Eureka Springs, City of

NPDES permit AR0021865 · Minor POTW · effective, expires 2030-12-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

9values over a limit
0required values missing, on 0 form(s)
0of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: E. coli (3), BOD, carbonaceous [5 day, 20 C] (3), Nitrogen, ammonia total [as N] (3).

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 (30)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 6.5 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 15 mg/L all year
001Solids, total suspended7 DA AVG <= 23 mg/L all year
001Solids, total suspendedMO AVG <= 112.6 lb/d all year
001Nitrogen, ammonia total [as N]MO AVG <= 2.5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 5 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 3.9 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 3.8 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 7.5 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 3.9 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 18.8 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 37.6 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 29.3 lb/d Apr
001Nitrite + Nitrate total [as N]MO AVG <= 10 mg/L all year
001Nitrite + Nitrate total [as N]7 DA AVG <= 10 mg/L all year
001Nitrite + Nitrate total [as N]MO AVG <= 75.1 lb/d all year
001Phosphorus, total [as P]6D <= .5 mg/L all year
001Phosphorus, total [as P]7 DA AVG <= 1.56 mg/L all year
001Phosphorus, total [as P]MO AVG <= 3.8 lb/d all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001E. coli30DA GEO <= 126 #/100mL all year
001E. coli7 DA GEO <= 410 #/100mL all year
001OverflowsMO TOTAL report only all year
001Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 15 mg/L all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 75.1 lb/d 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