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PRASA Gurabo

Water Supply, Gurabo, Puerto Rico. NPDES permit PR0026743 expired Apr 30, 2024; its limits still apply. Last 12 months: over a limit 3 times (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (15 values), form Q quarterly, form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
4 values over a limit, 0 required values missing, 0 of 17 reports late

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

Period endingParameterReportedLimitOver by
April 2026Phosphorus, total [as P], daily maximum4040 ug/L≤ 1000 ug/L304%
April 2026Turbidity, daily maximum850 NTU≤ 320 NTU—
July 2026Phosphorus, total [as P], daily maximum1150 ug/L≤ 1000 ug/L15%

Limits in force (27)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 32.2 deg Call year
Turbiditydaily maximum≤ 50 NTUall year
Turbiditydaily maximum≤ 320 NTUall year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, settleabledaily maximumreport only (mL/L)all year
Phosphorus, total [as P]daily maximum≤ 1 mg/Lall year
Phosphorus, total [as P]daily maximum≤ 1000 ug/Lall year
Copper, total [as Cu]daily maximum≤ 8.9 ug/Lall year
Copper, total [as Cu]daily maximum≤ 4528.59 ug/Lall year
Lead, total [as Pb]daily maximum≤ 2.95 ug/Lall year
Lead, total [as Pb]daily maximum≤ 54.17 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 114 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 563.51 ug/Lall year
Flow, in conduit or thru treatment plantdaily maximum≤ .288 MGDall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ 11 ug/Lall year
Cyanide, free availabledaily maximum≤ 5.2 ug/Lall year
Sulfide-hydrogen sulfide [undissociated]daily maximum≤ 2 ug/Lall year
Sulfide-hydrogen sulfide [undissociated]daily maximumreport only (ug/L)all year
Enterococcigeometric mean≤ 35 #/100mLall year
Enterococcigeometric meanreport only (#/100mL)all year
Enterococci90th percentile≤ 130 #/100mLall year
Enterococci90th percentilereport only (#/100mL)all year
Solids, total dissolveddaily maximum≤ 500 mg/Lall year
Ammonia & ammonium- totaldaily maximumreport only (ug/L)all 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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PR0026743 · MCP: https://passage-data.com/mcp