PlainWater
Counties → Oregon

Tillamook County, Oregon

Water Systems
63
Population Served
33,756
Total Violations
4,704
525 health-based
PFAS Detected
0
of 1 tested

Violation Analysis

100.0%
Systems with Violations
74.7
Avg Violations per System
11.2%
Health-Based Violations

Water Source Types

GW
30 systems (48%)
SW
20 systems (32%)

PFAS Contamination

1
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

Tillamook 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
Tillamook Water Dept, City Of 5,265 98 Clean
Manzanita Water Department 3,200 168 -
Oprd Cape Lookout State Park 2,005 61 -
Fairview Water District 1,920 93 -
Netarts Water District 1,800 58 -
Neskowin Reg Water Dist 1,735 94 -
Oprd Oswald West State Park 1,708 148 -
Nehalem, City Of 1,700 132 -
Bay City Water System 1,400 94 -
Rockaway Beach, City Of 1,400 160 -
Pacific City Joint Water - San Auth 1,000 36 -
Long Prairie Water District 998 28 -
Pleasant Valley Water Co 900 29 -
Garibaldi Water System 837 58 -
Beaver Water District 600 116 -
Neahkahnie Water District 600 147 -
Kilchis Water District 500 42 -
Oceanside Water District 500 206 -
Watseco-Barview Water District 450 90 -
South Prairie Water Assn 440 27 -
Wheeler, City Of 400 198 -
Nestucca Valley Elementary School 325 144 -
Cloverdale Water District 310 50 -
West Hills Water Company 299 24 -
Nestucca High School 270 120 -
Hebo Joint Water & Sanitary Auth 250 95 -
Port of Tillamook Bay 250 23 -
South Fork Forest Camp 200 265 -
Ultimook Running Camp 200 3 -
Oceanside WD - Cape Meares 170 63 -
Juno Nonprofit Water Improvement Distr 170 42 -
Tillamook Forest Center 164 9 -
Latimer Road Water Association 150 31 -
Camp Meriwether Bsa 120 39 -
Twin Rocks Friends Camp 115 40 -
Odf Nehalem Falls Cg 100 15 -
Bear Creek Artichokes 100 3 -
Bay Aire Mobile Home Park 82 86 -
Tierra del Mar Water Co 80 193 -
Rt 53 Water Inc 80 203 -
Trask River RV Park 80 196 -
Misty River RV Park 76 41 -
Tone Water District 75 41 -
Winema Christian Camp 70 18 -
Northwood Water District Inc 60 52 -
Hunt Water District 60 50 -
Odf Jones Creek Cg Hp #2 60 13 -
The Falls at Camper Cove 50 10 -
Two Capes Campground 50 1 -
Odf Browns Camp Forest Park 41 28 -

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 Tillamook County? ▼
Tillamook County has 4,704 total drinking water violations across 63 water systems, of which 525 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from Tillamook County systems? ▼
Water systems in Tillamook County serve approximately 33,756 people through 63 public water systems.
Has PFAS been detected in Tillamook County water? ▼
Of 1 water systems tested for PFAS in Tillamook County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Tillamook County? ▼
Water systems in Tillamook County use GW (30 systems), SW (20 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. 11.2% of Tillamook 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.