GREATER LAWRENCE SANITARY DISTRICT

NPDES permit MA0100447 · Major POTW · administratively continued, expires 2024-11-30 · 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 2024-11-30 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 81 forms filed late

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

Reporting

Reports are due about 15 days after each monitoring period ends (the most common figure among MA permits in EPA's filings — check your permit).

Limits in force (82)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX report only Jan, Apr, Jul, Oct
001Oxygen, dissolved [DO]MINIMUM >= 5 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 50 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 13000 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 19516 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001pHMINIMUM >= 6.5 SU all year
001pHMAXIMUM <= 8.3 SU all year
001pHMAXIMUM report only Jan, Apr, Jul, Oct
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedDAILY MX <= 50 mg/L all year
001Solids, total suspendedMO AVG <= 13010 lb/d all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedWKLY AVG <= 19516 lb/d all year
001Solids, total suspendedMO AVG report only all year
001Nitrogen, total [as N]MO AVG report only Jan, Feb, Mar, Nov, Dec
001Nitrogen, total [as N]MO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, total [as N]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, Kjeldahl, total [as N]MO AVG report only Jan, Feb, Mar, Nov, Dec
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]MO AVG report only Jan, Feb, Mar, Nov, Dec
001Nitrite + Nitrate total [as N]MO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Nitrite + Nitrate total [as N]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Jan, Feb, Mar, Nov, Dec
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]MO AVG <= 240 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Phosphorus, total [as P]DAILY MX report only Apr, May, Jun, Jul, Aug, Sep, Oct
001Carbon, tot organic [TOC]DAILY MX report only Jan, Apr, Jul, Oct
001Carbon, tot organic [TOC]DAILY MX report only Jan, Apr, Jul, Oct
001Carbon, dissolved organic [as C]DAILY MX report only Jan, Apr, Jul, Oct
001Carbon, dissolved organic [as C]DAILY MX report only Jan, Apr, Jul, Oct
001Hardness, total [as CaCO3]DAILY MX report only Jan, Apr, Jul, Oct
001Hardness, total [as CaCO3]DAILY MX report only Jan, Apr, Jul, Oct
001Cadmium, total [as Cd]DAILY MX report only Jan, Apr, Jul, Oct
001Cadmium, total [as Cd]DAILY MX report only Jan, Apr, Jul, Oct
001Copper, total [as Cu]DAILY MX report only Jan, Apr, Jul, Oct
001Copper, total [as Cu]DAILY MX report only Jan, Apr, Jul, Oct
001Lead, total [as Pb]DAILY MX report only Jan, Apr, Jul, Oct
001Lead, total [as Pb]DAILY MX report only Jan, Apr, Jul, Oct
001Nickel, total [as Ni]DAILY MX report only Jan, Apr, Jul, Oct
001Nickel, total [as Ni]DAILY MX report only Jan, Apr, Jul, Oct
001Zinc, total [as Zn]DAILY MX report only Jan, Apr, Jul, Oct
001Zinc, total [as Zn]DAILY MX report only Jan, Apr, Jul, Oct
001Aluminum, total [as Al]DAILY MX report only Jan, Apr, Jul, Oct
001Aluminum, total [as Al]DAILY MX report only Jan, Apr, Jul, Oct
001Flow, in conduit or thru treatment plantROLL AVG <= 52 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Chlorine, total residualMO AV MN report only all year
001Chlorine, total residualDAILY MX report only all year
001Chlorine, total residualMO AVG <= 150 ug/L all year
001Chlorine, total residualDAILY MX <= 260 ug/L all year
001E. coli, colony forming units [CFU]MO GEO <= 126 CFU/100mL all year
001E. coli, colony forming units [CFU]DAILY MX <= 409 CFU/100mL all year
001Nitrogen, Ammonia TotalDAILY MX report only Jan, Apr, Jul, Oct
001Nitrogen, Ammonia TotalDAILY MX report only Jan, Apr, Jul, Oct
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001LC50 Static 48Hr Acute Ceriodaphnia dubiaDAILY MN >= 100 % Jan, Apr, Jul, Oct
001NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaDAILY MN report only Jan, Apr, Jul, Oct
002Number of EventsDAILY MX report only all year
002Duration of dischargeDAILY MX report only all year
002Flow, totalDAILY MX report only all year
003Number of EventsDAILY MX report only all year
003Duration of dischargeDAILY MX report only all year
003Flow, totalDAILY MX report only all year
004Number of EventsDAILY MX report only all year
004Duration of dischargeDAILY MX report only all year
004Flow, totalDAILY MX report only all year
005Number of EventsDAILY MX report only all year
005Duration of dischargeDAILY MX report only all year
005Flow, totalDAILY MX report only all year
006Number of EventsDAILY MX report only all year
006Duration of dischargeDAILY MX report only all year
006Flow, totalDAILY MX 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