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Counties → Maine

Hancock County, Maine

SDWIS compliance plate

Sheet ME009 · Hancock County 201 sys · 21,298 viol · #998/3254

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

  • VIOL-SEVERE 95.5% flagged
  • HEALTH-LOW 13.5% health
  • RANK-UPPER #998/3254
  • PHOTO-FINISH ±0.4 pp
  • PFAS-HIGH 66.7% detect
  • SRC-GW GW lead 95%
  • SYS-LARGE 201 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Aroostook County ( -0.4 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Hancock County ranks #998 of 3,254 counties by people served, and #6 of 16 counties in Maine. See methodology · corpus placement.

Hancock County standing, mid-flagged corpus third

Flagged-system rate 95.5% is in the corpus middle third (≤ 100.0% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 13.5% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 66.7% is UCMR5 detect rate above the tested-pool upper third (> 33.3%) . Population served ranks #998 of 3,254 · #6 of 16 in Maine.

Flagged-rate neighbourhood around Hancock County

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

0% 20% 40% 60% 80% 100% Androscoggin · lowest Waldo · near Aroostook · near Sagadahoc · highest 87.2% 94.4% 94.8% 95.1% 95.2% 95.5% 100%

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

Water Systems

System Name Population Violations PFAS
Town of Bar Harbor- Water Division 4,443 5 Detected
Ellsworth Water Department 3,910 102 Clean
Southwest Harbor Water & Sewer District 2,480 536 -
Maine Water Company Bucksport Division 1,700 17 -
Mount Desert Water Dist North 1,623 76 -
Castine Water Department 983 48 -
US Nps Jordan Pond Hse (18) 888 13 -
Mount Desert Water Dist -Seal 865 24 -
Asticou Inn 760 6 -
Winter Harbor Water District 700 52 -
Stonington Water Company 683 158 -
Aos 91 Mt Desert Island High School 615 64 -
Timberland Acres Campground 565 149 -
Narrows Too Campground 525 6 -
Hadleys Point Campground 505 86 -
US Nps Sieur de Monts (2) 500 8 -
US Nps Cadillac Mtn (8) 500 14 -
Mt Desert Narrows Campground 499 4 -
Blaze Blue Hill 450 96 -
Franklin Water Department 443 104 Detected
Patten Pond Camping Resort 430 21 -
Lucerne Inn 422 19 -
Northern Light Blue Hill 409 119 -
Bar Harbor KOA Oceanside-West Side 401 63 -
Big Cats Catering-Tiny Tykes Daycare 383 100 -
Mount Desert Campground 375 45 -
Camp Beech Cliff 350 86 -
Msu 93 Blue Hill Consolidated School 319 96 -
Bunkers Seafood and Spirits 319 359 -
Blue Hill Public Library 318 21 -
Balsam Cove Campground 314 56 -
Lawrence Family Fitness Center 309 48 -
George Stevens Academy 308 145 -
Long Pond Water District 308 188 -
Bass Harbor Campground 305 18 -
Cold Spring Water Company 305 48 -
Abels Lobster Pound 301 50 -
Hancock Pour House 300 4 -
Arborvine Restaurant & Brewery 296 0 -
Terramor Outdoor Resort 292 45 -
Smugglers Den 289 27 -
Causeway Club Inc 270 8 -
The Pickled Wrinkle 267 46 -
Rsu 24 Mountain View School 264 30 -
US Nps Schoodic Woods Campground 264 0 -
Marlintinis Grill Inc 252 4 -
US Nps Echo Lake (12) 250 72 -
Islesford Dock Restaurant 240 263 -
Msu 76 Deer Isle/Stonington K-8 School 240 68 -
Camp Jordan 235 103 -

Compare beyond Maine

Mid-flagged peers for Hancock County

Cross-state counties nearest Hancock County on flagged-system share (95.5%) and cumulative violation count (21,298). 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.