COLUMBIA WATER AND LIGHT

NPDES permit MO0136034 · Minor NON-POTW · administratively continued, expires 2019-09-30 · 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 2019-09-30 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

0values over a limit
0required values missing, on 0 form(s)
0of 14 forms filed late

Last period with anything received: 2026-06-30.

Reporting

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

Limits in force (110)

OutfallParameterStatisticLimitMonths
001pHDAILY MX report only all year
001pHDAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, ammonia total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Arsenic, total [as As]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Molybdenum, total [as Mo]DAILY MX report only all year
001Molybdenum, total [as Mo]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
002Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY MX report only all year
002Solids, settleableDAILY MX <= 1 mL/L all year
002Oil and grease [soxhlet extr.] tot.DAILY MX <= 10 mg/L all year
002Nitrogen, total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Phosphorus, total [as P]DAILY MX report only all year
002Cyanide, free [amenable to chlorination]DAILY MX report only all year
002Hardness, total [as CaCO3]DAILY MX report only all year
002Fluoride, total [as F]DAILY MX report only all year
002Iron, total recoverableDAILY MX <= 1639 ug/L all year
002Selenium, total recoverableDAILY MX report only all year
002Thallium, total recoverableDAILY AV report only all year
002Beryllium, total recoverable [as Be]DAILY MX report only all year
002Silver total recoverableDAILY MX report only all year
002Aluminum, total recoverableDAILY MX <= 750 ug/L all year
002Cadmium, total recoverableDAILY MX report only all year
002Lead, total recoverableDAILY MX report only all year
002Copper, total recoverableDAILY MX report only all year
002Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
002RainfallDAILY MX report only all year
002Chlorine, total residualDAILY MX <= 17 ug/L all year
002Mercury, total recoverableDAILY MX report only all year
002Storm water flowDAILY MX report only all year
003Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
003pHMINIMUM >= 6.5 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY MX report only all year
003Solids, settleableDAILY MX <= 1 mL/L all year
003Oil and grease [soxhlet extr.] tot.DAILY MX <= 10 mg/L all year
003Nitrogen, total [as N]DAILY MX report only all year
003Nitrogen, ammonia total [as N]DAILY MX report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Cyanide, free [amenable to chlorination]DAILY MX report only all year
003Hardness, total [as CaCO3]DAILY MX report only all year
003Fluoride, total [as F]DAILY MX report only all year
003Iron, total recoverableDAILY MX <= 1639 ug/L all year
003Selenium, total recoverableDAILY MX report only all year
003Thallium, total recoverableDAILY MX report only all year
003Beryllium, total recoverable [as Be]DAILY MX report only all year
003Silver total recoverableDAILY MX report only all year
003Aluminum, total recoverableDAILY MX <= 750 ug/L all year
003Cadmium, total recoverableDAILY MX report only all year
003Lead, total recoverableDAILY MX report only all year
003Copper, total recoverableDAILY MX report only all year
003Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
003RainfallDAILY MX report only all year
003Chlorine, total residualDAILY MX <= 17 ug/L all year
003Mercury, total recoverableDAILY MX report only all year
003Storm water flowDAILY MX report only all year
004Oxygen demand, chem. [high level] [COD]DAILY MX report only all year
004pHMINIMUM >= 6.5 SU all year
004pHMAXIMUM <= 9 SU all year
004Solids, total suspendedDAILY MX report only all year
004Solids, settleableDAILY MX <= 1 mL/L all year
004Oil and grease [soxhlet extr.] tot.DAILY MX <= 10 mg/L all year
004Nitrogen, total [as N]DAILY MX report only all year
004Nitrogen, ammonia total [as N]DAILY MX report only all year
004Phosphorus, total [as P]DAILY MX report only all year
004Cyanide, free [amenable to chlorination]DAILY MX report only all year
004Hardness, total [as CaCO3]DAILY MX report only all year
004Fluoride, total [as F]DAILY MX report only all year
004Iron, total recoverableDAILY MX <= 1639 ug/L all year
004Selenium, total recoverableDAILY MX report only all year
004Thallium, total recoverableDAILY MX report only all year
004Beryllium, total recoverable [as Be]DAILY MX report only all year
004Silver total recoverableDAILY MX report only all year
004Aluminum, total recoverableDAILY MX <= 750 ug/L all year
004Cadmium, total recoverableDAILY MX report only all year
004Lead, total recoverableDAILY MX report only all year
004Copper, total recoverableDAILY MX report only all year
004Chromium, hexavalent dissolved [as Cr]DAILY MX report only all year
004RainfallDAILY MX report only all year
004Chlorine, total residualDAILY MX <= 17 ug/L all year
004Mercury, total recoverableDAILY MX report only all year
004Storm water flowDAILY 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