PlainWater
Counties → Oregon

Marion County, Oregon

Water Systems
196
Population Served
370,079
Total Violations
19,281
1,530 health-based
PFAS Detected
3
of 11 tested

Violation Analysis

99.5%
Systems with Violations
98.4
Avg Violations per System
7.9%
Health-Based Violations

Water Source Types

GW
43 systems (22%)
SW
7 systems (4%)

PFAS Contamination

11
Systems Tested
3
PFAS Detected
27.3%
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

Marion Oregon water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (50)

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
Salem Public Works 199,820 24 Clean
Keizer, City Of 38,585 53 Detected
Woodburn, City Of 29,455 156 Clean
Suburban East Salem WD 13,900 19 Clean
Silverton, City Of 10,484 118 Clean
City of Stayton 8,400 46 Clean
Aumsville, City Of 4,125 61 Clean
Mount Angel, City Of 3,650 101 Clean
Hubbard, City Of 3,478 39 Clean
Jefferson, City Of 3,348 55 -
Sublimity, City Of 3,025 56 -
Ote Santiam River Ra-North 3,000 25 -
Ote Santiam River Ra-South 3,000 49 -
Turner, City Of 2,866 25 -
Oprd Detroit Lake Sp 2,600 61 -
Gervais Water Department 2,571 19 -
Bents Court Water Company 2,500 521 -
North Marion SD #15 2,100 93 -
Otic Maples Rest Area 2,000 52 -
Oprd Silver Falls State Park 1,800 58 -
Cascade Union JR/SR High SD 5 1,300 60 -
Aurora, City Of 1,133 51 -
Donald, City Of 1,107 65 Clean
Oprd Champoeg Overnight St Pk 885 29 -
OR Youth Authority - Maclaren 750 165 -
Hiland WC - Penticton/College Park 710 29 -
Forum Salem Campus 600 69 -
Hiland WC - Illahe Golf Club Estates 561 129 -
Marion County Parks North Santiam Park 525 33 -
Enchanted Forest 520 37 -
Pilot Travel Center #386 500 45 -
Century Meadows Inc 480 157 -
Labish Village Wtr Commission 452 238 -
Aurora Acres RV Resort 450 36 -
Brooks Csd 450 79 -
J Mar Racing/Woodburn Dragstrip 450 38 -
St Paul, City Of 434 61 -
Scotts Mills, City Of 421 293 -
Portland Travel Center 400 137 -
Columbia Helicopters 400 18 -
Willamette Valley Vineyards 378 146 -
Church on the Hill 375 328 -
Deer Creek Estates 350 46 -
Carolina Water System 300 198 -
Hiland WC - Lombard 300 129 -
Lakewood Homeowners 289 99 -
Carls Junior - Brooks 285 1 -
Silver Spur RV Park LLC 275 79 -
Starlite Mobile Village 250 173 -
Center Market #25 250 176 -

Other Counties in Oregon

Multnomah County
57 systems · 854,646 served · 4,422 violations
Washington County
96 systems · 597,244 served · 7,314 violations
Clackamas County
231 systems · 385,530 served · 18,114 violations
Lane County
237 systems · 327,688 served · 16,216 violations
Deschutes County
138 systems · 204,759 served · 5,986 violations
Jackson County
208 systems · 197,238 served · 12,362 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Marion County? ▼
Marion County has 19,281 total drinking water violations across 196 water systems, of which 1,530 are health-based violations. 99.5% of systems have at least one violation.
How many people get water from Marion County systems? ▼
Water systems in Marion County serve approximately 370,079 people through 196 public water systems.
Has PFAS been detected in Marion County water? ▼
Of 11 water systems tested for PFAS in Marion County, 3 had PFAS detected (27.3% detection rate).
What types of water sources supply Marion County? ▼
Water systems in Marion County use GW (43 systems), SW (7 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. 7.9% of Marion 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.