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Melbourne, City of - Melbourne WWTf

Sewage treatment plant, Melbourne, Arkansas. NPDES permit AR0020036, in force until Nov 30, 2030. Last 12 months: over a limit 19 times (last June 2026), 92 required values missing, 16 of 20 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A1 monthly (19 values), form A2 monthly (18 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
35 values over a limit, 19 required values missing, 11 of 12 reports late

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

All 19 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, monthly geometric mean1355 #/100mL≤ 1000 #/100mL36%
November 2025Chlorine, total residual, instantaneous maximum.09 mg/L< .011 mg/L718%
November 2025Coliform, fecal general, 7-day geometric mean3350 #/100mL≤ 2000 #/100mL68%
November 2025Coliform, fecal general, monthly geometric mean1875 #/100mL≤ 1000 #/100mL88%
December 2025Chlorine, total residual, instantaneous maximum.04 mg/L< .011 mg/L264%
December 2025Coliform, fecal general, 30-day geometric mean2437 #/100mL≤ 1000 #/100mL144%
December 2025Coliform, fecal general, 7-day geometric mean2750 #/100mL≤ 2000 #/100mL38%
December 2025Solids, total suspended, 7-day average128 mg/L≤ 45 mg/L184%
December 2025Solids, total suspended, monthly average70 mg/L≤ 30 mg/L133%
January 2026Chlorine, total residual, instantaneous maximum.25 mg/L< .011 mg/L2173%
January 2026Coliform, fecal general, 30-day geometric mean1082 #/100mL≤ 1000 #/100mL8%
February 2026Chlorine, total residual, instantaneous maximum.06 mg/L< .011 mg/L445%
February 2026Chlorine, total residual, instantaneous maximum.06 mg/L< .011 mg/L445%
March 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
April 2026Coliform, fecal general, 30-day geometric mean1222 #/100mL≤ 1000 #/100mL22%
April 2026Nitrogen, ammonia total [as N], 7-day average4.9 mg/L≤ 3.9 mg/L26%
May 2026Coliform, fecal general, 7-day geometric mean2760 #/100mL≤ 2000 #/100mL38%
May 2026Coliform, fecal general, 7-day geometric mean2760 #/100mL≤ 2000 #/100mL38%
June 2026Chlorine, total residual, instantaneous maximum1.52 mg/L< .011 mg/L13718%

Limits in force (57)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/LJan, Feb, Mar, Apr, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/LJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 15 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspended7-day average≤ 22.5 mg/LMay–Oct
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspended7-day average≤ 22.5 mg/LMay–Oct
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 51.3 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 102.6 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 83.8 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 167.6 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LJan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LApr–Oct
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 3.9 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 5.9 mg/LJan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 3.9 mg/LApr–Oct
Nitrogen, ammonia total [as N]7-day average≤ 5.9 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 13.3 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 13.3 lb/dJan, Feb, Mar, May, Jun, Jul, Aug, Sep, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 21.8 lb/dApr–Oct
Nitrogen, ammonia total [as N]monthly average≤ 21.8 lb/dJan, Feb, Mar, Nov, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plant7-day averagereport only (MGD)all year
Flow, in conduit or thru treatment plant7-day averagereport only (MGD)all year
Chlorine, total residualinstantaneous maximum< .011 mg/Lall year
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year
Overflowsmonthly totalreport only (occur/mo)all year
Overflowsmonthly totalreport only (occur/mo)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 23 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 34.2 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 68.4 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 55.9 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 83.8 lb/dJan, Feb, Mar, Apr, Nov, Dec

How strict are these limits?

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

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