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PRASA Minillas WTP

Water Supply, Aguas Buenas, Puerto Rico. NPDES permit PR0026794, in force until Jun 30, 2028. Last 12 months: over a limit 4 times (last February 2026), 1 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (14 values), form Q quarterly (1 value), form Y yearly
Renewal application due
Jan 2, 2028 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
7 values over a limit, 2 required values missing, 0 of 17 reports late

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

Period endingParameterReportedLimitOver by
October 2025Copper, total [as Cu], daily maximum546.49 ug/L≤ 249 ug/L119%
October 2025Phosphorus, total [as P], daily maximum6370 ug/L≤ 6270 ug/L2%
November 2025Copper, total [as Cu], daily maximum378.85 ug/L≤ 249 ug/L52%
February 2026Copper, total [as Cu], daily maximum730.91 ug/L≤ 249 ug/L194%

Limits in force (24)

ParameterStatisticLimitMonths
Temperature, water deg. centigradedaily maximum≤ 30 deg Call year
Turbiditydaily maximum≤ 50 NTUall year
Turbiditydaily maximum≤ 575 NTUall year
Color [PT-CO units]quarterly maximum≤ 15 col unit (pc)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 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≤ 6270 ug/Lall year
Copper, total [as Cu]daily maximum≤ 7.7 ug/Lall year
Copper, total [as Cu]daily maximum≤ 249 ug/Lall year
Lead, total [as Pb]daily maximum≤ 2.4 ug/Lall year
Lead, total [as Pb]daily maximum≤ 18.6 ug/Lall year
Zinc, total [as Zn]daily maximum≤ 99.34 ug/Lall year
Flow, in conduit or thru treatment plantdaily maximum≤ .15 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
Ammonia & ammonium- totaldaily maximumreport only (mg/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/PR0026794 · MCP: https://passage-data.com/mcp