City of Tybee Island

NPDES permit GA0020061 · Major POTW · effective, expires 2028-03-31 · 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 12 forms filed late

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

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 (53)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MINIMUM >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 26 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 39 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMO AVG <= 223 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMO AVG <= 249 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CWKLY AVG <= 278 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CWKLY AVG <= 312 lb/d May, Jun, Jul, Aug, Sep
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 <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 26 mg/L May, Jun, Jul, Aug, Sep
001Solids, total suspendedWKLY AVG <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 39 mg/L May, Jun, Jul, Aug, Sep
001Solids, total suspendedMO AVG <= 223 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedMO AVG <= 249 lb/d May, Jun, Jul, Aug, Sep
001Solids, total suspendedWKLY AVG <= 278 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Solids, total suspendedWKLY AVG <= 312 lb/d May, Jun, Jul, Aug, Sep
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 <= 17.4 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 15.1 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]WKLY AVG <= 26.1 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 22.7 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]MO AVG <= 129 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 145 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]WKLY AVG <= 161 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]WKLY AVG <= 181 lb/d May, Jun, Jul, Aug, Sep
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 <= .89 MGD Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG <= 1.15 MGD May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantWKLY AVG <= 1.11 MGD Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Flow, in conduit or thru treatment plantWKLY AVG <= 1.44 MGD May, Jun, Jul, Aug, Sep
001Chlorine, total residualMAXIMUM <= .5 mg/L all year
001EnterococciMOAV GEO <= 35 #/100mL all year
001EnterococciWE <= 130 #/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
001NOEL Static Renewal 7Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MINIMUM report only all year
001Noel Statre 7Day Chronic MenidiaMINIMUM 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