LITTLE ROCK, CITY OF/AHTD-MS4

NPDES permit ARS000002 · Major NON-POTW · administratively continued, expires 2024-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2024-12-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 20 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 25 days after each monitoring period ends (the most common figure among AR permits in EPA's filings — check your permit).

Limits in force (150)

OutfallParameterStatisticLimitMonths
001BOD, 5-day, 20 deg. CAVERAGE report only all year
001BOD, 5-day, 20 deg. CMAXIMUM report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedAVERAGE report only all year
001Solids, total suspendedMAXIMUM report only all year
001Oil & GreaseAVERAGE report only all year
001Oil & GreaseMAXIMUM report only all year
001Nitrite + Nitrate total [as N]AVERAGE report only all year
001Nitrite + Nitrate total [as N]MAXIMUM report only all year
001Phosphorus, dissolvedAVERAGE report only all year
001Phosphorus, dissolvedMAXIMUM report only all year
001Hardness, total [as CaCO3]AVERAGE report only all year
001Hardness, total [as CaCO3]MAXIMUM report only all year
001Silver total recoverableAVERAGE report only all year
001Silver total recoverableMAXIMUM report only all year
001Zinc, total recoverableAVERAGE report only all year
001Zinc, total recoverableMAXIMUM report only all year
001Cadmium, total recoverableAVERAGE report only all year
001Cadmium, total recoverableMAXIMUM report only all year
001Lead, total recoverableAVERAGE report only all year
001Lead, total recoverableMAXIMUM report only all year
001Copper, total recoverableAVERAGE report only all year
001Copper, total recoverableMAXIMUM report only all year
001Flow, in conduit or thru treatment plantAVERAGE report only all year
001Flow, in conduit or thru treatment plantMAXIMUM report only all year
001E. coliAVERAGE report only all year
001E. coliMAXIMUM report only all year
001Solids, total dissolvedAVERAGE report only all year
001Solids, total dissolvedMAXIMUM report only all year
002BOD, 5-day, 20 deg. CAVERAGE report only all year
002BOD, 5-day, 20 deg. CMAXIMUM report only all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedAVERAGE report only all year
002Solids, total suspendedMAXIMUM report only all year
002Oil & GreaseAVERAGE report only all year
002Oil & GreaseMAXIMUM report only all year
002Nitrite + Nitrate total [as N]AVERAGE report only all year
002Nitrite + Nitrate total [as N]MAXIMUM report only all year
002Phosphorus, dissolvedAVERAGE report only all year
002Phosphorus, dissolvedMAXIMUM report only all year
002Hardness, total [as CaCO3]AVERAGE report only all year
002Hardness, total [as CaCO3]MAXIMUM report only all year
002Silver total recoverableAVERAGE report only all year
002Silver total recoverableMAXIMUM report only all year
002Zinc, total recoverableAVERAGE report only all year
002Zinc, total recoverableMAXIMUM report only all year
002Cadmium, total recoverableAVERAGE report only all year
002Cadmium, total recoverableMAXIMUM report only all year
002Lead, total recoverableAVERAGE report only all year
002Lead, total recoverableMAXIMUM report only all year
002Copper, total recoverableAVERAGE report only all year
002Copper, total recoverableMAXIMUM report only all year
002Flow, in conduit or thru treatment plantAVERAGE report only all year
002Flow, in conduit or thru treatment plantMAXIMUM report only all year
002E. coliAVERAGE report only all year
002E. coliMAXIMUM report only all year
002Solids, total dissolvedAVERAGE report only all year
002Solids, total dissolvedMAXIMUM report only all year
003BOD, 5-day, 20 deg. CAVERAGE report only all year
003BOD, 5-day, 20 deg. CMAXIMUM report only all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedAVERAGE report only all year
003Solids, total suspendedMAXIMUM report only all year
003Oil & GreaseAVERAGE report only all year
003Oil & GreaseMAXIMUM report only all year
003Nitrite + Nitrate total [as N]AVERAGE report only all year
003Nitrite + Nitrate total [as N]MAXIMUM report only all year
003Phosphorus, dissolvedAVERAGE report only all year
003Phosphorus, dissolvedMAXIMUM report only all year
003Hardness, total [as CaCO3]AVERAGE report only all year
003Hardness, total [as CaCO3]MAXIMUM report only all year
003Silver total recoverableAVERAGE report only all year
003Silver total recoverableMAXIMUM report only all year
003Zinc, total recoverableAVERAGE report only all year
003Zinc, total recoverableMAXIMUM report only all year
003Cadmium, total recoverableAVERAGE report only all year
003Cadmium, total recoverableMAXIMUM report only all year
003Lead, total recoverableAVERAGE report only all year
003Lead, total recoverableMAXIMUM report only all year
003Copper, total recoverableAVERAGE report only all year
003Copper, total recoverableMAXIMUM report only all year
003Flow, in conduit or thru treatment plantAVERAGE report only all year
003Flow, in conduit or thru treatment plantMAXIMUM report only all year
003E. coliAVERAGE report only all year
003E. coliMAXIMUM report only all year
003Solids, total dissolvedAVERAGE report only all year
003Solids, total dissolvedMAXIMUM report only all year
005BOD, 5-day, 20 deg. CAVERAGE report only all year
005BOD, 5-day, 20 deg. CMAXIMUM report only all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Solids, total suspendedAVERAGE report only all year
005Solids, total suspendedMAXIMUM report only all year
005Oil & GreaseAVERAGE report only all year
005Oil & GreaseMAXIMUM report only all year
005Nitrite + Nitrate total [as N]AVERAGE report only all year
005Nitrite + Nitrate total [as N]MAXIMUM report only all year
005Phosphorus, dissolvedAVERAGE report only all year
005Phosphorus, dissolvedMAXIMUM report only all year
005Hardness, total [as CaCO3]AVERAGE report only all year
005Hardness, total [as CaCO3]MAXIMUM report only all year
005Silver total recoverableAVERAGE report only all year
005Silver total recoverableMAXIMUM report only all year
005Zinc, total recoverableAVERAGE report only all year
005Zinc, total recoverableMAXIMUM report only all year
005Cadmium, total recoverableAVERAGE report only all year
005Cadmium, total recoverableMAXIMUM report only all year
005Lead, total recoverableAVERAGE report only all year
005Lead, total recoverableMAXIMUM report only all year
005Copper, total recoverableAVERAGE report only all year
005Copper, total recoverableMAXIMUM report only all year
005Flow, in conduit or thru treatment plantAVERAGE report only all year
005Flow, in conduit or thru treatment plantMAXIMUM report only all year
005E. coliAVERAGE report only all year
005E. coliMAXIMUM report only all year
005Solids, total dissolvedAVERAGE report only all year
005Solids, total dissolvedMAXIMUM report only all year
006BOD, 5-day, 20 deg. CAVERAGE report only all year
006BOD, 5-day, 20 deg. CMAXIMUM report only all year
006pHMINIMUM >= 6 SU all year
006pHMAXIMUM <= 9 SU all year
006Solids, total suspendedAVERAGE report only all year
006Solids, total suspendedMAXIMUM report only all year
006Oil & GreaseAVERAGE report only all year
006Oil & GreaseMAXIMUM report only all year
006Nitrite + Nitrate total [as N]AVERAGE report only all year
006Nitrite + Nitrate total [as N]MAXIMUM report only all year
006Phosphorus, dissolvedAVERAGE report only all year
006Phosphorus, dissolvedMAXIMUM report only all year
006Hardness, total [as CaCO3]AVERAGE report only all year
006Hardness, total [as CaCO3]MAXIMUM report only all year
006Silver total recoverableAVERAGE report only all year
006Silver total recoverableMAXIMUM report only all year
006Zinc, total recoverableAVERAGE report only all year
006Zinc, total recoverableMAXIMUM report only all year
006Cadmium, total recoverableAVERAGE report only all year
006Cadmium, total recoverableMAXIMUM report only all year
006Lead, total recoverableAVERAGE report only all year
006Lead, total recoverableMAXIMUM report only all year
006Copper, total recoverableAVERAGE report only all year
006Copper, total recoverableMAXIMUM report only all year
006Flow, in conduit or thru treatment plantAVERAGE report only all year
006Flow, in conduit or thru treatment plantMAXIMUM report only all year
006E. coliAVERAGE report only all year
006E. coliMAXIMUM report only all year
006Solids, total dissolvedAVERAGE report only all year
006Solids, total dissolvedMAXIMUM report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states