GARRETT COUNTY SANITARY DISTRICT, INC.

NPDES permit MD0054348 · Major POTW · effective, expires 2031-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

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

6values over a limit
6required values missing, on 3 form(s)
4of 11 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (6).

Reporting

Reports are due about 28 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (67)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001Oxygen, dissolved [DO]DLYAVMIN >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX MO AV <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 125 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX MO AV <= 375 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 188 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMX WK AV <= 563 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMX MO AV <= 30 mg/L all year
001Solids, total suspendedMX WK AV <= 45 mg/L all year
001Solids, total suspendedMX MO AV <= 375 lb/d all year
001Solids, total suspendedMX WK AV <= 563 lb/d all year
001Solids, total suspendedANNL MAX <= 136800 lb/yr 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]MX MO AV <= 1.4 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= 2.8 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 4.7 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX DA AV <= 6.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= 18 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= 35 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 59 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX DA AV <= 76 lb/d Jan, Feb, Mar, Apr, Nov, Dec
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]MX MO AV <= .9 mg/L all year
001Phosphorus, total [as P]MX WK AV <= 1.4 mg/L all year
001Phosphorus, total [as P]MX MO AV <= 11 lb/d all year
001Phosphorus, total [as P]MX WK AV <= 18 lb/d all year
001Phosphorus, total [as P]ANNL MAX report only all year
001Hardness, total [as CaCO3]MH report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Hardness, total [as CaCO3]MH report only all year
001Hardness, total [as CaCO3]MO AVG report only all year
001Arsenic, total [as As]QRTR AVG report only Mar, Jun, Sep, Dec
001Copper, total recoverableMO AVG report only all year
001AcrylonitrileQRTR AVG report only Mar, Jun, Sep, Dec
001N-Nitrosodi-N-propylamineQRTR AVG report only Mar, Jun, Sep, Dec
001N-Nitrosodimethylamine [NDMA]QRTR AVG report only Mar, Jun, Sep, Dec
001BenzidineQRTR AVG report only Mar, Jun, Sep, Dec
0014,4'-DDTQRTR AVG report only Mar, Jun, Sep, Dec
001AldrinQRTR AVG report only Mar, Jun, Sep, Dec
001DieldrinQRTR AVG report only Mar, Jun, Sep, Dec
001ToxapheneQRTR AVG report only Mar, Jun, Sep, Dec
001HexachlorobenzeneQRTR AVG 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
001ChlordaneQRTR AVG report only Mar, Jun, Sep, Dec
001E. coliMO GEOMN <= 126 MPN/100mL all year
0012,4-D SALTS AND ESTERSQRTR AVG report only Mar, Jun, Sep, Dec
001PCBs Dry Weather AnalysisQRTR AVG report only Mar, Jun, Sep, Dec
001Phosphorous, in total orthophosphateMO AVG report only all year
001Phosphorous, in total orthophosphateMO AVG report only all year
001BOD, 5-day, percent removalMINIMUM >= 85 % all year
001Solids, suspended percent removalMINIMUM >= 85 % all year
001Flow, totalMO TOTAL report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101BOD, 5-day, 20 deg. CMO AVG report only all year
101Solids, total suspendedMO AVG report only all year
101Solids, total suspendedMO AVG 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