PlainWater
Counties → Oregon

Yamhill County, Oregon

Water Systems
91
Population Served
90,673
Total Violations
5,862
516 health-based
PFAS Detected
2
of 6 tested

Violation Analysis

91.2%
Systems with Violations
64.4
Avg Violations per System
8.8%
Health-Based Violations

Water Source Types

GW
36 systems (40%)
SW
14 systems (15%)

PFAS Contamination

6
Systems Tested
2
PFAS Detected
33.3%
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

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

No violations on record (4) One or more violations (46)

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
McMinnville Water & Light 34,515 53 Clean
Newberg, City Of 25,138 56 Clean
Sheridan, City Of 6,494 103 Clean
Lafayette, City Of 4,423 270 Clean
Dundee, City Of 2,960 305 Detected
Dayton, City Of 2,535 103 -
Carlton, City Of 2,270 148 -
Willamina, City Of 2,239 89 -
Amity, City Of 1,810 322 -
Yamhill, City Of 1,130 112 -
Golden Enterprises 700 52 -
Delphian School 350 25 -
Cove Orchard Water Association 300 25 -
Northwest Newberg Water Assn 250 43 -
Camp Yamhill 250 234 -
Ewing Young Elem SD 29J 245 181 -
Domaine Willamette Winery 200 57 -
Monrovia North 175 431 -
Monrovia South 175 16 -
Resonance Wines - Carlton 163 0 -
Bailey Nursery III 160 55 -
Adelsheim Vineyards 140 6 -
Sunny Acres Water District 130 46 -
Cswa Chehalem Springs 130 110 -
Domaine Serene 124 3 -
Pleasant View Water Co 120 46 Clean
Hidden Meadows Water Assn Inc 110 88 -
Sokol Blosser Vineyards 110 1 -
Hopewell Water Company 100 144 -
The Preserve 100 61 -
Chehalem Valley Baptist Church 100 27 -
Durant Vineyard Tasting Room 100 5 -
The Black Dog Vineyard 100 0 -
Grange Hill Winery 100 1 -
Valley View Water Co-Op 99 77 -
Rock of Ages Rest Home 97 133 -
East Yamhill Rural WD 90 29 -
Oxberg Water System #1 90 49 -
Stoller Family Estate 85 2 -
Hopewell Community Church 80 16 -
Soter Vineyards 80 0 -
Chehalem Valley Water Assn 75 30 -
Camp Tilikum 75 382 -
Boise Cascade-Willamina Veneer 75 35 -
NW Wine Company 75 3 -
Chehalem Mtn Sun Ridge Water Co 70 103 -
Robinson Nursery Amity WS 70 405 -
Laurel Ridge Winery 68 23 -
Fox Ridge Water Co 60 34 -
Solena Estate 60 0 -

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
Marion County
196 systems · 370,079 served · 19,281 violations
Lane County
237 systems · 327,688 served · 16,216 violations
Deschutes County
138 systems · 204,759 served · 5,986 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Yamhill County? ▼
Yamhill County has 5,862 total drinking water violations across 91 water systems, of which 516 are health-based violations. 91.2% of systems have at least one violation.
How many people get water from Yamhill County systems? ▼
Water systems in Yamhill County serve approximately 90,673 people through 91 public water systems.
Has PFAS been detected in Yamhill County water? ▼
Of 6 water systems tested for PFAS in Yamhill County, 2 had PFAS detected (33.3% detection rate).
What types of water sources supply Yamhill County? ▼
Water systems in Yamhill County use GW (36 systems), SW (14 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. 8.8% of Yamhill 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.