Prairie Grove Water & Waste Water Utilities, City of - Prairie Grove WWTP

NPDES permit AR0022098 · Major POTW · administratively continued, expires 2025-11-30 · EPA's file as of 2026-09-19

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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 2025-11-30 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

13values over a limit
0required values missing, on 0 form(s)
0of 49 forms filed late

Last period with anything received: 2026-07-31. Most often over: Phosphorus, total [as P] (7), Nitrite + Nitrate total [as N] (3), Oxygen, dissolved [DO] (2).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (112)

OutfallParameterStatisticLimitMonths
002Oxygen, dissolved [DO]INST MIN >= 6 mg/L May, Jun, Jul, Aug, Sep, Oct
002Oxygen, dissolved [DO]INST MIN >= 7 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Oxygen, dissolved [DO]INST MIN >= 6 mg/L May, Jun, Jul, Aug, Sep, Oct
002Oxygen, dissolved [DO]INST MIN >= 7 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Oxygen, dissolved [DO]INST MIN >= 6 mg/L May, Jun, Jul, Aug, Sep, Oct
002Oxygen, dissolved [DO]INST MIN >= 7 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002pHMINIMUM >= 6 SU all year
002pHMINIMUM >= 6 SU all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002pHMAXIMUM <= 9 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedMO AVG <= 15 mg/L all year
002Solids, total suspendedMO AVG <= 15 mg/L all year
002Solids, total suspendedMO AVG <= 15 mg/L all year
002Solids, total suspended7 DA AVG <= 22.5 mg/L all year
002Solids, total suspended7 DA AVG <= 22.5 mg/L all year
002Solids, total suspended7 DA AVG <= 22.5 mg/L all year
002Solids, total suspendedMO AVG <= 112.6 lb/d all year
002Solids, total suspendedMO AVG <= 168.9 lb/d all year
002Solids, total suspendedMO AVG <= 168.9 lb/d all year
002Nitrogen, ammonia total [as N]MO AVG <= 7 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 4.3 mg/L Apr
002Nitrogen, ammonia total [as N]MO AVG <= 1.7 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 5.8 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 2.3 mg/L Apr
002Nitrogen, ammonia total [as N]MO AVG <= 1.7 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 5.8 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 2.3 mg/L Apr
002Nitrogen, ammonia total [as N]7 DA AVG <= 10.5 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]7 DA AVG <= 4.3 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]7 DA AVG <= 4.3 mg/L Apr
002Nitrogen, ammonia total [as N]7 DA AVG <= 4.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]7 DA AVG <= 10.5 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]7 DA AVG <= 5.6 mg/L Apr
002Nitrogen, ammonia total [as N]7 DA AVG <= 4.2 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]7 DA AVG <= 10.5 mg/L Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]7 DA AVG <= 5.6 mg/L Apr
002Nitrogen, ammonia total [as N]MO AVG <= 52.5 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 30 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 32.3 lb/d Apr
002Nitrogen, ammonia total [as N]MO AVG <= 19.1 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 65.3 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 25.9 lb/d Apr
002Nitrogen, ammonia total [as N]MO AVG <= 19.1 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MO AVG <= 65.3 lb/d Jan, Feb, Mar, Nov, Dec
002Nitrogen, ammonia total [as N]MO AVG <= 25.9 lb/d Apr
002Nitrite + Nitrate total [as N]INST MAX <= 10 mg/L all year
002Nitrite + Nitrate total [as N]MO AVG <= 112.6 lb/d all year
002Phosphorus, total [as P]MO AVG <= 1 mg/L all year
002Phosphorus, total [as P]ROLL AVG <= .5 mg/L all year
002Phosphorus, total [as P]ROLL AVG <= .5 mg/L all year
002Phosphorus, total [as P]7 DA AVG <= 1.5 mg/L all year
002Phosphorus, total [as P]7 DA AVG <= .8 mg/L all year
002Phosphorus, total [as P]7 DA AVG <= .8 mg/L all year
002Phosphorus, total [as P]MO AVG <= 7.5 lb/d all year
002Phosphorus, total [as P]MO AVG <= 5.6 lb/d all year
002Phosphorus, total [as P]MO AVG <= 5.6 lb/d all year
002Sulfate, total [as SO4]MO AVG report only all year
002Sulfate, total [as SO4]MO AVG report only all year
002Sulfate, total [as SO4]MO AVG report only all year
002Sulfate, total [as SO4]7 DA AVG report only all year
002Sulfate, total [as SO4]7 DA AVG report only all year
002Sulfate, total [as SO4]7 DA AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Coliform, fecal general30DA GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep, Oct
002Coliform, fecal general30DA GEO <= 1000 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
002Coliform, fecal general30DA GEO <= 200 #/100mL all year
002Coliform, fecal general30DA GEO <= 1000 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
002Coliform, fecal general30DA GEO <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep
002Coliform, fecal general7 DA GEO <= 400 #/100mL May, Jun, Jul, Aug, Sep, Oct
002Coliform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Apr, Nov, Dec
002Coliform, fecal general7 DA GEO <= 400 #/100mL all year
002Coliform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Oct, Nov, Dec
002Coliform, fecal general7 DA GEO <= 400 #/100mL Apr, May, Jun, Jul, Aug, Sep
002OverflowsMO TOTAL report only all year
002OverflowsMO TOTAL report only all year
002OverflowsMO TOTAL report only all year
002Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
002Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
002Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
002BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 15 mg/L all year
002BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 15 mg/L all year
002BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 15 mg/L all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 75.1 lb/d all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 112.6 lb/d all year
002BOD, carbonaceous [5 day, 20 C]MO AVG <= 112.6 lb/d all year
TX2Whole effluent toxicity - retest #17 DA MIN report only all year
TX2Whole effluent toxicity - retest #27 DA MIN report only all year
TX2WET, sublethal retest #17 DA MIN report only all year
TX2WET, sublethal retest #27 DA MIN report only all year
TX2Whole Effluent Toxicity - Retest #37 DA MIN report only all year
TX2Whole Effluent Toxicity, Sub-Lethal Retest #37 DA MIN report only all year
TX2Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7 DA MIN report only all year
TX2Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7 DA MIN 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