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Counties → Alaska

Matanuska-Susitna Borough, Alaska

SDWIS compliance plate

Sheet AK170 · Matanuska-Susitna Borough 345 sys · 20,535 viol · #619/3254

VIOL-SEVERE · HEALTH-LOW · RANK-TOP · PHOTO-FINISH · PFAS-HIGH · SRC-GW · SYS-LARGE · BOOK-FULL

  • VIOL-SEVERE 97.4% flagged
  • HEALTH-LOW 4.5% health
  • RANK-TOP #619/3254
  • PHOTO-FINISH ±0.4 pp
  • PFAS-HIGH 50.0% detect
  • SRC-GW GW lead 100%
  • SYS-LARGE 345 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Kenai Peninsula Borough ( -0.4 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Matanuska-Susitna Borough ranks #619 of 3,254 counties by people served, and #3 of 26 counties in Alaska. See methodology · corpus placement.

Matanuska-Susitna Borough standing, mid-flagged corpus third

Flagged-system rate 97.4% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 4.5% is health-based share at or below the lower third (≤ 10.3%) . UCMR5 detect rate 50.0% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #619 of 3,254 · #3 of 26 in Alaska.

Flagged-rate neighbourhood around Matanuska-Susitna Borough

Lowest/highest poles plus in-state counties nearest Matanuska-Susitna Borough on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% North Slope Bo · lowest Matanuska-Susi · this county Yakutat City a · highest 92.3% 96.4% 97% 97.4% 98.1% 98.4% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Wasilla Water System 18,492 224 Detected
Palmer Water System 8,111 206 Clean
Unified Alaskan Utilities Settlers Bay 2,733 267 -
Msbsd Colony Schools 1,961 103 -
Talkeetna Water System 1,850 161 -
Valley Utilities LLC 1,590 6 -
Speedway Seward Meridian 1,315 10 -
Country Field Water Co. 1,166 91 -
Speedway Kgb 1,162 34 -
Mt McKinley Princess Lodge 1,156 258 -
Fairview Market Place 1,113 43 -
Speedway Parks/Pitman 1,111 22 -
Matsu Water Bottling 1,025 147 -
Equestrian Acres 950 104 -
Victoria Estates 912 192 -
Msbsd Knik-Goose Bay Elem. 897 34 -
Talkeetna Alaskan Lodge 884 11 -
Msbsd Teeland Middle School 748 24 -
Wasilla Christian Church 658 18 -
Church on the Rock Wasilla Campus 617 34 -
Three Bears Store 60 - 4 Corners 590 83 -
Msbsd Career Center 575 195 -
Msbsd Redington JR/SR High School 550 15 -
East Big Lake Mall 546 79 -
Msbsd Meadow Lakes Elementary 515 49 -
Wasilla Circle K Store - 7751 W Parks Hw 513 5 -
Msbsd Ron Larson School 505 31 -
Trapper Creek Watering Point 500 7 -
Unified Alaskan Utilities Midtown Est 495 125 -
Three Bears Store 80 - Pittman 484 44 -
Msbsd Mat-Su Central School 480 0 -
Msbsd Cottonwood Creek Elem 475 179 -
Msbsd Pioneer Peak 475 135 -
Meadow Brook Subdivision 465 151 -
Msbsd Finger Lake Elementary 445 121 -
Msbsd Tanaina Elementary 439 51 -
Pioneer Meadows Subdivision 435 87 -
Msbsd Snowshoe Elementary 427 125 -
Three Bears Store Big Lake 420 0 -
Gorilla Fireworks. LLC 420 1 -
Townsite Foodmart 406 19 -
Turners Corner 406 17 -
Msbsd Dena'ina Elementary School 400 12 -
Msbsd Butte Elementary 400 43 -
Three Bears Store 85 - Kgb 388 69 -
Msbsd Houston High School 381 61 -
Msbsd Houston Middle School 380 18 -
Valley Country Store #2 365 2 -
Msbsd Big Lake Elem #2 New 365 47 -
Valley Country Store #1 365 22 -

Compare beyond Alaska

Mid-flagged peers for Matanuska-Susitna Borough

Cross-state counties nearest Matanuska-Susitna Borough on flagged-system share (97.4%) and cumulative violation count (20,535). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers

Read our methodology · Check your water system - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.