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Pulaski County, Arkansas Property Owners Multipurpose Improvement Dist #703-07

Sewage treatment plant, Little Rock, Arkansas. NPDES permit AR0050521 expired Aug 31, 2026; its limits still apply. Last 12 months: over a limit 32 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (16 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
13 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 32 values over a limit
Period endingParameterReportedLimitOver by
November 2025Nitrogen, ammonia total [as N], monthly average14.4 mg/L≤ 12 mg/L20%
December 2025Nitrogen, ammonia total [as N], daily maximum25.1 mg/L≤ 14.7 mg/L71%
December 2025Nitrogen, ammonia total [as N], monthly average25.1 mg/L≤ 12 mg/L109%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average24.5 mg/L≤ 20 mg/L23%
January 2026Nitrogen, ammonia total [as N], daily maximum41.8 mg/L≤ 14.7 mg/L184%
January 2026Nitrogen, ammonia total [as N], monthly average41.8 mg/L≤ 12 mg/L248%
January 2026Nitrogen, ammonia total [as N], monthly average5.92 lb/d≤ 4 lb/d48%
February 2026Nitrogen, ammonia total [as N], daily maximum37.6 mg/L≤ 14.7 mg/L156%
February 2026Nitrogen, ammonia total [as N], monthly average31.6 mg/L≤ 12 mg/L163%
March 2026BOD, carbonaceous [5 day, 20 C], daily maximum63.1 mg/L≤ 30 mg/L110%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average41.4 mg/L≤ 20 mg/L107%
March 2026Coliform, fecal general, 30-day geometric mean> 2419 #/100mL≤ 1000 #/100mL—
March 2026Coliform, fecal general, 7-day geometric mean> 2419 #/100mL≤ 2000 #/100mL—
March 2026Nitrogen, ammonia total [as N], daily maximum36.5 mg/L≤ 14.7 mg/L148%
March 2026Nitrogen, ammonia total [as N], monthly average35.5 mg/L≤ 12 mg/L196%
March 2026Nitrogen, ammonia total [as N], monthly average4.4 lb/d≤ 4 lb/d10%
April 2026Nitrogen, ammonia total [as N], daily maximum33.3 mg/L≤ 5.2 mg/L540%
April 2026Nitrogen, ammonia total [as N], monthly average3.1 lb/d≤ 1.7 lb/d82%
April 2026Nitrogen, ammonia total [as N], monthly average31.5 mg/L≤ 5.2 mg/L506%
May 2026Nitrogen, ammonia total [as N], daily maximum27.8 mg/L≤ 7.5 mg/L271%
May 2026Nitrogen, ammonia total [as N], monthly average2.8 lb/d≤ 1.7 lb/d65%
May 2026Nitrogen, ammonia total [as N], monthly average25 mg/L≤ 5 mg/L400%
June 2026Coliform, fecal general, 30-day geometric mean> 2419 #/100mL≤ 1000 #/100mL—
June 2026Coliform, fecal general, 7-day geometric mean> 2419 #/100mL≤ 2000 #/100mL—
June 2026Nitrogen, ammonia total [as N], daily maximum10.3 mg/L≤ 7.5 mg/L37%
June 2026Nitrogen, ammonia total [as N], monthly average10 mg/L≤ 5 mg/L100%
July 2026Coliform, fecal general, 30-day geometric mean1248 #/100mL≤ 1000 #/100mL25%
July 2026Coliform, fecal general, 7-day geometric mean> 2400 #/100mL≤ 2000 #/100mL—
July 2026Nitrogen, ammonia total [as N], daily maximum9.4 mg/L≤ 7.5 mg/L25%
July 2026Nitrogen, ammonia total [as N], monthly average9.4 mg/L≤ 5 mg/L88%
August 2026Nitrogen, ammonia total [as N], daily maximum9.3 mg/L≤ 7.5 mg/L24%
August 2026Nitrogen, ammonia total [as N], monthly average7.8 mg/L≤ 5 mg/L56%

Limits in force (26)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/LJan, Feb, Mar, Apr, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/LMay–Oct
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendeddaily maximum≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 6.7 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 14.7 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.7 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 1.7 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 4 lb/dJan, Feb, Mar, Nov, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 23 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 6.7 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5 lb/dMay–Oct

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0050521 · MCP: https://passage-data.com/mcp