PRASA VEGA BAJA STP

NPDES permit PR0021679 · Major POTW · effective, expires 2031-04-30 · 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.

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

18values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-07-31. Most often over: Enterococci (6), Solids, total dissolved (4), Ammonia & ammonium- total (3).

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 (49)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX <= 32.2 deg C all year
001TurbidityDAILY MX <= 50 NTU all year
001Color [PT-CO units]DAILY MX <= 15 col unit (pc) all year
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 5 mg/L all year
001BOD, 5-day, 20 deg. CMO AVG <= 12 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 <= 79 kg/d all year
001BOD, 5-day, 20 deg. CMO AVG <= 477 kg/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 716 kg/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 716 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 report only all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedMO AVG <= 477 kg/d all year
001Solids, total suspendedWKLY AVG <= 716 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 <= 1700 ug/L all year
001Phosphorus, total [as P]DAILY MX <= 160 ug/L all year
001Cyanide, total [as CN]DAILY MX report only all year
001Chromium, hexavalent [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX <= 13 ug/L all year
001Copper, total [as Cu]DAILY MX <= 29.94 ug/L all year
001Surfactants [MBAS]DAILY MX <= 100 ug/L all year
001Flow, in conduit or thru treatment plantWKLY AVG report only 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 <= 4.2 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Chlorine, total residualDAILY MX <= 11 ug/L all year
001Sulfide-hydrogen sulfide [undissociated]DAILY MX <= 2 ug/L all year
001Whole Effluent Toxicity [WET] - P. promelasMINIMUM report only all year
001Whole Effluent Toxicity [WET] - D. magnaMINIMUM report only all year
001EnterococciGEO MEAN <= 35 #/100mL all year
001Enterococci90TH % <= 130 #/100mL all year
001Mercury, total [as Hg]DAILY MX <= .05 ug/L all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Ammonia & ammonium- totalDAILY MX <= .3548 mg/L all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM report only all year
001NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMINIMUM 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