Pipestone city of

NPDES permit MN0054801 · Minor POTW · effective, expires 2030-02-28 · 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

3values over a limit
0required values missing, on 0 form(s)
0of 99 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, carbonaceous [5 day, 20 C] (2), pH (1).

Reporting

Reports are due about 21 days after each monitoring period ends (the most common figure among MN permits in EPA's filings — check your permit).

Limits in force (74)

OutfallParameterStatisticLimitMonths
D001Specific conductanceMO MAX report only all year
D001Oxygen, dissolved [DO]MO MIN report only all year
D001pHMO MIN >= 6 SU all year
D001pHMO MAX <= 9 SU all year
D001Solids, total suspendedMO AVG <= 45 mg/L all year
D001Solids, total suspendedANNL MAX report only all year
D001Solids, total suspendedMX WK AV <= 65 mg/L all year
D001Solids, total suspendedMO AVG <= 1042 kg/d all year
D001Solids, total suspendedYA <= 37252 kg/yr all year
D001Solids, total suspendedMX WK AV <= 1506 kg/d all year
D001Nitrogen, total [as N]MO AVG report only all year
D001Nitrogen, ammonia total [as N]MO AVG report only all year
D001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
D001Nitrite + Nitrate total [as N]MO AVG report only all year
D001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
D001Phosphorus, total [as P]MO AVG <= 1 mg/L May, Jun, Jul, Aug, Sep
D001Phosphorus, total [as P]MO AVG report only Jan, Feb, Mar, Apr, Oct, Nov, Dec
D001Phosphorus, total [as P]MO AVG report only May, Jun, Jul, Aug, Sep
D001Phosphorus, total [as P]YA <= 1989 kg/yr all year
D001Chloride [as Cl]MO AVG <= 297 mg/L all year
D001Chloride [as Cl]DAILY MX <= 620 mg/L all year
D001Sulfate, total [as SO4]MO MAX report only all year
D001Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D001Flow, in conduit or thru treatment plantMO AVG report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D001Flow, in conduit or thru treatment plantMO AVG report only Jan, Feb, Jul, Aug
D001Flow, in conduit or thru treatment plantMO MAX report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D001Flow, in conduit or thru treatment plantMO MAX report only Jan, Feb, Jul, Aug
D001Flow, in conduit or thru treatment plantMO TOTAL report only Mar, Apr, May, Jun, Sep, Oct, Nov, Dec
D001Flow, in conduit or thru treatment plantMO TOTAL report only Jan, Feb, Jul, Aug
D001Solids, total dissolvedMO MAX report only all year
D001Mercury, dissolved [as Hg]ANNL MAX report only all year
D001Mercury, total [as Hg]ANNL MAX report only all year
D001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D001BOD, carbonaceous [5 day, 20 C]MO AVG <= 580 kg/d all year
D001BOD, carbonaceous [5 day, 20 C]YA <= 20696 kg/yr all year
D001BOD, carbonaceous [5 day, 20 C]MX WK AV <= 927 kg/d all year
S005Precipitation, total defined period/inMO TOTAL report only all year
S005pHQB report only Mar, Jun, Sep, Dec
S005Solids, total suspendedQRTR AVG report only Mar, Jun, Sep, Dec
S005Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S005Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S005Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S005Phosphorus, total [as P]QRTR AVG report only Mar, Jun, Sep, Dec
S005Flow, in conduit or thru treatment plantMO AVG report only all year
S005Flow, in conduit or thru treatment plantMO MAX report only all year
S005Flow, in conduit or thru treatment plantMO TOTAL report only all year
S005BOD, carbonaceous [5 day, 20 C]QRTR AVG report only Mar, Jun, Sep, Dec
S006pHMO MIN report only all year
S006pHMO MAX report only all year
S006Solids, total suspendedMO AVG report only all year
S006Nitrogen, total [as N]MO AVG report only all year
S006Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S006Nitrite + Nitrate total [as N]MO AVG report only all year
S006Phosphorus, total [as P]MO AVG report only all year
S006Phosphorus, total [as P]MO TOTAL report only all year
S006BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S006BOD, carbonaceous [5 day, 20 C]MO MAX report only all year
S007pHMO MIN report only all year
S007pHMO MAX report only all year
S007Solids, total suspendedMO AVG report only all year
S007Solids, total suspendedMO AVG report only all year
S007Solids, total suspendedMO TOTAL report only all year
S007Nitrogen, total [as N]MO AVG report only all year
S007Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
S007Nitrite + Nitrate total [as N]MO AVG report only all year
S007Phosphorus, total [as P]MO AVG report only all year
S007Phosphorus, total [as P]MO AVG report only all year
S007Phosphorus, total [as P]MO TOTAL report only all year
S007BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S007BOD, carbonaceous [5 day, 20 C]MO AVG report only all year
S007BOD, carbonaceous [5 day, 20 C]MO TOTAL report only all year
S007BOD, carb-5 day, 20 deg C, percent removalMO MIN report only all year
S007Solids, suspended percent removalMO 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