PlainWater
Counties → Maine

Knox County, Maine

Water Systems
47
Population Served
30,692
Total Violations
3,529
906 health-based
PFAS Detected
0
of 2 tested

Violation Analysis

91.5%
Systems with Violations
75.1
Avg Violations per System
25.7%
Health-Based Violations

Water Source Types

GW
43 systems (91%)
SW
4 systems (9%)

PFAS Contamination

2
Systems Tested
0
PFAS Detected
0.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Knox Maine water systems by violation status, EPA SDWIS records.

No violations on record (4) One or more violations (43)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Maine Water Company Camden & Rockland 21,315 25 Clean
Mdoc State Park-Camden Hills 1,573 42 -
Vinalhaven Water District 1,053 212 Clean
Maine Water Company Warren Division 815 4 -
North Haven Water Department 740 734 -
Tenants Harbor Water District 378 90 -
Port Clyde Water District 330 79 -
Camp Med-O-Lark 300 115 -
Sennebec Lake Campground 1-Lodge 243 114 -
Mic Mac Cove Campground Inc 240 107 -
Maine Water Company Union Division 238 0 -
Alford Lake Camp #2 220 76 -
Hope Elementary School 207 8 -
Knox County Fish & Game Club 203 175 -
Camden Snow Bowl 200 24 -
Craignair Inn 192 49 -
Sandy Shores Owners Assn 188 15 -
Rsu 40 Union Elementary-Middle School 180 80 -
Camp Bishopswood 170 16 -
Msu 69 Appleton Village School 168 39 -
Rsu 40 Prescott Memorial School 130 32 -
Mountainside Mobile Home Park 130 113 -
Lobster Buoy Campsite 100 44 -
Oakland Park Bowling Center 100 312 -
Outward Bound -the Landing 100 12 -
Cushing Community School 99 29 -
The Pitch 95 18 -
Blueberry Cove Camp 89 188 -
Friendship Water Department 85 9 -
Hurricane Island Center for Science 77 40 -
Little Learners Childcare 77 2 -
Ashwood Waldorf School 72 64 -
Lie-Nielsen Toolworks 60 16 -
Elliott Apartments 55 135 -
Sennebec Lake Campground 2-Store 55 0 -
Crawford Commons 50 70 -
Center for Furniture Craftsmanship 47 18 -
Four Winds Homeowners Assn 43 5 -
Village at Rockport #4 43 6 -
Travelers Motel 35 84 -
High Tide Inn (Inn) 32 91 -
High Tide Inn (Deckhouse) 30 133 -
Village at Rockport #1 30 16 -
Village at Rockport #2 30 0 -
Dollar General-Union 25 0 -
US Nps Isle Au Haut Ranger Station 25 85 -
Village at Rockport #3 25 3 -

Other Counties in Maine

Cumberland County
224 systems · 217,874 served · 17,731 violations
York County
190 systems · 164,445 served · 12,163 violations
Penobscot County
168 systems · 92,443 served · 15,780 violations
Kennebec County
169 systems · 79,399 served · 9,772 violations
Androscoggin County
94 systems · 70,047 served · 4,940 violations
Hancock County
201 systems · 46,973 served · 21,298 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Knox County? ▼
Knox County has 3,529 total drinking water violations across 47 water systems, of which 906 are health-based violations. 91.5% of systems have at least one violation.
How many people get water from Knox County systems? ▼
Water systems in Knox County serve approximately 30,692 people through 47 public water systems.
Has PFAS been detected in Knox County water? ▼
Of 2 water systems tested for PFAS in Knox County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Knox County? ▼
Water systems in Knox County use GW (43 systems), SW (4 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 25.7% of Knox County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - 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 Editorial

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.