MISSISSIPPI POWER COMPANY, PLANT JACK WATSON

NPDES permit MS0002925 · Major NON-POTW · effective, expires 2027-03-31 · 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.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 67 forms filed late

Last period with anything received: 2026-07-31.

Reporting

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

Limits in force (67)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitDAILY MX report only all year
001pHMINIMUM report only all year
001pHMAXIMUM report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
002Temperature, water deg. fahrenheitMX WK AV <= 90 deg F all year
002pHMINIMUM report only all year
002pHMAXIMUM report only all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Chlorine, total residualMO AVG <= .0528 mg/L all year
002Chlorine, total residualDAILY MX <= .0915 mg/L all year
002Chlorine, total residualMO AVG report only all year
002Chlorine, total residualDAILY MX report only all year
002Chlorination durationMO AVG report only all year
002Chlorination durationDAILY MX <= 120 min all year
005pHMINIMUM >= 6 SU all year
005pHMAXIMUM <= 9 SU all year
005Solids, total suspendedMO AVG <= 30 mg/L all year
005Solids, total suspendedDAILY MX <= 100 mg/L all year
005Solids, total suspendedMO AVG report only all year
005Solids, total suspendedDAILY MX report only all year
005Oil & GreaseMO AVG <= 15 mg/L all year
005Oil & GreaseDAILY MX <= 20 mg/L all year
005Oil & GreaseMO AVG report only all year
005Oil & GreaseDAILY MX report only all year
005Flow, in conduit or thru treatment plantMO AVG report only all year
005Flow, in conduit or thru treatment plantDAILY MX report only all year
102pHMINIMUM >= 6 SU all year
102pHMAXIMUM <= 9 SU all year
102Solids, total suspendedMO AVG <= 30 mg/L all year
102Solids, total suspendedDAILY MX <= 100 mg/L all year
102Solids, total suspendedMO AVG report only all year
102Solids, total suspendedDAILY MX report only all year
102Oil & GreaseMO AVG <= 15 mg/L all year
102Oil & GreaseDAILY MX <= 20 mg/L all year
102Oil & GreaseMO AVG report only all year
102Oil & GreaseDAILY MX report only all year
102Flow, in conduit or thru treatment plantMO AVG report only all year
102Flow, in conduit or thru treatment plantDAILY MX report only all year
202pHMINIMUM >= 6 SU all year
202pHMAXIMUM <= 9 SU all year
202Solids, total suspendedMO AVG <= 30 mg/L all year
202Solids, total suspendedDAILY MX <= 100 mg/L all year
202Solids, total suspendedMO AVG report only all year
202Solids, total suspendedDAILY MX report only all year
202Oil & GreaseMO AVG <= 15 mg/L all year
202Oil & GreaseDAILY MX <= 20 mg/L all year
202Oil & GreaseMO AVG report only all year
202Oil & GreaseDAILY MX report only all year
202Flow, in conduit or thru treatment plantMO AVG report only all year
202Flow, in conduit or thru treatment plantDAILY MX report only all year
302pHMINIMUM >= 6 SU all year
302pHMAXIMUM <= 9 SU all year
302Zinc, total recoverableANNL AVG <= 1 mg/L all year
302Zinc, total recoverableANNL MAX <= 1 mg/L all year
302Chromium, total recoverableANNL AVG <= .2 mg/L all year
302Chromium, total recoverableANNL MAX <= .2 mg/L all year
302Flow, in conduit or thru treatment plantMO AVG report only all year
302Flow, in conduit or thru treatment plantDAILY MX report only all year
302Chlorine, free availableMO AVG <= .2 mg/L all year
302Chlorine, free availableDAILY MX <= .5 mg/L all year
302Chlorine, free availableMO AVG report only all year
302Chlorine, free availableDAILY MX report only all year
302Chlorination durationMO AVG report only all year
302Chlorination durationDAILY MX <= 120 min 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