 lb/dMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualinstantaneous maximum≤ .05 mg/Lall year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Sep
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Overflowsmonthly totalreport only (occur/mo)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 38 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 125.1 lb/dMay–Oct

How strict are these limits?

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

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