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Paris, City Of

Sewage treatment plant, Paris, Arkansas. NPDES permit AR0021857 expired May 31, 2026; its limits still apply. Last 12 months: over a limit 14 times (last August 2026), 5 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (23 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
17 values over a limit, 0 required values missing, 3 of 12 reports late

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

All 14 values over a limit
Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], 7-day average6.2 mg/L≤ 5.6 mg/L11%
October 2025Nitrogen, ammonia total [as N], monthly average6.07 mg/L≤ 5 mg/L21%
November 2025Oxygen, dissolved [DO], instantaneous minimum5 mg/L≥ 6 mg/L17%
January 2026Oxygen, dissolved [DO], instantaneous minimum5.7 mg/L≥ 6 mg/L5%
March 2026Oxygen, dissolved [DO], instantaneous minimum5 mg/L≥ 6 mg/L17%
April 2026Nitrogen, ammonia total [as N], 7-day average7.26 mg/L≤ 5.6 mg/L30%
April 2026Nitrogen, ammonia total [as N], monthly average49.27 lb/d≤ 33.5 lb/d47%
April 2026Nitrogen, ammonia total [as N], monthly average6.03 mg/L≤ 5.6 mg/L8%
April 2026Oxygen, dissolved [DO], instantaneous minimum3.1 mg/L≥ 6 mg/L48%
July 2026Coliform, fecal general, 30-day geometric mean332 #/100mL≤ 200 #/100mL66%
July 2026Coliform, fecal general, 7-day geometric mean840 #/100mL≤ 400 #/100mL110%
July 2026Nitrogen, ammonia total [as N], 7-day average8.2 mg/L≤ 5.6 mg/L46%
July 2026Nitrogen, ammonia total [as N], monthly average7.11 mg/L≤ 5 mg/L42%
August 2026Nitrogen, ammonia total [as N], 7-day average6.13 mg/L≤ 5.6 mg/L9%

Limits in force (32)

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≤ 89.8 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 8.5 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≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 12.8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 5.6 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 33.5 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 50.9 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 29.9 lb/dMay–Oct
Copper, total recoverablemonthly average≤ 9.24 ug/Lall year
Copper, total recoverable7-day average≤ 18.53 ug/Lall year
Copper, total recoverablemonthly average≤ .055 lb/dall year
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≤ .011 mg/Lall year
Peracetic Acidinstantaneous maximum≤ 1 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≤ 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≤ 59.9 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/AR0021857 · MCP: https://passage-data.com/mcp