GARRETT COUNTY SANITARY DISTRICT, INC.

NPDES permit MD0069418 · Minor NON-POTW · effective, expires 2031-05-31 · 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 22 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 MD permits in EPA's filings — check your permit).

Limits in force (90)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitMAXIMUM <= 68 deg F (alert) all year
001Temperature, water deg. fahrenheitMO AVG report only (alert) all year
001Temperature, water deg. fahrenheitMO AVG report only (alert) all year
001ConductivityMO AVG report only all year
001ConductivityMO AVG report only all year
001ConductivityMO AVG report only all year
001Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 8 mg/L all year
001BOD, 5-day, 20 deg. CMX WK AV <= 12 mg/L all year
001BOD, 5-day, 20 deg. CMX MO AV <= 1.7 lb/d all year
001BOD, 5-day, 20 deg. CMX WK AV <= 2.5 lb/d all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.5 SU all year
001Solids, total suspendedMX MO AV <= 10 mL/L all year
001Solids, total suspendedMX WK AV <= 15 mL/L all year
001Solids, total suspendedMX MO AV <= 2.1 lb/d all year
001Solids, total suspendedMO TOTAL report only all year
001Solids, total suspendedMX WK AV <= 3.1 lb/d all year
001Solids, total suspendedANNL MAX <= 1600 lb/yr all year
001Nitrogen, ammonia total [as N]MX MO AV <= .7 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= 1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= 2.1 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX DA AV <= 2.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX MO AV <= .1 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX MO AV <= .2 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MX DA AV <= .4 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MX DA AV <= .4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Benzo[a]pyreneMO AVG report only all year
001Dibenz[a,h]anthraceneMO AVG report only all year
0014,4'-DDTMO AVG report only all year
001AldrinMO AVG report only all year
001DieldrinMO AVG report only all year
001ToxapheneMO AVG report only all year
001Heptachlor epoxideMO AVG report only all year
001Polychlorinated biphenyls [PCBs]MO AVG report only all year
001HexachlorobenzeneMO AVG 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
001Chlorine, total residualMINIMUM >= .1 mg/L all year
001E. coliMAXIMUM <= 126 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
002Temperature, water deg. fahrenheitMO AVG report only all year
002Temperature, water deg. fahrenheitMAXIMUM <= 68 deg F all year
002Temperature, water deg. fahrenheitMO AVG report only all year
002Temperature, water deg. fahrenheitMO AVG report only all year
002ConductivityMO AVG report only all year
002ConductivityMO AVG report only all year
002ConductivityMO AVG report only all year
002Oxygen, dissolved [DO]MINIMUM >= 6 mg/L all year
002BOD, 5-day, 20 deg. CMX MO AV <= 8 mg/L all year
002BOD, 5-day, 20 deg. CMX WK AV <= 12 mg/L all year
002BOD, 5-day, 20 deg. CMX MO AV <= 1.7 lb/d all year
002BOD, 5-day, 20 deg. CMX WK AV <= 2.5 lb/d all year
002pHMINIMUM >= 6.5 SU all year
002pHMAXIMUM <= 8.5 SU all year
002Solids, total suspendedMX MO AV <= 10 mg/L all year
002Solids, total suspendedMX DA AV <= 15 mg/L all year
002Solids, total suspendedMX MO AV <= 2.1 lb/d all year
002Solids, total suspendedMO TOTAL report only all year
002Solids, total suspendedMX WK AV <= 3.1 lb/d all year
002Solids, total suspendedANNL MAX <= 1600 lb/yr all year
002Nitrogen, ammonia total [as N]MX MO AV <= 1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= .7 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 2.1 mg/L May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= 2.1 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX MO AV <= .1 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX MO AV <= .2 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Nitrogen, ammonia total [as N]MX DA AV <= .4 lb/d May, Jun, Jul, Aug, Sep, Oct
002Nitrogen, ammonia total [as N]MX DA AV <= .4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
002Benzo[a]pyreneMO AVG report only all year
002Dibenz[a,h]anthraceneMO AVG report only all year
0024,4'-DDTMO AVG report only all year
002AldrinMO AVG report only all year
002DieldrinMO AVG report only all year
002ToxapheneMO AVG report only all year
002Heptachlor epoxideMO AVG report only all year
002Polychlorinated biphenyls [PCBs]MO AVG report only all year
002HexachlorobenzeneMO AVG 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 residualMINIMUM >= .1 mg/L all year
002E. coliMAXIMUM <= 126 MPN/100mL all year
002BOD, 5-day, percent removalMO AV MN >= 85 % all year
002Solids, suspended percent removalMO AV MN >= 85 % 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