City of Mount Vernon

NPDES permit GA0033758 · Minor POTW · effective, expires 2028-01-31 · EPA's file as of 2026-09-19

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

2values over a limit
15required values missing, on 3 form(s)
1of 22 forms filed late

Last period with anything received: 2026-06-30. Most often over: Flow, in conduit or thru treatment plant (2).

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (52)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]DAILY MN >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 15 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 22.5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 34 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 42 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG report only all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 68 lb/d all year
001Solids, total suspendedWKLY AVG <= 84 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, organic total [as N]MO AVG report only all year
001Nitrogen, ammonia total [as N]MO AVG <= 2.2 mg/L all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 3.3 mg/L all year
001Nitrogen, ammonia total [as N]MO AVG <= 5 lb/d all year
001Nitrogen, ammonia total [as N]WKLY AVG <= 6.2 lb/d all year
001Nitrogen, Kjeldahl, total [as N]MO AVG report only all year
001Nitrite + Nitrate total [as N]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphate, ortho [as P]MO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG <= .27 MGD all year
001Flow, in conduit or thru treatment plantWKLY AVG <= .34 MGD all year
001Chlorine, total residualDAILY MX <= .01 mg/L all year
001E. coliMOAV GEO <= 126 #/100mL all year
001E. coliWE <= 410 #/100mL all year
001Solids, sludge, total, dry weightMO TOTAL report only all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
002Temperature, water deg. fahrenheitMINIMUM report only May, Jun, Jul, Aug, Sep, Oct
002Temperature, water deg. fahrenheitMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct
002Oxygen, dissolved [DO]MINIMUM report only May, Jun, Jul, Aug, Sep, Oct
002pHMINIMUM report only May, Jun, Jul, Aug, Sep, Oct
002pHMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct
003Temperature, water deg. fahrenheitMINIMUM report only May, Jun, Jul, Aug, Sep, Oct
003Temperature, water deg. fahrenheitMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct
003Oxygen, dissolved [DO]MINIMUM report only May, Jun, Jul, Aug, Sep, Oct
003pHMINIMUM report only May, Jun, Jul, Aug, Sep, Oct
003pHMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct
004Temperature, water deg. fahrenheitMINIMUM report only May, Jun, Jul, Aug, Sep, Oct
004Temperature, water deg. fahrenheitMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct
004Oxygen, dissolved [DO]MINIMUM report only May, Jun, Jul, Aug, Sep, Oct
004pHMINIMUM report only May, Jun, Jul, Aug, Sep, Oct
004pHMAXIMUM report only May, Jun, Jul, Aug, Sep, Oct

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