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Rockport, City of

Sewage treatment plant, Rockport, Arkansas. NPDES permit AR0052663 expired Jul 31, 2026; its limits still apply. Last 12 months: over a limit 25 times (last July 2026), 10 required values missing, 8 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (6 values), form Q quarterly (8 values), form F quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
52 values over a limit, 53 required values missing, 17 of 21 reports late

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

All 25 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], 7-day average56 mg/L≤ 10.5 mg/L433%
October 2025Nitrogen, ammonia total [as N], 7-day average56 mg/L≤ 10.5 mg/L433%
October 2025Nitrogen, ammonia total [as N], monthly average3.3 lb/d≤ 2.7 lb/d22%
October 2025Nitrogen, ammonia total [as N], monthly average3.3 lb/d≤ 2.7 lb/d22%
October 2025Nitrogen, ammonia total [as N], monthly average56 mg/L≤ 7 mg/L700%
October 2025Nitrogen, ammonia total [as N], monthly average56 mg/L≤ 7 mg/L700%
October 2025Oxygen, dissolved [DO], instantaneous minimum1.62 mg/L≥ 3 mg/L46%
October 2025Oxygen, dissolved [DO], instantaneous minimum1.62 mg/L≥ 3 mg/L46%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average12.9 mg/L≤ 10 mg/L29%
December 2025Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
December 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
January 2026Oxygen, dissolved [DO], instantaneous minimum4.29 mg/L≥ 6 mg/L29%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average18.3 mg/L≤ 15 mg/L22%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average18.3 mg/L≤ 10 mg/L83%
March 2026Nitrogen, ammonia total [as N], 7-day average40.1 mg/L≤ 10.5 mg/L282%
March 2026Nitrogen, ammonia total [as N], monthly average40.1 mg/L≤ 7 mg/L473%
April 2026Nitrogen, ammonia total [as N], 7-day average26.5 mg/L≤ 6.1 mg/L334%
April 2026Nitrogen, ammonia total [as N], monthly average26.5 mg/L≤ 6.1 mg/L334%
April 2026Oxygen, dissolved [DO], instantaneous minimum4.71 mg/L≥ 6 mg/L22%
June 2026BOD, carbonaceous [5 day, 20 C], 7-day average32.4 mg/L≤ 15 mg/L116%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average32.4 mg/L≤ 10 mg/L224%
June 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 200 #/100mL—
June 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 400 #/100mL—
July 2026Nitrogen, ammonia total [as N], 7-day average20.4 mg/L≤ 10.5 mg/L94%
July 2026Nitrogen, ammonia total [as N], monthly average20.4 mg/L≤ 7 mg/L191%

Limits in force (27)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/LJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspended7-day average≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 5.7 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6.1 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 7 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 6.1 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 10.5 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 10.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 2.3 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 2.7 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.7 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
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≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3.8 lb/dall year

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/AR0052663 · MCP: https://passage-data.com/mcp