CITY OF KETCHUM

NPDES permit ID0020281 · Major POTW · administratively continued, expires 2017-07-31 · 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 2017-07-31 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 12 forms filed late

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

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among ID permits in EPA's filings — check your permit).

Limits in force (56)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Temperature, water deg. centigradeMO AVG report only Jan, Feb, Mar, Nov, Dec
001Temperature, water deg. centigradeDAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Temperature, water deg. centigradeDAILY MX report only Jan, Feb, Mar, Nov, Dec
001Oxygen, dissolved [DO]MO AVG report only all year
001Oxygen, dissolved [DO]DAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 505 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 760 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHINST MIN >= 6.2 SU all year
001pHINST MAX <= 9 SU all year
001Alkalinity, total [as CaCO3]MO AVG report only Mar, Jun, Sep, Dec
001Alkalinity, total [as CaCO3]DAILY MX report only Mar, Jun, Sep, Dec
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 275 lb/d all year
001Solids, total suspendedANNL AVG <= 145 lb/d all year
001Solids, total suspendedWKLY AVG <= 542 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only Mar, Jun, Sep, Dec
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only Mar, Jun, Sep, Dec
001Nitrite + Nitrate total [as N]MO AVG report only Mar, Jun, Sep, Dec
001Nitrite + Nitrate total [as N]DAILY MX report only Mar, Jun, Sep, Dec
001Phosphorus, total [as P]MO AVG <= 1 mg/L all year
001Phosphorus, total [as P]WKLY AVG <= 1.5 mg/L all year
001Phosphorus, total [as P]MO AVG <= 9.9 lb/d all year
001Phosphorus, total [as P]WKLY AVG <= 14.9 lb/d all year
001Hardness, total [as CaCO3]MO AVG report only Mar, Jun, Sep, Dec
001Hardness, total [as CaCO3]DAILY MX report only Mar, Jun, Sep, Dec
001Zinc, total recoverableMO AVG report only Mar, Jun, Sep, Dec
001Zinc, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Cadmium, total recoverableMO AVG report only Mar, Jun, Sep, Dec
001Cadmium, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001Copper, total recoverableMO AVG <= 19.2 ug/L all year
001Copper, total recoverableDAILY MX <= 35.1 ug/L all year
001Copper, total recoverableMO AVG <= .64 lb/d all year
001Copper, total recoverableDAILY MX <= 1.17 lb/d all year
001Oil and greaseMO AVG report only Mar, Jun, Sep, Dec
001Oil and greaseDAILY MX report only Mar, Jun, Sep, Dec
001Phosphate, ortho [as P]MO AVG report only Mar, Jun, Sep, Dec
001Phosphate, ortho [as P]DAILY MX report only Mar, Jun, Sep, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001E. coliMO GEO <= 126 #/100mL all year
001E. coliINST MAX <= 406 #/100mL all year
001E. coliMO GEO <= 19.1 BCFU/d all year
001Solids, total dissolvedMO AVG report only Mar, Jun, Sep, Dec
001Solids, total dissolvedDAILY MX report only Mar, Jun, Sep, Dec
001Mercury, total recoverableMO AVG report only Mar, Jun, Sep, Dec
001Mercury, total recoverableDAILY MX report only Mar, Jun, Sep, Dec
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % 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