TOWN OF ENNIS

NPDES permit MT0030732 · Minor POTW · administratively continued, expires 2019-04-30 · 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 2019-04-30 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

4values over a limit
0required values missing, on 0 form(s)
0of 21 forms filed late

Last period with anything received: 2026-07-31. Most often over: BOD, 5-day, 20 deg. C (4).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (44)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeSINGSAMP report only all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Flow rateMO AVG report only all year
001Flow rateDAILY MX report only all year
001Oxygen, dissolved [DO]SINGGRAB report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 25 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= 90 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHINST MIN >= 6 SU all year
001pHSINGSAMP report only all year
001pHINST MAX <= 9 SU all year
001Solids, total suspendedMO AVG <= 45 mg/L all year
001Solids, total suspendedMX WK AV <= 65 mg/L all year
001Solids, total suspendedMO AVG <= 85 lb/d all year
001Solids, total suspendedMX WK AV <= 130 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Oil and grease, hexane extr methodSINGGRAB 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 <= 30 mg/L all year
001Nitrogen, ammonia total [as N]SINGGRAB report only all year
001Nitrogen, ammonia total [as N]DAILY MX <= 42 mg/L all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only Jul, Aug, Sep
001Nitrite + Nitrate total [as N]MO AVG report only Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG report only Jul, Aug, Sep
001Phosphorus, total [as P]MN WK AV report only Jul, Aug, Sep
001Phosphorus, total [as P]MO AVG report only Jul, Aug, Sep
001Phosphorus, total [as P]MX WK AV report only Jul, Aug, Sep
001Arsenic, total recoverableSINGGRAB report only all year
001Zinc, total recoverableSINGGRAB report only all year
001Copper, total recoverableSINGGRAB report only all year
001E. coli, MTEC-MFMO AVG <= 126 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, MTEC-MFMO AVG <= 630 CFU/100mL Jan, Feb, Mar, Nov, Dec
001E. coli, MTEC-MFMX WK AV <= 252 CFU/100mL Apr, May, Jun, Jul, Aug, Sep, Oct
001E. coli, MTEC-MFMX WK AV <= 1260 CFU/100mL Jan, Feb, Mar, Nov, Dec
001Solids, total dissolved [TDS]SINGGRAB report only all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 65 % 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