PlainWater
Counties → Washington

Walla Walla County, Washington

Water Systems
69
Population Served
75,527
Total Violations
8,476
1,089 health-based
PFAS Detected
1
of 3 tested

Violation Analysis

92.8%
Systems with Violations
122.8
Avg Violations per System
12.8%
Health-Based Violations

Water Source Types

GW
47 systems (68%)
SW
3 systems (4%)

PFAS Contamination

3
Systems Tested
1
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

Walla Walla Washington water systems by violation status, EPA SDWIS records.

No violations on record (3) One or more violations (47)

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
Walla Walla Water Division 42,959 141 Clean
College Place Water Dept 8,147 127 Clean
Snake River Housing Water System 3,036 50 Clean
Burbank Business Park 1,983 3 -
Waitsburg City of 1,817 20 -
Wallula Dodd Water System 1,757 108 -
Consolidated Irrigation Dist 14 1,555 27 -
Walla Walla University 1,273 34 -
Hood Park 977 4 -
Fishhook Park 846 44 -
Valle Lindo Homes 787 29 -
Veterans Affair Med Ctr Dept Of 785 189 -
Packaging Corporation of America 700 35 -
Great Basin Water Burbank 656 762 -
Green Tank Irr District 11 553 524 -
Burbank Irrigation District 4 527 27 -
Prescott Town Of 522 68 -
Columbia View Water System 500 269 -
Arlenes Addition 480 31 -
Charbonneau Park 411 76 -
Touchet School 303 354 -
Artesian Water District 8 302 30 -
Walla Walla Airport 280 36 -
Hydro Irrigation District No 9 252 8 -
Blalock Orchard Dist 10 250 58 -
Dixie Water Association 240 45 -
Rooks Park Water 201 1 -
Wallula Water District 200 53 -
Ice Harbor Dam 197 658 -
Blalock Orchards Dist 12 193 13 -
Sun Harbor SW 188 3 -
Sun Harbor Water District #3 187 406 -
Burbank Heights 177 31 -
Taggares Fruit Co 152 2,455 -
Klicker Water System 1 134 0 -
Whitman Mission National Historic 134 1 -
Sydney Heights Water Assn 130 48 -
Columbia12 Touchet Chevron 104 58 -
Flat Top Ranch-Fishhook H2A Housing 96 0 -
Borton - Burbank Heights Jubilee #1 96 0 -
Westbourne Acres 94 293 -
Summers Circle Water LLC 82 27 -
K2h Farms-Shop & Office 80 24 -
Walla Walla River Packing & Storage 75 57 -
Wine Valley Water System 71 1 -
Firstfruits Farms 68 38 -
Cottonwood Glen Water Assn 65 43 -
Precept Wine 63 8 -
Pro Pac Sales LLC 60 32 -
Bct Inc 58 34 -

Other Counties in Washington

King County
217 systems · 3,193,095 served · 20,636 violations
Pierce County
359 systems · 1,138,508 served · 14,826 violations
Snohomish County
170 systems · 947,238 served · 8,193 violations
Spokane County
164 systems · 621,798 served · 9,829 violations
Clark County
72 systems · 615,931 served · 9,864 violations
Thurston County
322 systems · 395,780 served · 24,330 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Walla Walla County? ▼
Walla Walla County has 8,476 total drinking water violations across 69 water systems, of which 1,089 are health-based violations. 92.8% of systems have at least one violation.
How many people get water from Walla Walla County systems? ▼
Water systems in Walla Walla County serve approximately 75,527 people through 69 public water systems.
Has PFAS been detected in Walla Walla County water? ▼
Of 3 water systems tested for PFAS in Walla Walla County, 1 had PFAS detected (33.3% detection rate).
What types of water sources supply Walla Walla County? ▼
Water systems in Walla Walla County use GW (47 systems), SW (3 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. 12.8% of Walla Walla 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.