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PRASA Santa Isabel WTP

Water Supply, Utuado, Puerto Rico. NPDES permit PR0026182, in force until Sep 30, 2030. Last 12 months: over a limit 4 times (last March 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (12 values), form Q quarterly (4 values), form Y yearly (2 values), form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 17 reports late

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

Period endingParameterReportedLimitOver by
October 2025Lead, total [as Pb], daily maximum8.33 ug/L≤ 1.39 ug/L499%
January 2026BOD, 5-day, 20 deg. C, daily maximum101 mg/L≤ 20 mg/L405%
January 2026Lead, total [as Pb], daily maximum4.94 ug/L≤ 1.39 ug/L255%
March 2026Solids, total dissolved, daily maximum1200 mg/L≤ 500 mg/L140%

Limits in force (29)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 32.2 deg Call year
Turbiditydaily maximum≤ 50 NTUall year
Turbiditydaily maximum≤ 1243 NTUall year
Color [PT-CO units]daily maximum≤ 15 col unit (pc)all year
Color [PT-CO units]daily maximum≤ 113 col unit (pc)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 20 mg/Lall year
pHminimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, settleabledaily maximumreport only (mL/L)all year
Phosphorus, total [as P]daily maximum≤ 160 ug/Lall year
Phosphorus, total [as P]daily maximum≤ 3.42111343 mg/Lall year
Cyanide, total [as CN]daily maximum≤ 4 ug/Lall year
Cadmium, total [as Cd]daily maximum≤ .47 ug/Lall year
Cadmium, total [as Cd]daily maximum≤ 6 ug/Lall year
Copper, total [as Cu]daily maximum≤ 5.3 ug/Lall year
Copper, total [as Cu]daily maximum≤ 817.98473 ug/Lall year
Lead, total [as Pb]daily maximum≤ 1.39 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 69.03 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 283.21 ug/Lall year
Flow, in conduit or thru treatment plantdaily maximum≤ .226 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
Solids, total dissolveddaily maximum≤ 500 mg/Lall year
Mercury, total [as Hg]daily maximum≤ .05 ug/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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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/PR0026182 · MCP: https://passage-data.com/mcp