Commonwealth of Northern Mariana Islands - Department of Public Lands

NPDES permit MP0020371 · Minor POTW · effective, expires 2030-08-31 · 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.

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

19values over a limit
141required values missing, on 15 form(s)
7of 21 forms filed late

Last period with anything received: 2026-03-31. Most often over: pH (6), Copper, total recoverable (6), Cyanide, total [as CN] (4).

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 (124)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeMO AVG report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001Temperature, water deg. centigradeDAILY MX report only all year
001TurbidityMO AVG report only all year
001TurbidityMO AVG report only all year
001TurbidityDAILY MX report only all year
001TurbidityDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
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. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 1.3 lb/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 1.3 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 1.9 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 1.9 lb/d all year
001pHMINIMUM >= 7.6 SU all year
001pHMINIMUM >= 7.6 SU all year
001pHMAXIMUM <= 8.6 SU all year
001pHMAXIMUM <= 8.6 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 1.3 lb/d all year
001Solids, total suspendedMO AVG <= 1.3 lb/d all year
001Solids, total suspendedWKLY AVG <= 1.9 lb/d all year
001Solids, total suspendedWKLY AVG <= 1.9 lb/d all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Ammonia, unionizedMO AVG report only all year
001Ammonia, unionizedMO AVG report only all year
001Ammonia, unionizedDAILY MX report only all year
001Ammonia, unionizedDAILY MX report only all year
001Nitrogen, nitrate total [as N]MO AVG report only all year
001Nitrogen, nitrate total [as N]MO AVG report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Nitrogen, nitrate total [as N]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Cyanide, total [as CN]MO AVG <= 1 ug/L all year
001Cyanide, total [as CN]MO AVG <= 1 ug/L all year
001Cyanide, total [as CN]DAILY MX <= 1 ug/L all year
001Cyanide, total [as CN]DAILY MX <= 1 ug/L all year
001Arsenic, total recoverableMO AVG <= 5 ug/L all year
001Arsenic, total recoverableMO AVG <= 5 ug/L all year
001Arsenic, total recoverableDAILY MX <= 5 ug/L all year
001Arsenic, total recoverableDAILY MX <= 5 ug/L all year
001Selenium, total recoverableMO AVG <= 71 ug/L all year
001Selenium, total recoverableMO AVG <= 71 ug/L all year
001Selenium, total recoverableDAILY MX <= 291 ug/L all year
001Selenium, total recoverableDAILY MX <= 291 ug/L all year
001Nickel, total recoverableMO AVG <= 8.3 ug/L all year
001Nickel, total recoverableMO AVG <= 8.3 ug/L all year
001Nickel, total recoverableDAILY MX <= 75 ug/L all year
001Nickel, total recoverableDAILY MX <= 75 ug/L all year
001Zinc, total recoverableMO AVG <= 86 ug/L all year
001Zinc, total recoverableMO AVG <= 86 ug/L all year
001Zinc, total recoverableDAILY MX <= 95 ug/L all year
001Zinc, total recoverableDAILY MX <= 95 ug/L all year
001Copper, total recoverableMO AVG <= 3.7 ug/L all year
001Copper, total recoverableMO AVG <= 3.7 ug/L all year
001Copper, total recoverableDAILY MX <= 5.8 ug/L all year
001Copper, total recoverableDAILY MX <= 5.8 ug/L all year
001Phosphate, ortho [as P]MO AVG report only all year
001Phosphate, ortho [as P]MO AVG report only all year
001Phosphate, ortho [as P]DAILY MX report only all year
001Phosphate, ortho [as P]DAILY MX report only all year
001Manganese, total recoverableMO AVG <= 50 ug/L all year
001Manganese, total recoverableMO AVG <= 50 ug/L all year
001Manganese, total recoverableDAILY MX <= 100 ug/L all year
001Manganese, total recoverableDAILY MX <= 100 ug/L all year
001Flow, in conduit or thru treatment plantMO 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
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualMO AVG <= 7.5 ug/L all year
001Chlorine, total residualMO AVG <= 7.5 ug/L all year
001Chlorine, total residualDAILY MX <= 13 ug/L all year
001Chlorine, total residualDAILY MX <= 13 ug/L all year
001Suspended Solids, TotalDAILY MX <= 5 mg/L all year
001Suspended Solids, TotalDAILY MX <= 5 mg/L all year
001EnterococciMO AVG <= 35 MPN/100mL all year
001EnterococciMO AVG <= 35 MPN/100mL all year
001EnterococciDAILY MX <= 130 MPN/100mL all year
001EnterococciDAILY MX <= 130 MPN/100mL all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
STN1Temperature, water deg. centigradeMO AVG report only all year
STN1Temperature, water deg. centigradeMO AVG report only all year
STN1Oxygen, dissolved [DO]MO AVG report only all year
STN1Oxygen, dissolved [DO]MO AVG report only all year
STN1pHMINIMUM report only all year
STN1pHMINIMUM report only all year
STN1pHMAXIMUM report only all year
STN1pHMAXIMUM report only all year
STN1EnterococciMO AVG report only all year
STN1EnterococciMO AVG report only all year
STN2Temperature, water deg. centigradeMO AVG report only all year
STN2Temperature, water deg. centigradeMO AVG report only all year
STN2Oxygen, dissolved [DO]MO AVG report only all year
STN2Oxygen, dissolved [DO]MO AVG report only all year
STN2pHMINIMUM report only all year
STN2pHMINIMUM report only all year
STN2pHMAXIMUM report only all year
STN2pHMAXIMUM report only all year
STN2EnterococciMO AVG report only all year
STN2EnterococciMO AVG report only all year
STN3Temperature, water deg. centigradeMO AVG report only all year
STN3Temperature, water deg. centigradeMO AVG report only all year
STN3Oxygen, dissolved [DO]MO AVG report only all year
STN3Oxygen, dissolved [DO]MO AVG report only all year
STN3pHMINIMUM report only all year
STN3pHMINIMUM report only all year
STN3pHMAXIMUM report only all year
STN3pHMAXIMUM report only all year
STN3EnterococciMO AVG report only all year
STN3EnterococciMO 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