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PRASA Corozal WTP

Water Supply, Corozal, Puerto Rico. NPDES permit PR0022624, in force until Apr 30, 2031. Last 12 months: over a limit 15 times (last August 2026), 3 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (16 values), form Q quarterly, form S twice a year, form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
2 values over a limit, 6 required values missing, 0 of 18 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, daily maximum470 ug/L≤ 11 ug/L4173%
November 2025Chlorine, total residual, daily maximum240 ug/L≤ 11 ug/L2082%
November 2025Phosphorus, total [as P], daily maximum16590 ug/L≤ 12700 ug/L31%
December 2025Chlorine, total residual, daily maximum260 ug/L≤ 11 ug/L2264%
January 2026Chlorine, total residual, daily maximum240 ug/L≤ 11 ug/L2082%
February 2026Chlorine, total residual, daily maximum210 ug/L≤ 11 ug/L1809%
March 2026Chlorine, total residual, daily maximum1020 ug/L≤ 11 ug/L9173%
April 2026Chlorine, total residual, daily maximum160 ug/L≤ 11 ug/L1355%
May 2026Chlorine, total residual, daily maximum1630 ug/L≤ 11 ug/L14718%
June 2026Chlorine, total residual, daily maximum670 ug/L≤ 11 ug/L5991%
July 2026Chlorine, total residual, daily maximum290 ug/L≤ 11 ug/L2536%
July 2026Enterococci, 90th percentile1255 #/100mL≤ 130 #/100mL865%
July 2026Nitrogen, total [as N], daily maximum1970 ug/L≤ 1700 ug/L16%
July 2026Temperature, water deg. centigrade, daily maximum30.6 deg C≤ 30 deg C2%
August 2026Enterococci, 90th percentile1220 #/100mL≤ 130 #/100mL838%

Limits in force (32)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 30 deg Call year
Turbiditydaily maximum≤ 50 NTUall year
Turbiditydaily maximum≤ 5646 NTUall year
Color [PT-CO units]daily maximum≤ 15 col unit (pc)all year
Color [PT-CO units]daily maximum≤ 30 col unit (pc)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]instantaneous minimum≥ 3.7 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 30 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, settleabledaily maximumreport only (mL/L)all year
Nitrogen, total [as N]daily maximum≤ 1700 ug/Lall year
Phosphorus, total [as P]daily maximum≤ 160 ug/Lall year
Phosphorus, total [as P]daily maximum≤ 12700 ug/Lall year
Cyanide, total [as CN]daily maximum≤ 4 ug/Lall year
Cyanide, total [as CN]daily maximumreport only (ug/L)all year
Sulfate, total [as SO4]daily maximum≤ 250 mg/Lall year
Arsenic, total [as As]daily maximum≤ 10 ug/Lall year
Arsenic, total [as As]daily maximumreport only (ug/L)all year
Copper, total [as Cu]daily maximum≤ 1300 ug/Lall year
Copper, total [as Cu]daily maximum≤ 12 ug/Lall year
Lead, total [as Pb]daily maximumreport only (ug/L)all year
Lead, total [as Pb]daily maximum≤ 4.4 ug/Lall year
Flow, in conduit or thru treatment plantdaily maximum≤ .104 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 11 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
Enterococci90th percentile≤ 130 #/100mLall year
Solids, total dissolveddaily maximum≤ 500 mg/Lall year

How strict are these limits?

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

Same industry: the 108 Water Supply permits in Puerto Rico.

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Your permit document is the final word. As JSON: /api/v1/permits/PR0022624 · MCP: https://passage-data.com/mcp