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Prasa Carolina RWWTP

Sewage treatment plant, major discharger, San Juan, Puerto Rico. NPDES permit PR0023752 expired Oct 31, 2025; its limits still apply. Last 12 months: no values over a limit, 3 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (37 values), form Q quarterly, form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 7 of 17 reports late

Limits in force (48)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 32.2 deg Call year
Temperature, water deg. centigradedaily maximum≤ 32 deg Call year
Turbiditydaily maximum≤ 169 NTUall year
Color [PT-CO units]daily maximum≤ 85 col unit (pc)all year
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 130 mg/Lall year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly average≤ 22166 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 44332 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≤ 70 mg/Lall year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly average≤ 11935 kg/dall year
Solids, total suspendedweekly average≤ 23870 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≤ 50000 ug/Lall year
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximum≤ 57.96 ug/Lall year
Lead, total [as Pb]daily maximum≤ 8.52 ug/Lall year
Thallium, total [as Tl]daily maximum≤ 2.09 ug/Lall year
Nickel, total [as Ni]daily maximum≤ 8.28 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 475.06 ug/Lall year
Surfactants [MBAS]daily maximum≤ 7032 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≤ 90 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 500 ug/Lall year
Cyanide, free availabledaily maximum≤ 7.6 ug/Lall year
Sulfide-hydrogen sulfide [undissociated]daily maximum≤ 726.1 ug/Lall year
Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)minimumreport only (%)all year
Enterococcigeometric meanreport only (#/100mL)all year
Enterococci90th percentilereport only (#/100mL)all year
Mercury, total [as Hg]daily maximum≤ .242 ug/Lall year
BOD, 5-day, percent removalmonthly average minimum≥ 30 %all year
Solids, suspended percent removalmonthly average minimum≥ 60 %all year
% Effect Static Chronic Arbacia punctulataminimum≥ .8648 %all year
NOAEL Static 48Hr Acute Cyprinodon variegatusminimumreport only (%)all year
NOEC Sub-Lethal Static Renewal 7 Day Chronic Cyprinodeon variegatusminimumreport only (%)all year
% Growth Reduction Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)minimumreport only (%)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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PR0023752 · MCP: https://passage-data.com/mcp