US BUREAU OF RECLAMATION

NPDES permit MT0022578 · Minor FEDERAL · administratively continued, expires 2026-08-31 · 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 2026-08-31 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

0values over a limit
0required values missing, on 0 form(s)
0of 100 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among MT permits in EPA's filings — check your permit).

Limits in force (78)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY MAX <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 2.3 lb/d all year
001BOD, 5-day, 20 deg. CWKLY MAX <= 3.4 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 2.3 lb/d all year
001Solids, total suspendedDAILY MX <= 3.4 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedDAILY MX report only all year
001Oil & GreaseQRTR AVG report only all year
001Oil & GreaseQB report only all year
001Nitrogen, total [as N]MO AVG report only Jul, Aug, Sep
001Nitrogen, total [as N]MX WK AV report only Jul, Aug, Sep
001Nitrogen, total [as N]MO AVG report only Jul, Aug, Sep
001Nitrogen, total [as N]MX WK AV report only Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]WKLY MAX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only Jul, Aug, Sep
001Nitrogen, Kjeldahl, total [as N]MX WK AV report only Jul, Aug, Sep
001Nitrite + Nitrate total [as N]MO AVG report only Jul, Aug, Sep
001Nitrite + Nitrate total [as N]MX WK AV report only Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG <= 1 mg/L Jul, Aug, Sep
001Phosphorus, total [as P]MX WK AV report only Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG <= .8 lb/d Jul, Aug, Sep
001Phosphorus, total [as P]MX WK AV report only Jul, Aug, Sep
001E. coli, MTEC-MFMOAV GEO <= 630 #/100mL Jan, Feb, Mar, Nov, Dec
001E. coli, MTEC-MFMOAV GEO <= 126 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, MTEC-MFMX WK AV <= 1260 #/100mL Jan, Feb, Mar, Nov, Dec
001E. coli, MTEC-MFMX WK AV <= 252 #/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001Chlorine, total residualMO AVG <= .1 mg/L all year
001Chlorine, total residualDAILY MX <= .1 mg/L all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
002Temperature, water deg. centigradeMO AVG report only all year
002Temperature, water deg. centigradeWKLY MAX report only all year
002Flow rateMO AVG report only all year
002Flow rateWKLY MAX report only all year
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002Oil & GreaseQRTR AVG report only all year
002Oil & GreaseQB report only all year
003Temperature, water deg. centigradeMO AVG report only all year
003Temperature, water deg. centigradeWKLY MAX report only all year
003Flow rateMO AVG report only all year
003Flow rateWKLY MAX report only all year
003pHMINIMUM report only all year
003pHMAXIMUM report only all year
003Oil & GreaseQRTR AVG report only all year
003Oil & GreaseQB report only all year
004ATemperature, water deg. centigradeDAILY MN report only all year
004ATemperature, water deg. centigradeMO AVG report only all year
004ATemperature, water deg. centigradeDAILY MX report only all year
004AFlow rateMO AVG report only all year
004AFlow rateDAILY MX report only all year
004BTemperature, water deg. centigradeDAILY MN report only all year
004BTemperature, water deg. centigradeMO AVG report only all year
004BTemperature, water deg. centigradeDAILY MX report only all year
004BFlow rateMO AVG report only all year
004BFlow rateDAILY MX report only all year
004CTemperature, water deg. centigradeDAILY MN report only all year
004CTemperature, water deg. centigradeMO AVG report only all year
004CTemperature, water deg. centigradeDAILY MX report only all year
004CFlow rateMO AVG report only all year
004CFlow rateDAILY MX report only all year
004DTemperature, water deg. centigradeDAILY MN report only all year
004DTemperature, water deg. centigradeMO AVG report only all year
004DTemperature, water deg. centigradeDAILY MX report only all year
004DFlow rateMO AVG report only all year
004DFlow rateDAILY MX 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