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Waiahi Water Company, LLC

Industrial or other facility, Lihue, Hawaii. NPDES permit HI0021894, in force until Apr 30, 2029. Last 12 months: no values over a limit, 1 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (12 values), form Y yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (16)

ParameterStatisticLimitMonths
Flow ratedaily maximumreport only (gal/d)all year
Turbiditydaily maximum≤ 5 NTUJan, Feb, Mar, Apr, Nov, Dec
Turbiditydaily maximum≤ 2 NTUMay–Oct
pHminimum≥ 5.5 SUall year
pHmaximum≤ 8 SUall year
Solids, total suspendeddaily maximum≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 10 mg/LMay–Oct
Solids, total suspendeddaily maximum≤ 50 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendeddaily maximum≤ 25 lb/dMay–Oct
Aluminum, dissolved [as Al]daily maximum≤ 260 ug/Lall year
Aluminum, dissolved [as Al]daily maximum≤ .65 lb/dall year
Chromium, total recoverabledaily maximum≤ 11 ug/Lall year
Chromium, total recoverabledaily maximum≤ .03 lb/dall year
Chlorine, total residualdaily maximum≤ 11 ug/Lall year
Chlorine, total residualdaily maximum≤ .03 lb/dall year
LC50 Static 48Hr Acute Pimephales promelasvalue≤ 0 pass=0;fail=1all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/HI0021894 · MCP: https://passage-data.com/mcp