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Maui Ocean Center, Inc.

Botanical And Zoological Gardens, Wailuku, Hawaii. NPDES permit HI0021504 expired Oct 31, 2025; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (17 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (17)

ParameterStatisticLimitMonths
Turbiditymonthly averagereport only (NTU)all year
Turbiditydaily maximum≤ 5 NTUall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cdaily maximum≤ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year
BOD, 5-day, 20 deg. Cdaily maximum≤ 117.6 lb/dall year
pHminimum≥ 7 SUall year
pHmaximum≤ 8.6 SUall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendeddaily maximum≤ 10 mg/Lall year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendeddaily maximum≤ 235.2 lb/dall year
Nitrogen, total [as N]maximumreport only (ug/L)all year
Phosphorus, total [as P]maximumreport only (ug/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Nitrogen, ammonia total [as NH4]maximumreport only (ug/L)all year

How strict are these limits?

Cited limits by parameter: Hawaii's rules and the federal ones.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/HI0021504 · MCP: https://passage-data.com/mcp