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Bono, City of

Sewage treatment plant, Bono, Arkansas. NPDES permit AR0020699 expired Mar 31, 2025; its limits still apply. Last 12 months: over a limit 38 times (last August 2026), 1 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
49 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 38 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, 30-day geometric mean> 1655 #/100mL≤ 1000 #/100mL—
October 2025Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
October 2025Nitrogen, ammonia total [as N], 7-day average9.2 mg/L≤ 7.5 mg/L23%
October 2025Nitrogen, ammonia total [as N], monthly average8.9 mg/L≤ 5 mg/L78%
November 2025Coliform, fecal general, 30-day geometric mean> 2000 #/100mL≤ 1000 #/100mL—
November 2025Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
December 2025Coliform, fecal general, 30-day geometric mean> 2000 #/100mL≤ 1000 #/100mL—
December 2025Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
December 2025Nitrogen, ammonia total [as N], 7-day average23.7 mg/L≤ 14.7 mg/L61%
December 2025Nitrogen, ammonia total [as N], monthly average22.1 mg/L≤ 12 mg/L84%
January 2026Coliform, fecal general, 30-day geometric mean> 2000 #/100mL≤ 1000 #/100mL—
January 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
January 2026Nitrogen, ammonia total [as N], 7-day average18.4 mg/L≤ 14.7 mg/L25%
January 2026Nitrogen, ammonia total [as N], monthly average17.9 mg/L≤ 12 mg/L49%
February 2026Coliform, fecal general, 30-day geometric mean> 2510 #/100mL≤ 1000 #/100mL—
February 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
March 2026Coliform, fecal general, 30-day geometric mean> 2857 #/100mL≤ 1000 #/100mL—
March 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
March 2026Nitrogen, ammonia total [as N], 7-day average22.4 mg/L≤ 14.7 mg/L52%
March 2026Nitrogen, ammonia total [as N], monthly average15.4 mg/L≤ 12 mg/L28%
March 2026Nitrogen, ammonia total [as N], monthly average28.43 lb/d≤ 25 lb/d14%
March 2026Solids, total suspended, 7-day average39 mg/L≤ 30 mg/L30%
March 2026Solids, total suspended, monthly average22 mg/L≤ 20 mg/L10%
April 2026Nitrogen, ammonia total [as N], 7-day average16.4 mg/L≤ 5.2 mg/L215%
April 2026Nitrogen, ammonia total [as N], monthly average14.6 mg/L≤ 5.2 mg/L181%
April 2026Nitrogen, ammonia total [as N], monthly average67.06 lb/d≤ 10.8 lb/d521%
May 2026Nitrogen, ammonia total [as N], 7-day average17.3 mg/L≤ 7.5 mg/L131%
May 2026Nitrogen, ammonia total [as N], monthly average17 mg/L≤ 5 mg/L240%
June 2026Nitrogen, ammonia total [as N], 7-day average16.6 mg/L≤ 7.5 mg/L121%
June 2026Nitrogen, ammonia total [as N], monthly average10.2 mg/L≤ 5 mg/L104%
July 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
July 2026Nitrogen, ammonia total [as N], 7-day average21 mg/L≤ 7.5 mg/L180%
July 2026Nitrogen, ammonia total [as N], monthly average17.6 mg/L≤ 5 mg/L252%
July 2026Nitrogen, ammonia total [as N], monthly average20.31 lb/d≤ 10 lb/d103%
August 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
August 2026Nitrogen, ammonia total [as N], 7-day average15.5 mg/L≤ 7.5 mg/L107%
August 2026Nitrogen, ammonia total [as N], monthly average15.3 mg/L≤ 5 mg/L206%
August 2026Nitrogen, ammonia total [as N], monthly average19.01 lb/d≤ 10 lb/d90%

Limits in force (26)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 4.5 mg/LJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspended7-day average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 41.7 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 14.7 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10.8 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 25 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 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 maximumreport only (mg/L)all year
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year
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≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41.7 lb/dall year

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/AR0020699 · MCP: https://passage-data.com/mcp