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States / Alaska

Matanuska-Susitna Borough, AK

The federal environmental record for Matanuska-Susitna Borough (population 115,239): what is on file, where it is, and what remains open. Sources and retrieval dates are on the methodology page.

0

Superfund NPL sites

6

federal cleanup sites

1

PFAS-detecting water systems

1

TRI facilities

15

open tank releases

Drinking water: PFAS testing

Public water systems serving Matanuska-Susitna with at least one PFAS detection under UCMR5. The federal limit for PFOA and PFOS is 4 ng/L; EPA proposed in May 2026 to rescind the limits for the other compounds, which are shown for information.

SystemHighest resultsReading
WASILLA WATER SYSTEM

AK2224646

PFHxS: 4.2 ng/L

detected

On a system with detections? Testing and treatment options

Facilities reporting toxic releases (2024)

1 facilities in Matanuska-Susitna filed TRI reports for 2024, totalling 956 lb released.

FacilityCityTop chemicalsTotal released
CROWLEY PALMER FACILITYPALMERToluene, n-Hexane956 lb

Underground fuel tanks

EPA's UST Finder records 202 tank facilities in Matanuska-Susitna: 107 tanks in service and 431 closed. 164 fuel releases are on record, of which 15 remain open. Open releases are cleanups that have not reached "no further action".

Radon

EPA maps Matanuska-Susitna as Zone 2, moderate predicted indoor radon (2 to 4 pCi/L average). Radon and air quality are covered in depth on lung.com.

The record for one specific address

County figures blur what matters: distance. The Address Environmental Report runs these same federal datasets against one address and reports every site, tank, polluter and water result around it, with distances, in about a minute.

Get the report - $39

All federal cleanup sites on file

The wider Superfund enterprise inventory (SEMS) for Matanuska-Susitna, including sites assessed but never listed. Presence here records that EPA had reason to look, not a finding of danger.

  • BIG LAKE NAV AIDSBIG LAKE
  • FAA PUNTILLA LAKEDENALI NATIONAL PARK
  • FAA SUMMIT AIR NAVIGATION SITETALKEETNA
  • USAF LRRS BEAR CREEKTANANA
  • USDOT FAA SKWENTNASKWENTNA
  • USDOT FAA TALKEETNA AIRPORTTALKEETNA