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Highland, City of

Sewage treatment plant, Cherokee Village, Arkansas. NPDES permit AR0050261 expired Mar 31, 2026; its limits still apply. Last 12 months: over a limit 46 times (last August 2026), 1 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (19 values), form Q quarterly (9 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
31 values over a limit, 0 required values missing, 4 of 16 reports late

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

All 46 values over a limit
Period endingParameterReportedLimitOver by
October 2025Coliform, fecal general, 30-day geometric mean> 1374 #/100mL≤ 200 #/100mL—
October 2025Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—
November 2025Coliform, fecal general, 30-day geometric mean244 #/100mL≤ 200 #/100mL22%
December 2025Chlorine, total residual, instantaneous maximum.15 mg/L≤ .011 mg/L1264%
December 2025Nitrite + Nitrate total [as N], 7-day average36.89 mg/L≤ 10 mg/L269%
December 2025Nitrite + Nitrate total [as N], monthly average21.2 lb/d≤ 12.5 lb/d70%
December 2025Nitrite + Nitrate total [as N], monthly average36.89 mg/L≤ 10 mg/L269%
January 2026Solids, total suspended, monthly average18 mg/L≤ 15 mg/L20%
February 2026Chlorine, total residual, instantaneous maximum.09 mg/L≤ .011 mg/L718%
February 2026Coliform, fecal general, 30-day geometric mean348 #/100mL≤ 200 #/100mL74%
February 2026Coliform, fecal general, 7-day geometric mean788 #/100mL≤ 400 #/100mL97%
February 2026Solids, total suspended, 7-day average28 mg/L≤ 23 mg/L22%
February 2026Solids, total suspended, monthly average24 mg/L≤ 15 mg/L60%
March 2026Chlorine, total residual, instantaneous maximum.17 mg/L≤ .011 mg/L1445%
March 2026Coliform, fecal general, 30-day geometric mean815 #/100mL≤ 200 #/100mL308%
March 2026Coliform, fecal general, 7-day geometric mean860 #/100mL≤ 400 #/100mL115%
March 2026Nitrite + Nitrate total [as N], 7-day average35.24 mg/L≤ 10 mg/L252%
March 2026Nitrite + Nitrate total [as N], monthly average19.16 lb/d≤ 12.5 lb/d53%
March 2026Nitrite + Nitrate total [as N], monthly average35.24 mg/L≤ 10 mg/L252%
March 2026Solids, total suspended, 7-day average53 mg/L≤ 23 mg/L130%
March 2026Solids, total suspended, monthly average41 mg/L≤ 15 mg/L173%
April 2026Coliform, fecal general, 30-day geometric mean> 2074 #/100mL≤ 200 #/100mL—
April 2026Solids, total suspended, 7-day average28 mg/L≤ 23 mg/L22%
April 2026Solids, total suspended, monthly average21 mg/L≤ 15 mg/L40%
May 2026Chlorine, total residual, instantaneous maximum.13 mg/L≤ .011 mg/L1082%
May 2026Coliform, fecal general, 30-day geometric mean913 #/100mL≤ 200 #/100mL357%
May 2026Coliform, fecal general, 7-day geometric mean1336 #/100mL≤ 400 #/100mL234%
May 2026Solids, total suspended, 7-day average24 mg/L≤ 23 mg/L4%
May 2026Solids, total suspended, monthly average22 mg/L≤ 15 mg/L47%
June 2026Chlorine, total residual, instantaneous maximum.29 mg/L≤ .011 mg/L2536%
June 2026Coliform, fecal general, 30-day geometric mean713 #/100mL≤ 200 #/100mL257%
June 2026Coliform, fecal general, 7-day geometric mean1790 #/100mL≤ 400 #/100mL348%
June 2026Nitrite + Nitrate total [as N], 7-day average68.65 mg/L≤ 10 mg/L587%
June 2026Nitrite + Nitrate total [as N], monthly average35.5 lb/d≤ 12.5 lb/d184%
June 2026Nitrite + Nitrate total [as N], monthly average68.65 mg/L≤ 10 mg/L587%
June 2026Solids, total suspended, monthly average19.5 mg/L≤ 15 mg/L30%
July 2026Chlorine, total residual, instantaneous maximum.06 mg/L≤ .011 mg/L445%
July 2026Coliform, fecal general, 30-day geometric mean> 1494 #/100mL≤ 200 #/100mL—
July 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—
July 2026Solids, total suspended, 7-day average25 mg/L≤ 23 mg/L9%
July 2026Solids, total suspended, monthly average15.5 mg/L≤ 15 mg/L3%
August 2026Chlorine, total residual, instantaneous maximum.05 mg/L≤ .011 mg/L355%
August 2026Coliform, fecal general, 30-day geometric mean> 762 #/100mL≤ 200 #/100mL—
August 2026Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 400 #/100mL—
August 2026Solids, total suspended, 7-day average50 mg/L≤ 23 mg/L117%
August 2026Solids, total suspended, monthly average27 mg/L≤ 15 mg/L80%

Limits in force (35)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 2 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≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 18.8 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 10.3 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≤ 3.9 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 10.3 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≤ 4.9 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 12.9 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 6.3 lb/dMay–Oct
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]7-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Nitrite + Nitrate total [as N]monthly average≤ 10 mg/Lall year
Nitrite + Nitrate total [as N]7-day average≤ 10 mg/Lall year
Nitrite + Nitrate total [as N]monthly average≤ 12.5 lb/dall year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]7-day averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (lb/d)all 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
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/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≤ 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≤ 12.5 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/AR0050261 · MCP: https://passage-data.com/mcp