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Electric Services, major discharger, Lihue, Hawaii. NPDES permit HI0000353, in force until Nov 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Temperature, water deg. centigrade | monthly average | ≤ 40 deg C | all year |
| Temperature, water deg. centigrade | daily maximum | ≤ 43.3 deg C | all year |
| Temperature, water deg. fahrenheit | monthly average | ≤ 104 deg F | all year |
| Temperature, water deg. fahrenheit | daily maximum | ≤ 110 deg F | all year |
| pH | minimum | ≥ 7 SU | all year |
| pH | maximum | ≤ 8.6 SU | all year |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year |
| Arsenic, total recoverable | daily maximum | report only (ug/L) | all year |
| Selenium, total recoverable | daily maximum | report only (ug/L) | all year |
| Thallium, total recoverable | daily maximum | report only (ug/L) | all year |
| Beryllium, total recoverable [as Be] | daily maximum | report only (ug/L) | all year |
| Chromium, hexavalent [as Cr] | daily maximum | report only (ug/L) | all year |
| Nickel, total recoverable | monthly average | ≤ 4646 ug/L | all year |
| Nickel, total recoverable | daily maximum | ≤ 76 ug/L | all year |
| Nickel, total recoverable | daily maximum | report only (ug/L) | all year |
| Nickel, total recoverable | monthly average | ≤ 628 lb/d | all year |
| Nickel, total recoverable | daily maximum | ≤ 10 lb/d | all year |
| Silver total recoverable | daily maximum | report only (ug/L) | all year |
| Zinc, total recoverable | daily maximum | report only (ug/L) | all year |
| Aluminum, total recoverable | daily maximum | report only (ug/L) | all year |
| Cadmium, total recoverable | daily maximum | report only (ug/L) | all year |
| Lead, total recoverable | daily maximum | report only (ug/L) | all year |
| Copper, total recoverable | daily maximum | ≤ 3.5 ug/L | all year |
| Copper, total recoverable | daily maximum | report only (ug/L) | all year |
| Copper, total recoverable | daily maximum | ≤ .47 lb/d | all year |
| Antimony, total recoverable | daily maximum | report only (ug/L) | all year |
| 2-Methyl-4,6-dinitrophenol | daily maximum | report only (ug/L) | all year |
| Dichlorobromomethane | daily maximum | report only (ug/L) | all year |
| Carbon tetrachloride | daily maximum | report only (ug/L) | all year |
| 1,2-Dichloroethane | daily maximum | report only (ug/L) | all year |
| Bromoform | daily maximum | report only (ug/L) | all year |
| Chloroform | daily maximum | report only (ug/L) | all year |
| Toluene | daily maximum | report only (ug/L) | all year |
| Benzene | daily maximum | report only (ug/L) | all year |
| Acenaphthene | daily maximum | report only (ug/L) | all year |
| Acrolein | daily maximum | report only (ug/L) | all year |
| Acrylonitrile | daily maximum | report only (ug/L) | all year |
| Anthracene | daily maximum | report only (ug/L) | all year |
| Benzo[b]fluoranthene | daily maximum | report only (ug/L) | all year |
| Benzo[k]fluoranthene | daily maximum | report only (ug/L) | all year |
| Benzo[a]pyrene | daily maximum | report only (ug/L) | all year |
| Bis[2-chloroethyl] ether | daily maximum | report only (ug/L) | all year |
| Bis[2-chloro-1-methylethyl] ether | daily maximum | report only (ug/L) | all year |
| Butyl benzyl phthalate | daily maximum | report only (ug/L) | all year |
| Chlorobenzene | daily maximum | report only (ug/L) | all year |
| Chlorodibromomethane | daily maximum | report only (ug/L) | all year |
| Chrysene | daily maximum | report only (ug/L) | all year |
| Diethyl phthalate | daily maximum | report only (ug/L) | all year |
| Dimethyl phthalate | daily maximum | report only (ug/L) | all year |
| 1,2-Diphenylhydrazine | daily maximum | report only (ug/L) | all year |
| Endosulfan sulfate | daily maximum | report only (ug/L) | all year |
| .beta.-Endosulfan | daily maximum | report only (ug/L) | all year |
| .alpha.-Endosulfan | daily maximum | report only (ug/L) | all year |
| Endrin aldehyde | daily maximum | report only (ug/L) | all year |
| Ethylbenzene | daily maximum | report only (ug/L) | all year |
| Fluoranthene | daily maximum | report only (ug/L) | all year |
| Fluorene | daily maximum | report only (ug/L) | all year |
| Hexachlorocyclopentadiene | daily maximum | report only (ug/L) | all year |
| Hexachlorobutadiene | daily maximum | report only (ug/L) | all year |
| Hexachloroethane | daily maximum | report only (ug/L) | all year |
| Indeno[1,2,3-cd]pyrene | daily maximum | report only (ug/L) | all year |
| Isophorone | daily maximum | report only (ug/L) | all year |
| Methyl bromide [Bromomethane] | daily maximum | report only (ug/L) | all year |
| Methylene chloride | daily maximum | report only (ug/L) | all year |
| N-Nitrosodi-N-propylamine | daily maximum | report only (ug/L) | all year |
| N-Nitrosodiphenylamine | daily maximum | report only (ug/L) | all year |
| N-Nitrosodimethylamine [NDMA] | daily maximum | report only (ug/L) | all year |
| Nitrobenzene | daily maximum | report only (ug/L) | all year |
| Pyrene | daily maximum | report only (ug/L) | all year |
| Tetrachloroethylene | daily maximum | report only (ug/L) | all year |
| 1,1-Dichloroethylene | daily maximum | report only (ug/L) | all year |
| 1,1,1-Trichloroethane | daily maximum | report only (ug/L) | all year |
| 1,1,2-Trichloroethane | daily maximum | report only (ug/L) | all year |
| 1,1,2,2-Tetrachloroethane | daily maximum | report only (ug/L) | all year |
| Benzo[a]anthracene | daily maximum | report only (ug/L) | all year |
| 1,2-Dichlorobenzene | daily maximum | report only (ug/L) | all year |
| 1,2-Dichloropropane | daily maximum | report only (ug/L) | all year |
| trans-1,2-Dichloroethylene | daily maximum | report only (ug/L) | all year |
| 1,2,4-Trichlorobenzene | daily maximum | report only (ug/L) | all year |
| Dibenz[a,h]anthracene | daily maximum | report only (ug/L) | all year |
| 1,3-Dichlorobenzene | daily maximum | report only (ug/L) | all year |
| 1,4-Dichlorobenzene | daily maximum | report only (ug/L) | all year |
| 2-Chloronaphthalene | daily maximum | report only (ug/L) | all year |
| 2-Chlorophenol | daily maximum | report only (ug/L) | all year |
| 2,4-Dichlorophenol | daily maximum | report only (ug/L) | all year |
| 2,4-Dimethylphenol | daily maximum | report only (ug/L) | all year |
| 2,4-Dinitrotoluene | daily maximum | report only (ug/L) | all year |
| 2,4-Dinitrophenol | daily maximum | report only (ug/L) | all year |
| 2,4,6-Trichlorophenol | daily maximum | report only (ug/L) | all year |
| 3,3'-Dichlorobenzidine | daily maximum | report only (ug/L) | all year |
| 2,3,7,8-Tetrachlorodibenzo-p-dioxin | daily maximum | report only (ug/L) | all year |
| Phenol | daily maximum | report only (ug/L) | all year |
| Naphthalene | daily maximum | report only (ug/L) | all year |
| Chlorpyrifos | daily maximum | report only (ug/L) | all year |
| Pentachlorophenol | daily maximum | report only (ug/L) | all year |
| 2,4,5-TP[silvex] acids/salts, whole water sample | daily maximum | report only (ug/L) | all year |
| Di[2-ethylhexyl] phthalate [DEHP] | daily maximum | report only (ug/L) | all year |
| Di-n-butyl phthalate | daily maximum | report only (ug/L) | all year |
| Benzidine | daily maximum | report only (ug/L) | all year |
| Vinyl chloride | daily maximum | report only (ug/L) | all year |
| Trichloroethylene | daily maximum | report only (ug/L) | all year |
| 4,4'-DDT | daily maximum | report only (ug/L) | all year |
| 4,4'-DDD | daily maximum | report only (ug/L) | all year |
| 4,4'-DDE | daily maximum | report only (ug/L) | all year |
| Aldrin | daily maximum | report only (ug/L) | all year |
| .alpha.-BHC | daily maximum | report only (ug/L) | all year |
| .beta.-BHC | daily maximum | report only (ug/L) | all year |
| .gamma.-BHC | daily maximum | report only (ug/L) | all year |
| Chlordane [tech mix. and metabolites] | daily maximum | report only (ug/L) | all year |
| Dieldrin | daily maximum | report only (ug/L) | all year |
| Endrin | daily maximum | report only (ug/L) | all year |
| Toxaphene | daily maximum | report only (ug/L) | all year |
| Heptachlor | daily maximum | report only (ug/L) | all year |
| Heptachlor epoxide | daily maximum | report only (ug/L) | all year |
| Methoxychlor | daily maximum | report only (ug/L) | all year |
| Malathion | daily maximum | report only (ug/L) | all year |
| Parathion | daily maximum | report only (ug/L) | all year |
| Demeton | daily maximum | report only (ug/L) | all year |
| Guthion | daily maximum | report only (ug/L) | all year |
| Hexachlorobenzene | daily maximum | report only (ug/L) | all year |
| 2,4-Dichlorophenoxyacetic acid | daily maximum | report only (ug/L) | all year |
| Mirex | daily maximum | report only (ug/L) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 16.2 MGD | all year |
| Chlorine, total residual | daily maximum | report only (ug/L) | all year |
| 2,3,5,6-Tetrachlorophenol | daily maximum | report only (ug/L) | all year |
| 2,4,5-Trichlorophenol | daily maximum | report only (ug/L) | all year |
| 4-Chloro-3-methylphenol | daily maximum | report only (ug/L) | all year |
| Mercury, total recoverable | daily maximum | report only (ug/L) | all year |
| 1,3-Dichloropropene | daily maximum | report only (ug/L) | all year |
| 1,2,4,5-Tetrachlorobenzene | daily maximum | report only (ug/L) | all year |
| Pentachlorobenzene | daily maximum | report only (ug/L) | all year |
| N-Nitrosodiethylamine | daily maximum | report only (ug/L) | all year |
| N-Nitrosopyrrolidine | daily maximum | report only (ug/L) | all year |
| N-Nitrosodibutylamine | daily maximum | report only (ug/L) | all year |
| Pentachloroethane | daily maximum | report only (ug/L) | all year |
| Pass/Fail Static Renewal 7 Day Chronic Menidia beryllina | daily maximum | report only (pass=0;fail=1) | all year |
Cited limits by parameter: Hawaii's rules and the federal ones.
Same industry: the 4 Electric Services permits in Hawaii.
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