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Little Rock, City of/Ahtd-MS4

General Government, major discharger, Little Rock, Arkansas. NPDES permit ARS000002 expired Dec 31, 2024; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form Q quarterly, outfall 002 form Q quarterly, outfall 003 form Q quarterly, outfall 005 form Q quarterly, outfall 006 form Q quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 20 reports late

Limits in force (150)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Caveragereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedaveragereport only (mg/L)all year001
Solids, total suspendedmaximumreport only (mg/L)all year001
Oil & Greaseaveragereport only (mg/L)all year001
Oil & Greasemaximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]maximumreport only (mg/L)all year001
Phosphorus, dissolvedaveragereport only (mg/L)all year001
Phosphorus, dissolvedmaximumreport only (mg/L)all year001
Hardness, total [as CaCO3]averagereport only (mg/L)all year001
Hardness, total [as CaCO3]maximumreport only (mg/L)all year001
Silver total recoverableaveragereport only (ug/L)all year001
Silver total recoverablemaximumreport only (ug/L)all year001
Zinc, total recoverableaveragereport only (ug/L)all year001
Zinc, total recoverablemaximumreport only (ug/L)all year001
Cadmium, total recoverableaveragereport only (ug/L)all year001
Cadmium, total recoverablemaximumreport only (ug/L)all year001
Lead, total recoverableaveragereport only (ug/L)all year001
Lead, total recoverablemaximumreport only (ug/L)all year001
Copper, total recoverableaveragereport only (ug/L)all year001
Copper, total recoverablemaximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year001
Flow, in conduit or thru treatment plantmaximumreport only (MGD)all year001
E. coliaveragereport only (#/100mL)all year001
E. colimaximumreport only (#/100mL)all year001
Solids, total dissolvedaveragereport only (mg/L)all year001
Solids, total dissolvedmaximumreport only (mg/L)all year001
BOD, 5-day, 20 deg. Caveragereport only (mg/L)all year002
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L)all year002
pHminimum≥ 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedaveragereport only (mg/L)all year002
Solids, total suspendedmaximumreport only (mg/L)all year002
Oil & Greaseaveragereport only (mg/L)all year002
Oil & Greasemaximumreport only (mg/L)all year002
Nitrite + Nitrate total [as N]averagereport only (mg/L)all year002
Nitrite + Nitrate total [as N]maximumreport only (mg/L)all year002
Phosphorus, dissolvedaveragereport only (mg/L)all year002
Phosphorus, dissolvedmaximumreport only (mg/L)all year002
Hardness, total [as CaCO3]averagereport only (mg/L)all year002
Hardness, total [as CaCO3]maximumreport only (mg/L)all year002
Silver total recoverableaveragereport only (ug/L)all year002
Silver total recoverablemaximumreport only (ug/L)all year002
Zinc, total recoverableaveragereport only (ug/L)all year002
Zinc, total recoverablemaximumreport only (ug/L)all year002
Cadmium, total recoverableaveragereport only (ug/L)all year002
Cadmium, total recoverablemaximumreport only (ug/L)all year002
Lead, total recoverableaveragereport only (ug/L)all year002
Lead, total recoverablemaximumreport only (ug/L)all year002
Copper, total recoverableaveragereport only (ug/L)all year002
Copper, total recoverablemaximumreport only (ug/L)all year002
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year002
Flow, in conduit or thru treatment plantmaximumreport only (MGD)all year002
E. coliaveragereport only (#/100mL)all year002
E. colimaximumreport only (#/100mL)all year002
Solids, total dissolvedaveragereport only (mg/L)all year002
Solids, total dissolvedmaximumreport only (mg/L)all year002
BOD, 5-day, 20 deg. Caveragereport only (mg/L)all year003
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L)all year003
pHminimum≥ 6 SUall year003
pHmaximum≤ 9 SUall year003
Solids, total suspendedaveragereport only (mg/L)all year003
Solids, total suspendedmaximumreport only (mg/L)all year003
Oil & Greaseaveragereport only (mg/L)all year003
Oil & Greasemaximumreport only (mg/L)all year003
Nitrite + Nitrate total [as N]averagereport only (mg/L)all year003
Nitrite + Nitrate total [as N]maximumreport only (mg/L)all year003
Phosphorus, dissolvedaveragereport only (mg/L)all year003
Phosphorus, dissolvedmaximumreport only (mg/L)all year003
Hardness, total [as CaCO3]averagereport only (mg/L)all year003
Hardness, total [as CaCO3]maximumreport only (mg/L)all year003
Silver total recoverableaveragereport only (ug/L)all year003
Silver total recoverablemaximumreport only (ug/L)all year003
Zinc, total recoverableaveragereport only (ug/L)all year003
Zinc, total recoverablemaximumreport only (ug/L)all year003
Cadmium, total recoverableaveragereport only (ug/L)all year003
Cadmium, total recoverablemaximumreport only (ug/L)all year003
Lead, total recoverableaveragereport only (ug/L)all year003
Lead, total recoverablemaximumreport only (ug/L)all year003
Copper, total recoverableaveragereport only (ug/L)all year003
Copper, total recoverablemaximumreport only (ug/L)all year003
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year003
Flow, in conduit or thru treatment plantmaximumreport only (MGD)all year003
E. coliaveragereport only (#/100mL)all year003
E. colimaximumreport only (#/100mL)all year003
Solids, total dissolvedaveragereport only (mg/L)all year003
Solids, total dissolvedmaximumreport only (mg/L)all year003
BOD, 5-day, 20 deg. Caveragereport only (mg/L)all year005
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L)all year005
pHminimum≥ 6 SUall year005
pHmaximum≤ 9 SUall year005
Solids, total suspendedaveragereport only (mg/L)all year005
Solids, total suspendedmaximumreport only (mg/L)all year005
Oil & Greaseaveragereport only (mg/L)all year005
Oil & Greasemaximumreport only (mg/L)all year005
Nitrite + Nitrate total [as N]averagereport only (mg/L)all year005
Nitrite + Nitrate total [as N]maximumreport only (mg/L)all year005
Phosphorus, dissolvedaveragereport only (mg/L)all year005
Phosphorus, dissolvedmaximumreport only (mg/L)all year005
Hardness, total [as CaCO3]averagereport only (mg/L)all year005
Hardness, total [as CaCO3]maximumreport only (mg/L)all year005
Silver total recoverableaveragereport only (ug/L)all year005
Silver total recoverablemaximumreport only (ug/L)all year005
Zinc, total recoverableaveragereport only (ug/L)all year005
Zinc, total recoverablemaximumreport only (ug/L)all year005
Cadmium, total recoverableaveragereport only (ug/L)all year005
Cadmium, total recoverablemaximumreport only (ug/L)all year005
Lead, total recoverableaveragereport only (ug/L)all year005
Lead, total recoverablemaximumreport only (ug/L)all year005
Copper, total recoverableaveragereport only (ug/L)all year005
Copper, total recoverablemaximumreport only (ug/L)all year005
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year005
Flow, in conduit or thru treatment plantmaximumreport only (MGD)all year005
E. coliaveragereport only (#/100mL)all year005
E. colimaximumreport only (#/100mL)all year005
Solids, total dissolvedaveragereport only (mg/L)all year005
Solids, total dissolvedmaximumreport only (mg/L)all year005
BOD, 5-day, 20 deg. Caveragereport only (mg/L)all year006
BOD, 5-day, 20 deg. Cmaximumreport only (mg/L)all year006
pHminimum≥ 6 SUall year006
pHmaximum≤ 9 SUall year006
Solids, total suspendedaveragereport only (mg/L)all year006
Solids, total suspendedmaximumreport only (mg/L)all year006
Oil & Greaseaveragereport only (mg/L)all year006
Oil & Greasemaximumreport only (mg/L)all year006
Nitrite + Nitrate total [as N]averagereport only (mg/L)all year006
Nitrite + Nitrate total [as N]maximumreport only (mg/L)all year006
Phosphorus, dissolvedaveragereport only (mg/L)all year006
Phosphorus, dissolvedmaximumreport only (mg/L)all year006
Hardness, total [as CaCO3]averagereport only (mg/L)all year006
Hardness, total [as CaCO3]maximumreport only (mg/L)all year006
Silver total recoverableaveragereport only (ug/L)all year006
Silver total recoverablemaximumreport only (ug/L)all year006
Zinc, total recoverableaveragereport only (ug/L)all year006
Zinc, total recoverablemaximumreport only (ug/L)all year006
Cadmium, total recoverableaveragereport only (ug/L)all year006
Cadmium, total recoverablemaximumreport only (ug/L)all year006
Lead, total recoverableaveragereport only (ug/L)all year006
Lead, total recoverablemaximumreport only (ug/L)all year006
Copper, total recoverableaveragereport only (ug/L)all year006
Copper, total recoverablemaximumreport only (ug/L)all year006
Flow, in conduit or thru treatment plantaveragereport only (MGD)all year006
Flow, in conduit or thru treatment plantmaximumreport only (MGD)all year006
E. coliaveragereport only (#/100mL)all year006
E. colimaximumreport only (#/100mL)all year006
Solids, total dissolvedaveragereport only (mg/L)all year006
Solids, total dissolvedmaximumreport only (mg/L)all year006

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/ARS000002 · MCP: https://passage-data.com/mcp