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Beresford, City of

Sewage treatment plant, Beresford, South Dakota. NPDES permit SD0020079, in force until May 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (20 values), form M quarterly (10 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 16 reports late

Limits in force (50)

ParameterStatisticLimitMonths
Temperature, water deg. fahrenheit30-day averagereport only (deg F)all year
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all year
Flow rate30-day averagereport only (MGD)all year
Flow ratedaily maximumreport only (MGD)all year
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmaximum 7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. C30-day averagereport only (mg/L)all year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 30 mg/Lall year
Solids, total suspendedmaximum 7-day average≤ 45 mg/Lall year
Solids, total suspended30-day averagereport only (mg/L)all year
Nitrogen, total [as N]daily maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]30-day average≤ 4.1 mg/LJan, Feb
Nitrogen, ammonia total [as N]30-day average≤ 3.1 mg/LNov
Nitrogen, ammonia total [as N]30-day average≤ 3.6 mg/LDec
Nitrogen, ammonia total [as N]30-day average≤ 3 mg/LMar
Nitrogen, ammonia total [as N]30-day average≤ 1.9 mg/LApr
Nitrogen, ammonia total [as N]30-day average≤ 1.4 mg/LMay
Nitrogen, ammonia total [as N]30-day average≤ 1.2 mg/LJun
Nitrogen, ammonia total [as N]30-day average≤ .9 mg/LJul
Nitrogen, ammonia total [as N]30-day average≤ 1 mg/LAug
Nitrogen, ammonia total [as N]30-day average≤ 1.1 mg/LSep
Nitrogen, ammonia total [as N]30-day average≤ 3 mg/LOct
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 mg/LNov
Nitrogen, ammonia total [as N]daily maximum≤ 17.6 mg/LDec
Nitrogen, ammonia total [as N]daily maximum≤ 14.5 mg/LMar
Nitrogen, ammonia total [as N]daily maximum≤ 10.8 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 7 mg/LMay
Nitrogen, ammonia total [as N]daily maximum≤ 6 mg/LJun
Nitrogen, ammonia total [as N]daily maximum≤ 4.2 mg/LJul
Nitrogen, ammonia total [as N]daily maximum≤ 4.6 mg/LAug
Nitrogen, ammonia total [as N]daily maximum≤ 5.4 mg/LSep
Nitrogen, ammonia total [as N]daily maximum≤ 18.3 mg/LOct
Phosphorus, total [as P]daily maximumreport only (mg/L)all year
Hardness, total [as CaCO3]daily minimumreport only (mg/L)all year
Hardness, total [as CaCO3]30-day averagereport only (mg/L)all year
Selenium, total recoverable30-day averagereport only (ug/L)all year
Selenium, total recoverabledaily maximumreport only (ug/L)all year
Selenium, total recoverable30-day averagereport only (ug/L)all year
Selenium, total recoverabledaily maximumreport only (ug/L)all year
Copper, total recoverable30-day average≤ 30.5 ug/Lall year
Copper, total recoverabledaily maximum≤ 51.7 ug/Lall year
Copper, total recoverable30-day averagereport only (ug/L)all year
Copper, total recoverabledaily maximumreport only (ug/L)all year
E. coli, colony forming units [CFU]30-day geometric mean≤ 630 #/100mLMay–Sep
E. coli, colony forming units [CFU]daily maximum≤ 1178 #/100mLMay–Sep
Flow, totalmonthly totalreport only (Mgal)all year
Duration of dischargemonthly totalreport only (d)all year

How strict are these limits?

Cited limits by parameter: South Dakota'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/SD0020079 · MCP: https://passage-data.com/mcp