Matanuska-susitna 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 Matanuska-susitna Borough in Alaska · Population: 110,677
TRI sites such as Crowley Palmer Facility; SDWIS systems such as WASILLA WATER SYSTEM; PALMER WATER SYSTEM; TALKEETNA WATER SYSTEM anchor Matanuska-susitna Borough, AK's EPA extract. Derived burden score 29/100 (Low 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 Matanuska-susitna Borough include WASILLA WATER SYSTEM; COUNTRY FIELD WATER CO.; EQUESTRIAN ACRES, while Crowley Palmer Facility leads reported TRI pounds among local Form R filers. AQS median AQI 15 / peak 95 in 2024.
Burden score 29/100 (Low 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 Matanuska-susitna 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 Matanuska-susitna Borough, AK: EPA TRI 2023 reporting year
Same facilities, both years
+32.2%
1 facilities that filed in 2022 and 2023
Whole inventory
+32.2%
720 lb → 952 lb, every facility that filed
- Matanuska-susitna Borough, AK's total reported releases rose from 720 lb in 2022 to 952 lb in 2023, based on EPA TRI filings.
- Matanuska-susitna Borough, AK's air releases rose from 720 lb in 2022 to 952 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 | 331 (92%) | 28 | 0 | 95 |
| 2023 | 317 (89%) | 40 | 1 | 102 |
| 2022 | 301 (88%) | 40 | 0 | 89 |
| 2021 | 307 (87%) | 44 | 2 | 163 |
| 2020 | 317 (88%) | 41 | 1 | 103 |
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 (45)
| System | System pop (SDWIS) | Violations |
|---|---|---|
| WASILLA WATER SYSTEM | 18,492 | 1 |
| PALMER WATER SYSTEM | 8,111 | 0 |
| TALKEETNA WATER SYSTEM | 1,850 | 0 |
| VALLEY UTILITIES LLC | 1,590 | 0 |
| COUNTRY FIELD WATER CO. | 1,166 | 2 |
| EQUESTRIAN ACRES | 950 | 5 |
| VICTORIA ESTATES | 912 | 1 |
| TRAPPER CREEK WATERING POINT | 500 | 0 |
| SAND LAKE SERVICES | 465 | 0 |
| MEADOW BROOK SUBDIVISION | 465 | 19 |
| PIONEER MEADOWS SUBDIVISION | 435 | 0 |
| SILVER CREEK SPRINGS SD | 239 | 3 |
| WESTWOOD WATER COMPANY INC | 180 | 1 |
| MATSU WATER BOTTLING VINE RD | 170 | 0 |
| NORTHERN LIGHTS TERRACE | 168 | 1 |
| MAJESTIC HILLS SUBDIVISION | 168 | 2 |
| BIRCH RUN ESTATES | 167 | 0 |
| VIEW POINTE AT THE RANCH | 155 | 0 |
| MOUNTAIN VIEW ESTATES | 150 | 4 |
| HILL TIMBER ESTATES | 120 | 0 |
| ELSINORE ESTATES SUBDIVISION | 120 | 1 |
| VICTORY BIBLE CAMP SPRING | 110 | 5 |
| WINTER ROSE MULTIFAMILY HOUSING | 100 | 0 |
| BLUFF VIEW ACRES WATER SYSTEM | 100 | 42 |
| QUIET CIRCLE APARTMENTS | 90 | 20 |
| ARKOSE WOODS | 90 | 0 |
| PALMER CORRECTIONAL CENTER | 90 | 0 |
| CAMERON ACRES | 80 | 9 |
| SETTLERS BAY CONDOS | 80 | 1 |
| GEMSTONE ESTATES | 75 | 0 |
| WASILLA LACY LAINE SD | 75 | 4 |
| NORTHWOOD APARTMENTS | 72 | 4 |
| EMERALD RIVER ESTATES | 62 | 0 |
| TIMBER RIDGE CONDOMINIUMS | 60 | 0 |
| ALPINE VIEW SUBDIVISION | 50 | 0 |
| FORTY NINER HOMEOWNERS ASSOC. | 39 | 0 |
| IRIS CIRCLE WATER CORPORATION | 37 | 0 |
| TWIN PEAKS | 37 | 3 |
| CAMWELL ON THE GREEN (MHP) | 33 | 2 |
| SNOWSHOE ACRES LLC | 32 | 2 |
| CENTRAL COMMERCIAL PARK | 32 | 1 |
| MOUNTAIN GLORY SUBDIVISION | 32 | 0 |
| JUNE LAKE AIRPARK SUBDIVISION | 26 | 0 |
| BERRY BLUFF COMMUNITY WATER SYSTEM | 25 | 0 |
| HERITAGE PARK | 8 | 0 |
TRI Facilities (1)
| # | Facility | Total Releases |
|---|---|---|
| 1 | Crowley Palmer Facility | 4.6K lbs |
Cities in Matanuska-susitna Borough (4)
Frequently Asked Questions
What is the environmental risk level in Matanuska-susitna Borough, Alaska? ▼
Are there Superfund sites in Matanuska-susitna Borough? ▼
How many toxic release facilities are in Matanuska-susitna Borough? ▼
What is the air quality in Matanuska-susitna Borough? ▼
Is the drinking water safe in Matanuska-susitna Borough? ▼
What environmental agencies cover Matanuska-susitna 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.