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Prasa Caguas WWTP

Sewage treatment plant, major discharger, Caguas, Puerto Rico. NPDES permit PR0025976, in force until Nov 30, 2027. Last 12 months: over a limit 15 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (34 values), form Y yearly
Renewal application due
Jun 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
18 values over a limit, 0 required values missing, 0 of 13 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, 5-day, 20 deg. C, weekly average99 mg/L≤ 45 mg/L120%
October 2025BOD, 5-day, percent removal, monthly average minimum84 %≥ 85 %7%
October 2025Solids, total suspended, weekly average80 mg/L≤ 45 mg/L78%
November 2025BOD, 5-day, 20 deg. C, weekly average63 mg/L≤ 45 mg/L40%
December 2025Solids, total suspended, monthly average53 mg/L≤ 30 mg/L77%
December 2025Solids, total suspended, weekly average10194 kg/d≤ 6812.1 kg/d50%
December 2025Solids, total suspended, weekly average251 mg/L≤ 45 mg/L458%
February 2026Ammonia & ammonium- total, daily maximum1.51 mg/L≤ .57 mg/L165%
May 2026Temperature, water deg. centigrade, daily maximum30.6 deg C≤ 30 deg C2%
June 2026Ammonia & ammonium- total, daily maximum4.81 mg/L≤ .57 mg/L744%
June 2026Color [PT-CO units], daily maximum20 col unit (pc)≤ 15 col unit (pc)—
June 2026Temperature, water deg. centigrade, daily maximum31.8 deg C≤ 30 deg C6%
July 2026Ammonia & ammonium- total, daily maximum4.49 mg/L≤ .57 mg/L688%
July 2026Temperature, water deg. centigrade, daily maximum32.45 deg C≤ 30 deg C8%
August 2026Temperature, water deg. centigrade, daily maximum32.35 deg C≤ 30 deg C8%

Limits in force (48)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 30 deg Call year
Turbiditydaily maximum≤ 50 NTUall year
Color [PT-CO units]daily maximum≤ 15 col unit (pc)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 29 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 4389.9 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 6812.1 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 4541.4 kg/dall year
Solids, total suspendedweekly average≤ 6812.1 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, settleabledaily maximumreport only (mL/L)all year
Oil & Greasedaily maximumreport only (mg/L)all year
Nitrogen, total [as N]daily maximum≤ 1700 ug/Lall year
Nitrogen, total [as N]daily maximumreport only (ug/L)all year
Phosphorus, total [as P]daily maximum≤ 160 ug/Lall year
Phosphorus, total [as P]daily maximum≤ 3000 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 4 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 6.9 ug/Lall year
Sulfate, total [as SO4]daily maximumreport only (mg/L)all year
Chromium, hexavalent [as Cr]daily maximum≤ 11.4 ug/Lall year
Copper, total [as Cu]daily maximum≤ 9 ug/Lall year
Copper, total [as Cu]daily maximum≤ 32.7 ug/Lall year
Surfactants [MBAS]daily maximum≤ 100 ug/Lall year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximum≤ 40 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 11 ug/Lall year
Sulfide-hydrogen sulfide [undissociated]daily maximum≤ 2 ug/Lall year
Whole Effluent Toxicity [WET] - P. promelasminimumreport only (%)all year
Whole Effluent Toxicity [WET] - D. magnaminimumreport only (%)all year
Enterococcigeometric mean≤ 35 #/100mLall year
Enterococcigeometric meanreport only (#/100mL)all year
Enterococci90th percentile≤ 130 #/100mLall year
Enterococci90th percentilereport only (#/100mL)all year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year
Ammonia & ammonium- totaldaily maximum≤ .57 mg/Lall year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PR0025976 · MCP: https://passage-data.com/mcp