Royall Farms Thurmont WWTP

NPDES permit MD0058050 · Minor NON-POTW · administratively continued, expires 2026-08-31 · 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.

This permit expired on 2026-08-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

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

0values over a limit
0required values missing, on 0 form(s)
0of 11 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 (29)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitMX DA AV report only all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitMX DA AV report only all year
001Temperature, water deg. fahrenheitMO AVG report only all year
001Temperature, water deg. fahrenheitMX DA AV 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 <= 30 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 20 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 45 mg/L Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 30 mg/L May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX MO AV <= 2.5 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX MO AV <= 1.7 lb/d May, Jun, Jul, Aug, Sep
001BOD, 5-day, 20 deg. CMX WK AV <= 3.7 lb/d Jan, Feb, Mar, Apr, Oct, Nov, Dec
001BOD, 5-day, 20 deg. CMX WK AV <= 2.5 lb/d May, Jun, Jul, Aug, Sep
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 <= 2.5 lb/d all year
001Solids, total suspendedMX WK AV <= 3.7 lb/d all year
001Nitrogen, Kjeldahl, total [as N]MX MO AV <= 15 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, Kjeldahl, total [as N]MX WK AV <= 23 mg/L May, Jun, Jul, Aug, Sep
001Nitrogen, Kjeldahl, total [as N]MX MO AV <= 1.3 lb/d May, Jun, Jul, Aug, Sep
001Nitrogen, Kjeldahl, total [as N]MX WK AV <= 1.9 lb/d May, Jun, Jul, Aug, Sep
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001E. coliGX <= 126 MPN/100mL 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