Halstad city of

NPDES permit MN0020770 · Minor POTW · administratively continued, expires 2024-09-30 · 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 2024-09-30 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

2values over a limit
3required values missing, on 3 form(s)
2of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Solids, suspended percent removal (1), pH (1).

Reporting

Reports are due about 47 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (35)

OutfallParameterStatisticLimitMonths
D005Oxygen, dissolved [DO]MO MIN report only all year
D005pHMO MIN >= 6 SU all year
D005pHMO MAX <= 9 SU all year
D005Solids, total suspendedMO AVG <= 30 mg/L all year
D005Solids, total suspendedMX WK AV <= 45 mg/L all year
D005Solids, total suspendedMO AVG <= 12.9 kg/d all year
D005Solids, total suspendedMX WK AV <= 19.4 kg/d all year
D005Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D005Nitrogen, ammonia total [as N]MO AVG report only Mar, Sep
D005Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D005Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
D005Phosphorus, total [as P]MO AVG report only all year
D005Phosphorus, total [as P]MO AVG report only all year
D005Coliform, fecal MPN + membrane ftl 44.5 CMO GEOMN <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
D005Flow, in conduit or thru treatment plantMO AVG report only all year
D005Flow, in conduit or thru treatment plantMO MAX report only all year
D005Flow, in conduit or thru treatment plantMO TOTAL report only all year
D005Solids, total dissolvedMO AVG report only Mar, Sep
D005BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L all year
D005BOD, carbonaceous [5 day, 20 C]MX WK AV <= 40 mg/L all year
D005BOD, carbonaceous [5 day, 20 C]MO AVG <= 10.8 kg/d all year
D005BOD, carbonaceous [5 day, 20 C]MX WK AV <= 17.3 kg/d all year
D005BOD, carb-5 day, 20 deg C, percent removalMO AV MN >= 85 % all year
D005Solids, suspended percent removalMO AV MN >= 85 % all year
S006Precipitation, total defined period/inMO TOTAL report only all year
S006pHMO MIN report only all year
S006pHMO MAX report only all year
S006Solids, total suspendedMO AVG report only all year
S006Solids, total suspendedMO MAX report only all year
S006Nitrogen, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S006Nitrogen, Kjeldahl, total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S006Nitrite + Nitrate total [as N]QRTR AVG report only Mar, Jun, Sep, Dec
S006Phosphorus, total [as P]MO AVG 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

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