Kenai Peninsula Borough, AK
Transparent derived index from EPA TRI / SDWIS / Superfund extracts: not an official EPA rating. Fixed caps: facilities ≤25 pts (50+ = max), log10 releases ≤25 pts, Superfund ≤25 pts (5/site), health-violation systems ≤15 pts (3/system), high-chemical facilities ≤10 pts. Bands: High ≥60, Moderate ≥30. See methodology.
Environmental data for Kenai Peninsula Borough in Alaska · Population: 59,843
TRI sites such as Tesoro Alaska - Kenai Refinery; Crowley Kenai Facility; Halliburton Sterling Facility; SDWIS systems such as HOMER WATER SYSTEM; KENAI WATER SYSTEM; SOLDOTNA anchor Kenai Peninsula Borough, AK's EPA extract. Derived burden score 37/100 (Moderate Risk) uses fixed national caps on density, log release volume, Superfund count, and health-flagged systems - not an official EPA rating.
Health-flagged SDWIS rows in Kenai Peninsula Borough include SEWARD; ANCHOR POINT SAFE WATER CORPORATION; SEWARD MARINE INDUSTRIAL CENT, while Tesoro Alaska - Kenai Refinery leads reported TRI pounds among local Form R filers. AQS median AQI 8 / peak 42 in 2024.
Burden score 37/100 (Moderate Risk) is the only weighted composite on this page. The tables below list every TRI facility, SDWIS system, and Superfund site EPA has on record for Kenai Peninsula Borough -- not just the names called out above -- reproducing the disclosure history as filed, not a current-safety verdict. Extract current as of 2026-08-25.
Release-over-release change
What changed for Kenai Peninsula Borough, AK: EPA TRI 2023 reporting year
Same facilities, both years
-6.6%
3 facilities that filed in 2022 and 2023
Whole inventory
-6.6%
48.9 thousand lb → 45.6 thousand lb, every facility that filed
- Kenai Peninsula Borough, AK's total reported releases fell from 48.9 thousand lb in 2022 to 45.6 thousand lb in 2023, based on EPA TRI filings.
- Kenai Peninsula Borough, AK's water releases rose from 847 lb in 2022 to 2.0 thousand lb in 2023, based on EPA TRI filings.
- Kenai Peninsula Borough, AK's off-site transfers rose from 1.4 thousand lb in 2022 to 2.1 thousand lb in 2023, based on EPA TRI filings.
- Kenai Peninsula Borough, AK's land releases rose from 79 lb in 2022 to 108 lb in 2023, based on EPA TRI filings.
Air Quality History (2020–2024)
EPA Air Quality Index (AQI) data showing how many days per year fall into each air quality category.
| Year | Good | Moderate | Unhealthy (SG) | Max AQI |
|---|---|---|---|---|
| 2024 | 122 (100%) | 0 | 0 | 42 |
| 2023 | 119 (100%) | 0 | 0 | 29 |
| 2022 | 119 (99%) | 1 | 0 | 73 |
| 2021 | 121 (100%) | 0 | 0 | 41 |
| 2020 | 120 (98%) | 2 | 0 | 53 |
Source: EPA Air Quality System (AQS) Annual AQI by County AQI categories: Good (0-50), Moderate (51-100), Unhealthy for Sensitive Groups (101-150), Unhealthy (151-200), Very Unhealthy (201-300), Hazardous (301+)
For real-time air quality readings and pollutant breakdowns in Alaska, see the EPA's AirNow.gov.
Water Systems (25)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| HOMER WATER SYSTEM | 7,008 | 0 |
| KENAI WATER SYSTEM | 5,700 | 0 |
| SOLDOTNA | 4,807 | 0 |
| SEWARD | 3,324 | 1 |
| ANCHOR POINT SAFE WATER CORPORATION | 1,000 | 3 |
| SEWARD MARINE INDUSTRIAL CENT | 545 | 1 |
| SELDOVIA WATER SYSTEM | 418 | 9 |
| VOZNESENKA VILLAGE | 300 | 8 |
| NANWALEK | 281 | 19 |
| TYONEK WATER SYSTEM | 206 | 0 |
| PORT GRAHAM | 180 | 10 |
| KB SUB. WATER SERVICE ASSOC. | 170 | 81 |
| NIKISKI VILLAGE TC | 150 | 1 |
| KACHEMAK SELO #3 | 150 | 22 |
| WILLOWBROOK NORTH | 150 | 1 |
| SALMON CREEK TRAILER COURT | 125 | 4 |
| HIGHLAND PRIDE MOBILE HOME PARK | 100 | 4 |
| QUICKDRAW H2O | 100 | 0 |
| HOMERUN OIL CO. WATER HAULER | 100 | 0 |
| COLLEGE PARK HOME OWNERS ASSOC | 85 | 6 |
| ASHTON PARK | 75 | 10 |
| BEACHSIDE ESTATES | 60 | 3 |
| BAY VIEW TRAILER COURT | 51 | 4 |
| STERLING MOOSE RIVER MANOR | 33 | 4 |
| GREATLAND VILLAGE PARK | 30 | 2 |
TRI Facilities (3)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Tesoro Alaska - Kenai Refinery | 245.8K lbs |
| 2 | Crowley Kenai Facility | 2.5K lbs |
| 3 | Halliburton Sterling Facility | 0 lbs |
Cities in Kenai Peninsula Borough (12)
Frequently Asked Questions
What is the environmental risk level in Kenai Peninsula Borough, Alaska? ▼
Are there Superfund sites in Kenai Peninsula Borough? ▼
How many toxic release facilities are in Kenai Peninsula Borough? ▼
What is the air quality in Kenai Peninsula Borough? ▼
Is the drinking water safe in Kenai Peninsula Borough? ▼
What environmental agencies cover Kenai Peninsula Borough? ▼
What does this county environmental profile show?
This county environmental profile rolls up EPA Toxics Release Inventory facility reports, Safe Drinking Water Information System public-water-system filings, and Superfund National Priorities List sites for the county boundary defined by the U.S. Census Bureau. Facility counts reflect facilities with a reporting address inside the county, not where downstream environmental effects may be observed. Population figures are from the most recent Census ACS 5-year estimate. The county detail page is updated whenever the upstream EPA programs publish revised data; see the methodology page for the documented ingest cadence and the editorial choices governing how aggregations are computed.
Read our methodology - how this data is sourced, computed, and verified.