PRASA MAYAGUEZ WWTP

NPDES permit PR0023795 · Major POTW · effective, expires 2030-07-31 · 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

0values over a limit
2required values missing, on 2 form(s)
0of 12 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 PR permits in EPA's filings — check your permit).

Limits in force (39)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX <= 31.9 deg C all year
001TurbidityDAILY MX <= 26 NTU all year
001Color [PT-CO units]DAILY MX report only all year
001Oxygen, dissolved [DO]INST MIN report only 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. CDAILY AV <= 3179 kg/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 4768 kg/d all year
001BOD, 5-day, 20 deg. CMO AVG report only all year
001BOD, 5-day, 20 deg. CWKLY AVG report only all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 3179 kg/d all year
001Solids, total suspendedWKLY AVG <= 4768 kg/d all year
001Solids, total suspendedMO AVG report only all year
001Solids, total suspendedWKLY AVG report only all year
001Solids, settleableDAILY MX report only all year
001Oil & GreaseDAILY MX report only all year
001Nitrogen, total [as N]DAILY MX <= 36430 ug/L all year
001Nitrogen, Kjeldahl, total [as N]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX <= 19.55 ug/L all year
001Flow, in conduit or thru treatment plantWKLY AVG report only 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 <= 28 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= 500 ug/L all year
001Cyanide, free availableDAILY MX <= 47.28 ug/L all year
001Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)MINIMUM report only all year
001EnterococciGEO MEAN report only all year
001Enterococci90TH % report only all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001% Effect Static Chronic Arbacia punctulataMINIMUM report only all year
001NOAEL Static 48Hr Acute Cyprinodon variegatusMINIMUM report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Cyprinodeon variegatusMINIMUM report only all year
001% Growth Reduction Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MINIMUM 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