Non-Compliance
TRI Reporter
Clean Air Act
Clean Water Act
RCRA
HAWAII ELECTRIC CO WAIAU POWER PLANT
Quick Summary
- •Released 236,737 lbs of toxic chemicals to the environment in the most recent TRI reporting year.
- •Currently out of compliance in at least one environmental program (CAA, CWA, or RCRA).
- •Assessed $235,400 in total penalties since records began.
- •Reports releases of chemicals classified as known or probable carcinogens.
- Address
-
475 KAMEHAMEHA HWY
PEARL CITY, HI 96782
View on map ↗ - County
- HONOLULU County
- Industry
- Utilities
- NAICS (North American Industry Classification)
- 221112
- Inspections
- 8 · last Aug 14, 2025
- Total Penalties
- $235,400 · last Jul 28, 2022
- Registry ID
- 110000486420
How This Compares
#4
of 36 TRI reporters in HI
#201
of 584 TRI reporters in Utilities
Ranked by most recent year's total TRI releases.
Compliance Status (Last 12 Quarters)
Number of calendar quarters, out of the last 12, in which this facility was in violation of its permit. Zero means no recorded violations in that program over the past three years.
0
Air (CAA)
Qtrs Non-Compliant
Qtrs Non-Compliant
11
Water (CWA)
Qtrs Non-Compliant
Qtrs Non-Compliant
0
Hazardous Waste (RCRA)
Qtrs Non-Compliant
Qtrs Non-Compliant
TRI Toxic Chemical Releases
Annual pounds of each toxic chemical released to air, water, and land, as reported to the EPA Toxic Release Inventory. Carcinogen (♦) and PFAS designations are per EPA and IARC classifications.
Emissions Trend (2015–2024)
-20% overall
| Year | Total Releases (lbs) | vs Prior Year |
|---|---|---|
| 2015 | 291,010 | — |
| 2016 | 235,384 | -19% |
| 2017 | 236,737 | +1% |
| 2018 | 209,141 | -12% |
| 2019 | 60,000 | -71% |
| 2020 | 184,689 | +208% |
| 2021 | 223,512 | +21% |
| 2022 | 236,743 | +6% |
| 2023 | 328,169 | +39% |
| 2024 | 232,162 | -29% |
2024
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 170,000 | 170,000 | — | — | — | |
| Ammonia | 62,000 | 62,000 | — | — | — | |
| Lead compounds | 82 | 80 | 2 | — | 327 | |
| Polycyclic aromatic compounds | 41 | 41 | — | — | 5 | ♦ Carcinogen |
| Naphthalene | 38 | 38 | — | — | 4 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 1 | 1 | — | — | — |
2023
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 250,000 | 250,000 | — | — | — | |
| Ammonia | 78,000 | 78,000 | — | — | — | |
| Lead compounds | 100 | 98 | 2 | — | 427 | |
| Polycyclic aromatic compounds | 35 | 35 | — | — | 5 | ♦ Carcinogen |
| Naphthalene | 33 | 33 | — | — | 2 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 1 | 1 | — | — | — | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2022
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 180,000 | 180,000 | — | — | — | |
| Ammonia | 56,600 | 56,600 | — | — | — | |
| Lead compounds | 75 | 73 | 2 | — | 299 | |
| Polycyclic aromatic compounds | 35 | 35 | — | — | 0 | ♦ Carcinogen |
| Naphthalene | 32 | 32 | — | — | 25 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 1 | 1 | — | — | — |
2021
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 170,000 | 170,000 | — | — | — | |
| Ammonia | 53,400 | 53,400 | — | — | — | |
| Lead compounds | 69 | 67 | 2 | — | 1 | |
| Polycyclic aromatic compounds | 22 | 22 | — | — | 273 | ♦ Carcinogen |
| Naphthalene | 21 | 21 | — | — | 21 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | — | 3 |
2020
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 140,000 | 140,000 | — | — | — | |
| Ammonia | 44,600 | 44,600 | — | — | — | |
| Lead compounds | 58 | 55 | 2 | — | 247 | |
| Polycyclic aromatic compounds | 16 | 16 | — | — | 10 | ♦ Carcinogen |
| Naphthalene | 15 | 15 | — | — | 9 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | — | 0 |
2019
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Ammonia | 60,000 | 60,000 | — | — | — | |
| Benzo[g,h,i]perylene | 0 | 0 | — | — | — | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
2018
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 150,000 | 150,000 | — | — | — | |
| Ammonia | 59,000 | 59,000 | — | — | — | |
| Lead compounds | 85 | 82 | 3 | — | 330 | |
| Naphthalene | 32 | 32 | — | — | 10 | ♦ Carcinogen |
| Polycyclic aromatic compounds | 24 | 24 | — | — | 14 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | — | 0 |
2017
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 180,000 | 180,000 | — | — | — | |
| Ammonia | 56,600 | 56,600 | — | — | — | |
| Lead compounds | 76 | 72 | 4 | — | 312 | |
| Polycyclic aromatic compounds | 31 | 31 | — | — | 96 | ♦ Carcinogen |
| Naphthalene | 29 | 29 | — | — | 3 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 1 | 1 | — | — | 1 |
2016
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 180,000 | 180,000 | — | — | — | |
| Ammonia | 55,280 | 55,280 | — | — | — | |
| Lead compounds | 71 | 68 | 4 | — | 320 | |
| Polycyclic aromatic compounds | 17 | 17 | — | — | 19 | ♦ Carcinogen |
| Naphthalene | 16 | 16 | — | — | 11 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | — | 0 |
2015
| Chemical | Total (lbs) | Air | Water | Land | Off-Site | |
|---|---|---|---|---|---|---|
| Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | 220,000 | 220,000 | — | — | — | |
| Ammonia | 70,480 | 70,480 | — | — | — | |
| Lead compounds | 491 | 86 | 5 | 400 | 583 | |
| Polycyclic aromatic compounds | 20 | 20 | — | — | 12 | ♦ Carcinogen |
| Naphthalene | 19 | 19 | — | — | 8 | ♦ Carcinogen |
| Benzo[g,h,i]perylene | 0 | 0 | — | — | 0 | |
| Dioxin and dioxin-like compounds | 0 | 0 | — | — | — | ♦ Carcinogen |
Waste Management & Recycling
How this facility manages toxic chemicals beyond direct releases — through recycling, energy recovery, and on-site or off-site treatment. Data from the most recent TRI reporting year. Quantities in pounds.
| Chemical | Released | Recycled | Energy Recovery | Treated |
|---|---|---|---|---|
| Naphthalene | — | — | 4 | — |
| Polycyclic aromatic compounds | — | — | 5 | — |
Off-Site Transfer Destinations
Facilities to which toxic chemicals were transferred for disposal, recycling, energy recovery, or treatment during the most recent TRI reporting year. Quantities in pounds.
| Destination | Chemical | Disposal | Recycling | Energy Rec. | Treatment |
|---|---|---|---|---|---|
|
UNITEK SOLVENT SERVICES
KAPOLEI, HI
|
Polycyclic aromatic compounds | — | — | 1 | — |
|
21ST CENTURY ENVIRONMENTAL
FERNLEY, NV
|
Polycyclic aromatic compounds | — | — | 4 | — |
|
WAIMANALO GULCH SANITARY LANDFILL
KAPOLEI, HI
|
Lead compounds | 327 | — | — | — |
|
CLEAN HARBORS ARAGONITE LLC
ARAGONITE, UT
|
Naphthalene | — | — | 2 | — |
|
UNITEK SOLVENT SERVICES
KAPOLEI, HI
|
Naphthalene | — | — | 2 | — |
Compliance Violations
Individual permit violations recorded by the EPA across air, water, and hazardous waste programs. Open violations are unresolved as of the most recent ECHO data update.
| Program | Type | Violation Date | Return to Compliance | Status |
|---|---|---|---|---|
| caa | FRV | Jul 28, 2022 | — | Open |
| caa | FRV | Jul 28, 2022 | — | Open |
| cwa | Management Practice Violations - Failure to Maintain Records | Nov 17, 2021 | — | Open |
| cwa | Management Practice Violations - Best Management Practice Deficiencies | Nov 17, 2021 | — | Open |
| cwa | Monitoring Violations - Failure to Monitor for Non-Toxicity Requirements | Nov 17, 2021 | — | Open |
| cwa | Effluent Violations - Unauthorized Discharge | Jan 25, 2021 | — | Open |
| caa | FRV | Oct 22, 2018 | — | Open |
| caa | FRV | Sep 12, 2016 | — | Open |
| rcra | Standards for Used Oil: Generators | Jun 3, 2009 | Nov 23, 2010 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Jun 3, 2009 | Nov 23, 2010 | Resolved |
| rcra | Standards Applicable to Generators of HW: Pre-Transport Requirements Applicable to Small and Large Quantity Generators | Jun 3, 2009 | Nov 23, 2010 | Resolved |
| rcra | Interim Status Standards for Owners and Operators of HW TSDs: Use and Management of Containers | Jun 3, 2009 | Nov 23, 2010 | Resolved |
| rcra | EPA Administered Permit Programs: the HW Permit Program General Information | Jun 3, 2009 | Nov 23, 2010 | Resolved |
| rcra | Standards Applicable to Generators of HW: General | Aug 10, 1998 | Dec 13, 1999 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: General | Jun 27, 1989 | Jan 1, 1990 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Financial Requirements | Mar 31, 1986 | May 8, 1986 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Closure and Post-Closure | May 21, 1985 | Mar 17, 1986 | Resolved |
| rcra | Standards for Owners and Operators of HW TSDs: Closure and Post-Closure | Oct 18, 1984 | Mar 17, 1986 | Resolved |
Discharge Limit Exceedances
Instances where this facility's reported discharge monitoring results exceeded its permitted limits under the Clean Water Act. Exceedance percentage shows how far over the permit limit the discharge was.
| Pollutant | Violation | Reported | Limit | Exceedance | Period | Status |
|---|---|---|---|---|---|---|
| Oxidants, total residual | DMR, Limited - Numeric Violation | 0.05 mg/L | 0.01 | +246% | Jun 2025 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.13 mg/L | 0.06 | +113% | Dec 2024 | Open |
| Temperature, water deg. centigrade | DMR, Limited - Numeric Violation | 40.30 deg C | 38.90 | +4% | Nov 2024 | Open |
| Temperature, water deg. centigrade | DMR, Limited - Numeric Violation | 39.30 deg C | 38.90 | +1% | Oct 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 0.09 mg/L | 0.06 | +51% | Aug 2023 | Open |
| Nitrogen, ammonia total [as N] | DMR, Limited - Numeric Violation | 67.46 kg/d | 50.94 | +32% | Aug 2023 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.21 mg/L | 0.00 | +20,400% | Feb 2023 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.00 | +3,660% | Feb 2023 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 7.40 kg/d | 0.50 | +1,382% | Feb 2023 | Open |
| Cyanide, total [as CN] | DMR, Limited - Numeric Violation | 98.52 kg/d | 0.59 | +16,592% | Feb 2023 | Open |
| Temperature, water deg. centigrade | DMR, Limited - Numeric Violation | 39.10 deg C | 38.90 | +1% | Jul 2022 | Open |
| Temperature, water deg. centigrade | DMR, Limited - Numeric Violation | 43.60 deg C | 38.90 | +12% | Jan 2020 | Open |
| Temperature, water deg. centigrade | DMR, Limited - Numeric Violation | 43.20 deg C | 38.90 | +11% | Dec 2019 | Open |
| Temperature, water deg. centigrade | DMR, Limited - Numeric Violation | 39.10 deg C | 38.90 | +1% | Aug 2019 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.08 mg/L | 0.00 | +2,169% | Jul 2019 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 11.44 kg/d | 1.77 | +546% | Jul 2019 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 3.45 kg/d | 2.13 | +62% | Feb 2019 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +354% | Feb 2019 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 13.67 kg/d | 2.86 | +378% | Feb 2019 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +366% | Feb 2019 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +434% | Feb 2019 | Resolved |
| Nitrite + Nitrate total [as N] | DMR, Limited - Numeric Violation | 80,000.00 mg/L | 20,000.00 | +300% | Dec 2018 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.04 mg/L | 0.00 | +1,200% | Dec 2018 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +437% | Dec 2018 | Open |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +357% | Nov 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 6.36 kg/d | 2.13 | +198% | Nov 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +394% | Nov 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 12.62 kg/d | 2.86 | +341% | Nov 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.02 mg/L | 0.00 | +331% | Nov 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 2.36 kg/d | 1.77 | +33% | Nov 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Oct 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 2.32 kg/d | 1.77 | +31% | Oct 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Oct 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Oct 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 7.31 kg/d | 2.86 | +156% | Oct 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 2.95 kg/d | 2.13 | +38% | Oct 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 3.59 kg/d | 2.13 | +68% | Sep 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Sep 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 7.31 kg/d | 2.86 | +156% | Sep 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 2.95 kg/d | 1.77 | +67% | Sep 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Sep 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Sep 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Aug 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +291% | Aug 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 0.01 mg/L | 0.00 | +186% | Aug 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 4.22 kg/d | 2.13 | +98% | Aug 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 3.40 kg/d | 1.77 | +92% | Aug 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 7.31 kg/d | 2.86 | +156% | Aug 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 7.40 kg/d | 2.86 | +159% | Jul 2018 | Resolved |
| Copper, total recoverable | DMR, Limited - Numeric Violation | 3.50 kg/d | 2.13 | +64% | Jul 2018 | Resolved |
Enforcement Actions
Formal enforcement cases brought by the EPA or state agencies, including administrative orders and civil penalties assessed. Penalty amounts reflect what was formally assessed, not necessarily what was collected.
Administrative - Formal
Clean Air Act
· Case 3604605524 · Jul 28, 2022
$235,400
Notice of Violation
Clean Air Act
· Case 3601871592 · Oct 22, 2018
Administrative - Formal
Clean Air Act
· Case 3604603978 · Oct 22, 2018
$8,160
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-HIT000610873-001 · May 10, 2010
$53,500
Administrative - Formal
· Case 09-2000-0394 · Dec 15, 2000
$100,000
Administrative - Formal
· Case 09-1999-0063 · Dec 14, 1999
$61,325
FINAL 3008(A) COMPLIANCE ORDER
RCRA (Hazardous Waste)
· Case RCRA-HIT000610873-006 · Dec 13, 1999
$61,325
INITIAL 3008(A) COMPLIANCE
RCRA (Hazardous Waste)
· Case RCRA-HIT000610873-005 · Sep 22, 1999
$82,940
INSPECTION REPORT WRITTEN
RCRA (Hazardous Waste)
· Case RCRA-HIT000610873-003 · May 21, 1999
WRITTEN INFORMAL
RCRA (Hazardous Waste)
· Case RCRA-HIT000610873-002 · Mar 31, 1986
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