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Isleta Marina,Inc.

Hotels And Motels, Fajardo, Puerto Rico. NPDES permit PR0021539 expired Aug 31, 2025; its limits still apply. Last 12 months: over a limit 67 times (last March 2026), 168 required values missing, 5 of 10 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (21 values)
Last report on file
March 2026
Oct 2024 – Sep 2025
113 values over a limit, 126 required values missing, 10 of 12 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 67 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, daily maximum470 ug/L≤ 7.5 ug/L6167%
October 2025Enterococci, geometric mean63 #/100mL≤ 35 #/100mL80%
October 2025Nitrogen, total [as N], daily maximum15780 ug/L≤ 5000 ug/L216%
October 2025Solids, suspended percent removal, monthly average minimum83 %≥ 85 %13%
October 2025Sulfide, total [as S], daily maximum370 ug/L≤ 2 ug/L18400%
October 2025Temperature, water deg. centigrade, daily maximum30.1 deg C≤ 30 deg C0%
October 2025Turbidity, daily maximum13 NTU≤ 10 NTU—
October 2025pH, minimum6.4 SU≥ 7.3 SU—
November 2025Chlorine, total residual, daily maximum490 ug/L≤ 7.5 ug/L6433%
November 2025Enterococci, 90th percentile170 #/100mL≤ 130 #/100mL31%
November 2025Enterococci, geometric mean111 #/100mL≤ 35 #/100mL217%
November 2025Nitrogen, total [as N], daily maximum13100 ug/L≤ 5000 ug/L162%
November 2025Sulfide, total [as S], daily maximum26 ug/L≤ 2 ug/L1200%
November 2025Temperature, water deg. centigrade, daily maximum30.1 deg C≤ 30 deg C0%
November 2025pH, minimum6.8 SU≥ 7.3 SU—
December 2025BOD, 5-day, percent removal, monthly average minimum79 %≥ 85 %40%
December 2025BOD, 5-day, percent removal, monthly average minimum79 %≥ 85 %40%
December 2025Chlorine, total residual, daily maximum200 ug/L≤ 7.5 ug/L2567%
December 2025Chlorine, total residual, daily maximum200 ug/L≤ 7.5 ug/L2567%
December 2025Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
December 2025Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
December 2025Enterococci, geometric mean1400 #/100mL≤ 35 #/100mL3900%
December 2025Enterococci, geometric mean1400 #/100mL≤ 35 #/100mL3900%
December 2025Nitrogen, total [as N], daily maximum11600000 ug/L≤ 5000 ug/L—
December 2025Nitrogen, total [as N], daily maximum11600000 ug/L≤ 5000 ug/L—
December 2025Solids, suspended percent removal, monthly average minimum61 %≥ 85 %160%
December 2025Solids, suspended percent removal, monthly average minimum61 %≥ 85 %160%
December 2025Sulfide, total [as S], daily maximum120 ug/L≤ 2 ug/L5900%
December 2025Sulfide, total [as S], daily maximum120 ug/L≤ 2 ug/L5900%
December 2025pH, minimum6.5 SU≥ 7.3 SU—
January 2026Chlorine, total residual, daily maximum1040 ug/L≤ 7.5 ug/L13767%
January 2026Chlorine, total residual, daily maximum1040 ug/L≤ 7.5 ug/L13767%
January 2026Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
January 2026Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
January 2026Enterococci, geometric mean682 #/100mL≤ 35 #/100mL1849%
January 2026Enterococci, geometric mean682 #/100mL≤ 35 #/100mL1849%
January 2026Nitrogen, total [as N], daily maximum8390 ug/L≤ 5000 ug/L68%
January 2026Nitrogen, total [as N], daily maximum8390 ug/L≤ 5000 ug/L68%
January 2026Oxygen, dissolved [DO], instantaneous minimum3 mg/L≥ 5 mg/L40%
January 2026Oxygen, dissolved [DO], instantaneous minimum3 mg/L≥ 5 mg/L40%
January 2026Sulfide, total [as S], daily maximum200 ug/L≤ 2 ug/L9900%
January 2026Sulfide, total [as S], daily maximum200 ug/L≤ 2 ug/L9900%
January 2026pH, minimum7 SU≥ 7.3 SU—
February 2026Chlorine, total residual, daily maximum320 ug/L≤ 7.5 ug/L4167%
February 2026Chlorine, total residual, daily maximum320 ug/L≤ 7.5 ug/L4167%
February 2026Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
February 2026Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
February 2026Enterococci, geometric mean1116 #/100mL≤ 35 #/100mL3089%
February 2026Enterococci, geometric mean1116 #/100mL≤ 35 #/100mL3089%
February 2026Nitrogen, total [as N], daily maximum26140 ug/L≤ 5000 ug/L423%
February 2026Nitrogen, total [as N], daily maximum26140 ug/L≤ 5000 ug/L423%
February 2026Oxygen, dissolved [DO], instantaneous minimum3.4 mg/L≥ 5 mg/L32%
February 2026Oxygen, dissolved [DO], instantaneous minimum3.4 mg/L≥ 5 mg/L32%
February 2026Sulfide, total [as S], daily maximum230 ug/L≤ 2 ug/L11400%
February 2026Sulfide, total [as S], daily maximum230 ug/L≤ 2 ug/L11400%
February 2026pH, minimum6.3 SU≥ 7.3 SU—
March 2026Chlorine, total residual, daily maximum230 ug/L≤ 7.5 ug/L2967%
March 2026Chlorine, total residual, daily maximum230 ug/L≤ 7.5 ug/L2967%
March 2026Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
March 2026Enterococci, 90th percentile1600 #/100mL≤ 130 #/100mL1131%
March 2026Enterococci, geometric mean831 #/100mL≤ 35 #/100mL2274%
March 2026Enterococci, geometric mean831 #/100mL≤ 35 #/100mL2274%
March 2026Nitrogen, total [as N], daily maximum26618 ug/L≤ 5000 ug/L432%
March 2026Nitrogen, total [as N], daily maximum26618 ug/L≤ 5000 ug/L432%
March 2026Sulfide, total [as S], daily maximum550 ug/L≤ 2 ug/L27400%
March 2026Sulfide, total [as S], daily maximum550 ug/L≤ 2 ug/L27400%
March 2026pH, minimum6.6 SU≥ 7.3 SU—

Limits in force (21)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 30 deg Call year
Turbiditydaily maximum≤ 10 NTUall year
Color [PT-CO units]daily maximumreport only (col unit (pc))all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
pHminimum≥ 7.3 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, settleabledaily maximumreport only (mL/L)all year
Oil & Greasedaily maximumreport only (mg/L)all year
Nitrogen, total [as N]daily maximum≤ 5000 ug/Lall year
Sulfide, total [as S]daily maximum≤ 2 ug/Lall year
Surfactants [MBAS]daily maximum≤ 500 ug/Lall year
Flow, in conduit or thru treatment plantdaily maximum≤ .1 MGDall year
Chlorine, total residualdaily maximum≤ 7.5 ug/Lall year
Enterococcigeometric mean≤ 35 #/100mLall year
Enterococci90th percentile≤ 130 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: we hold no rule of Puerto Rico's own; the federal ones.

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