County of Maui

NPDES permit HI0021661 · Minor NON-POTW · administratively continued, expires 2026-07-31 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2026-07-31 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 33 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 28 days after each monitoring period ends (the most common figure among HI permits in EPA's filings — check your permit).

Limits in force (26)

OutfallParameterStatisticLimitMonths
001TurbidityMAXIMUM <= 5 NTU Jan, Feb, Mar, Apr, Nov, Dec
001TurbidityMAXIMUM <= 2 NTU May, Jun, Jul, Aug, Sep, Oct
001pHMINIMUM >= 5.5 SU all year
001pHMAXIMUM <= 8 SU all year
001Solids, total suspendedMAXIMUM <= 20 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMAXIMUM <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
001Flow, totalTOTAL report only all year
001DibromochloropropaneMAXIMUM report only all year
001Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasMAXIMUM <= 0 pass=0;fail=1 all year
002TurbidityMAXIMUM <= 5 NTU Jan, Feb, Mar, Apr, Nov, Dec
002TurbidityMAXIMUM <= 2 NTU May, Jun, Jul, Aug, Sep, Oct
002TurbidityMAXIMUM <= 5 NTU Jan, Feb, Mar, Apr, Nov, Dec
002TurbidityMAXIMUM <= 2 NTU May, Jun, Jul, Aug, Sep, Oct
002pHMINIMUM >= 5.5 SU all year
002pHMINIMUM >= 5.5 SU all year
002pHMAXIMUM <= 8 SU all year
002pHMAXIMUM <= 8 SU all year
002Solids, total suspendedMAXIMUM <= 20 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Solids, total suspendedMAXIMUM <= 20 mg/L Jan, Feb, Mar, Apr, Nov, Dec
002Solids, total suspendedMAXIMUM <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
002Solids, total suspendedMAXIMUM <= 10 mg/L May, Jun, Jul, Aug, Sep, Oct
002Chlorine, total residualMAXIMUM <= 19 ug/L all year
002Flow, totalMAXIMUM report only all year
002Flow, totalMAXIMUM report only all year
002DibromochloropropaneMAXIMUM report only all year
002Pass/Fail Static Renewal 96Hr Acute Pimephales PromelasMAXIMUM <= 0 pass=0;fail=1 all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states