County of Maui

NPDES permit HI0021848 · Minor NON-POTW · effective, expires 2030-09-30 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

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

59values over a limit
225required values missing, on 11 form(s)
11of 23 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as NH4] (14), Nitrogen, total [as N] (14), pH (10).

Reporting

Reports are due about 29 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (210)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeMO AVG report only all year
001TurbidityANNL AVG <= .2 NTU all year
001TurbidityMO AVG report only all year
001TurbidityDAILY MX <= .5 NTU all year
001BOD, 5-day, 20 deg. CMO AVG <= 30 mg/L all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001BOD, 5-day, 20 deg. CMO AVG <= 2251.8 lb/d all year
001BOD, 5-day, 20 deg. CWKLY AVG <= 3377.7 lb/d all year
001BOD, 5-day, 20 deg. CDAILY MX report only all year
001pHMINIMUM >= 7.6 SU all year
001pHMAXIMUM <= 8.6 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedWKLY AVG <= 45 mg/L all year
001Solids, total suspendedDAILY MX report only all year
001Solids, total suspendedMO AVG <= 2251.8 lb/d all year
001Solids, total suspendedWKLY AVG <= 3377.7 lb/d all year
001Solids, total suspendedDAILY MX report only all year
001Nitrogen, total [as N]ANNL AVG report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]DAILY MX report only all year
001Nitrogen, total [as N]MO AVG report only all year
001Nitrogen, total [as N]AGM <= 8.25 lb/d all year
001Nitrogen, total [as N]DAILY MX <= 13.51 lb/d all year
001Phosphorus, total [as P]ANNL AVG report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]DAILY MX report only all year
001Phosphorus, total [as P]MO AVG report only all year
001Phosphorus, total [as P]AGM <= 1.2 lb/d all year
001Phosphorus, total [as P]DAILY MX <= 2.25 lb/d all year
001Cyanide, total [as CN]DAILY MX <= 1 ug/L all year
001Arsenic, total recoverableANNL AVG <= .14 ug/L all year
001Arsenic, total recoverableDAILY MX <= 36 ug/L all year
001Selenium, total recoverableDAILY MX <= 71 ug/L all year
001Thallium, total recoverableMO AVG <= .47 ug/L all year
001Thallium, total recoverableDAILY MX <= 710 ug/L all year
001Beryllium, total recoverable [as Be]MO AVG <= .038 ug/L all year
001Chromium, hexavalent [as Cr]DAILY MX <= 50 ug/L all year
001Nickel, total recoverableDAILY MX <= 8.4 ug/L all year
001Silver total recoverableDAILY MX <= 2.7 ug/L all year
001Zinc, total recoverableDAILY MX <= 91 ug/L all year
001Cadmium, total recoverableDAILY MX <= 9.4 ug/L all year
001Lead, total recoverableDAILY MX <= 5.9 ug/L all year
001Copper, total recoverableDAILY MX <= 3.5 ug/L all year
001Antimony, total recoverableMO AVG <= 640 ug/L all year
0012,4,5-Trichlorophenoxypropionic acidMO AVG <= 400 ug/L all year
0012-Methyl-4,6-dinitrophenolMO AVG <= 30 ug/L all year
001TributyltinDAILY MX <= .01 ug/L all year
001DichlorobromomethaneANNL AVG <= 27 ug/L all year
001Carbon tetrachlorideANNL AVG <= 5 ug/L all year
001Carbon tetrachlorideDAILY MX <= 16000 ug/L all year
0011,2-DichloroethaneANNL AVG <= 650 ug/L all year
0011,2-DichloroethaneDAILY MX <= 38000 ug/L all year
001BromoformANNL AVG <= 120 ug/L all year
001ChloroformMO AVG <= 2000 ug/L all year
001TolueneMO AVG <= 520 ug/L all year
001TolueneDAILY MX <= 2100 ug/L all year
001BenzeneANNL AVG <= 16 ug/L all year
001BenzeneDAILY MX <= 1700 ug/L all year
001AcenaphtheneMO AVG <= 90 ug/L all year
001AcenaphtheneDAILY MX <= 320 ug/L all year
001AcroleinDAILY MX <= 18 ug/L all year
001AcrylonitrileANNL AVG <= 7 ug/L all year
001AnthraceneMO AVG <= 400 ug/L all year
001Benzo[b]fluorantheneANNL AVG <= .0013 ug/L all year
001Benzo[k]fluorantheneANNL AVG <= .013 ug/L all year
001Benzo[a]pyreneANNL AVG <= .00013 ug/L all year
001Bis[chloromethyl] etherANNL AVG <= .017 ug/L all year
001Bis[2-chloroethyl] etherANNL AVG <= 2.2 ug/L all year
001Bis[2-chloro-1-methylethyl] etherMO AVG <= 4000 ug/L all year
001Butyl benzyl phthalateANNL AVG <= .1 ug/L all year
001ChlorobenzeneMO AVG <= 800 ug/L all year
001ChlorodibromomethaneANNL AVG <= 21 ug/L all year
001ChryseneDAILY MX <= .13 ug/L all year
001Diethyl phthalateMO AVG <= 600 ug/L all year
001Dimethyl phthalateMO AVG <= 2000 ug/L all year
0011,2-DiphenylhydrazineANNL AVG <= .2 ug/L all year
001Endosulfan sulfateMO AVG <= 40 ug/L all year
001.beta.-EndosulfanMO AVG <= 40 ug/L all year
001.alpha.-EndosulfanMO AVG <= 30 ug/L all year
001Endrin aldehydeMO AVG <= 1 ug/L all year
001EthylbenzeneMO AVG <= 130 ug/L all year
001EthylbenzeneDAILY MX <= 140 ug/L all year
001FluorantheneDAILY MX <= 13 ug/L all year
001FluoreneMO AVG <= 70 ug/L all year
001HexachlorocyclopentadieneDAILY MX <= 2 ug/L all year
001HexachlorobutadieneANNL AVG <= .01 ug/L all year
001HexachlorobutadieneDAILY MX <= 11 ug/L all year
001HexachloroethaneANNL AVG <= .1 ug/L all year
001HexachloroethaneDAILY MX <= 310 ug/L all year
001Indeno[1,2,3-cd]pyreneANNL AVG <= .0013 ug/L all year
001IsophoroneANNL AVG <= 1800 ug/L all year
001IsophoroneDAILY MX <= 4300 ug/L all year
001Methyl bromide [Bromomethane]MO AVG <= 10000 ug/L all year
001Methylene chlorideANNL AVG <= 1000 ug/L all year
001N-Nitrosodi-N-propylamineANNL AVG <= .51 ug/L all year
001N-NitrosodiphenylamineANNL AVG <= 6 ug/L all year
001N-Nitrosodimethylamine [NDMA]ANNL AVG <= 3 ug/L all year
001NitrobenzeneMO AVG <= 600 ug/L all year
001NitrobenzeneDAILY MX <= 2200 ug/L all year
001PyreneMO AVG <= 30 ug/L all year
001TetrachloroethyleneANNL AVG <= 29 ug/L all year
001TetrachloroethyleneDAILY MX <= 145 ug/L all year
0011,1-DichloroethyleneMO AVG <= 20000 ug/L all year
0011,1,1-TrichloroethaneDAILY MX <= 10400 ug/L all year
0011,1,2-TrichloroethaneANNL AVG <= 8.9 mg/L all year
0011,1,2,2-TetrachloroethaneANNL AVG <= 3 ug/L all year
0011,1,2,2-TetrachloroethaneDAILY MX <= 3000 ug/L all year
001Benzo[a]anthraceneANNL AVG <= .0013 ug/L all year
0011,2-DichlorobenzeneMO AVG <= 3000 ug/L all year
0011,2-DichloropropaneANNL AVG <= 31 ug/L all year
001trans-1,2-DichloroethyleneMO AVG <= 4000 ug/L all year
0011,2,4-TrichlorobenzeneANNL AVG <= .076 ug/L all year
001Dibenz[a,h]anthraceneANNL AVG <= .00013 ug/L all year
0011,3-DichlorobenzeneMO AVG <= 10 ug/L all year
0011,4-DichlorobenzeneMO AVG <= 900 ug/L all year
0012-ChloronaphthaleneMO AVG <= 1000 ug/L all year
0012-ChlorophenolMO AVG <= 800 ug/L all year
0012,4-DichlorophenolMO AVG <= 60 ug/L all year
0012,4-DimethylphenolMO AVG <= 3000 ug/L all year
0012,4-DinitrotolueneANNL AVG <= 1.7 ug/L all year
0012,4-DinitrophenolMO AVG <= 300 ug/L all year
0012,4,6-TrichlorophenolANNL AVG <= 2.8 ug/L all year
0013,3'-DichlorobenzidineANNL AVG <= .15 ug/L all year
0012,3,7,8-Tetrachlorodibenzo-p-dioxinANNL AVG <= .0000051 ng/L all year
001PhenolDAILY MX <= 170 ug/L all year
001NaphthaleneDAILY MX <= 780 ug/L all year
001ChlorpyrifosDAILY MX <= .0056 ug/L all year
001PentachlorophenolANNL AVG <= .04 ug/L all year
001PentachlorophenolDAILY MX <= 13 ug/L all year
001Di[2-ethylhexyl] phthalate [DEHP]ANNL AVG <= .37 mg/L all year
001Di-n-butyl phthalateMO AVG <= 30 ug/L all year
001BenzidineANNL AVG <= .011 ug/L all year
001Vinyl chlorideANNL AVG <= 1.6 ug/L all year
001TrichloroethyleneANNL AVG <= 7 ug/L all year
001TrichloroethyleneDAILY MX <= 700 ug/L all year
001AldrinANNL AVG <= .00000077 ug/L all year
001AldrinDAILY MX <= 1.3 ug/L all year
001.alpha.-BHCANNL AVG <= .00039 ug/L all year
001.beta.-BHCANNL AVG <= .014 ug/L all year
001.gamma.-BHCDAILY MX <= .16 ug/L all year
001Chlordane [tech mix. and metabolites]ANNL AVG <= .00032 ug/L all year
001Chlordane [tech mix. and metabolites]DAILY MX <= .004 ug/L all year
001DDD in whole water sampleANNL AVG <= .00012 ug/L all year
001DDD in whole water sampleDAILY MX <= 1.2 ug/L all year
001DDEANNL AVG <= .000018 ug/L all year
001DDTANNL AVG <= .00003 ug/L all year
001DDTDAILY MX <= .001 ug/L all year
001DieldrinANNL AVG <= .0000012 ug/L all year
001DieldrinDAILY MX <= .0019 ug/L all year
001Endosulfan, totalDAILY MX <= .0087 ug/L all year
001EndrinDAILY MX <= .0023 ug/L all year
001ToxapheneDAILY MX <= .0002 ug/L all year
001HeptachlorANNL AVG <= .0000059 ug/L all year
001Heptachlor epoxideANNL AVG <= .000032 ug/L all year
001MethoxychlorMO AVG <= .02 ug/L all year
001MethoxychlorDAILY MX <= .03 ug/L all year
001MalathionDAILY MX <= .1 ug/L all year
001DemetonDAILY MX <= .1 ug/L all year
001GuthionDAILY MX <= .01 ug/L all year
001HexachlorobenzeneANNL AVG <= .000079 ug/L all year
0012,4-Dichlorophenoxyacetic acidMO AVG <= 12000 ug/L all year
001MirexDAILY MX <= .001 ug/L all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantWKLY AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX <= 9 MGD all year
001Chlorine, total residualDAILY MX <= 7.5 ug/L all year
0012,3,5,6-TetrachlorophenolDAILY MX <= 440 ug/L all year
0012,4,5-TrichlorophenolMO AVG <= 600 ug/L all year
001EnterococciMO GEOMN <= 35 CFU/100mL all year
001EnterococciDAILY MX <= 130 CFU/100mL all year
0014-Chloro-3-methylphenolMO AVG <= 2000 ug/L all year
001Nitrogen, ammonia total [as NH4]AGM <= 2 ug/L all year
001Nitrogen, ammonia total [as NH4]MO AVG report only all year
001Nitrogen, ammonia total [as NH4]DAILY MX <= 5 ug/L all year
001Mercury, total recoverableDAILY MX <= .029 ug/L all year
001Coliform, fecal generalMO GEOMN <= 5.2 CFU/100mL all year
001Coliform, fecal generalDAILY MX <= 200 CFU/100mL all year
0011,3-DichloropropeneANNL AVG <= 12 ug/L all year
0011,3-DichloropropeneDAILY MX <= 260 ug/L all year
0011,2,4,5-TetrachlorobenzeneMO AVG <= .03 ug/L all year
001PentachlorobenzeneMO AVG <= .1 ug/L all year
001N-NitrosodiethylamineANNL AVG <= 1.2 ug/L all year
001N-NitrosopyrrolidineANNL AVG <= 34 ug/L all year
001N-NitrosodibutylamineANNL AVG <= .22 ug/L all year
001MethylmercuryMO AVG <= .3 ug/L all year
001BOD, 5-day, percent removalMO AV MN >= 85 % all year
001Solids, suspended percent removalMO AV MN >= 85 % all year
001Benzene hexachlorideANNL AVG <= .01 ug/L all year
001PentachloroethaneDAILY MX < 130 ug/L all year
001Pass/Fail Static 4 Day Chronic Raphidocelis subcapitataDAILY MX < 1 pass=0;fail=1 all year
001Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiaDAILY MX < 1 pass=0;fail=1 all year
001Pass/Fail Static Renewal 7Day Chronic Pimephales promelasDAILY MX < 1 pass=0;fail=1 all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CWKLY AVG report only all year
INFBOD, 5-day, 20 deg. CDAILY MX report only all year
INFBOD, 5-day, 20 deg. CMO AVG report only all year
INFBOD, 5-day, 20 deg. CWKLY AVG report only all year
INFpHMINIMUM report only all year
INFpHMAXIMUM report only all year
INFSolids, total suspendedDAILY MX report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedWKLY AVG report only all year
INFSolids, total suspendedDAILY MX report only all year
INFSolids, total suspendedMO AVG report only all year
INFSolids, total suspendedWKLY AVG report only all year
INFFlow, in conduit or thru treatment plantDAILY MX report only all year
INFFlow, in conduit or thru treatment plantMO AVG report only all year
INFFlow, in conduit or thru treatment plantWKLY AVG report only 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