Water Quality in Oak Harbor, WA (98277)

EPA violation data for public water systems serving ZIP code 98277.

Active Health Violations

25 health-based violations found in the past 5 years, with at least one still unresolved. Contaminant levels have exceeded federal safety limits. Consider testing your tap water independently.

More violations than 98% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

40,917

Population

Water Systems

135

Violations (5yr)

Health-Based

Location

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Water Systems Serving This Area (85)

Oak Harbor City Of

All resolved

Purchased surface water 23,767 people served

2 violations (5yr) · All resolved

Lead tested: 1.2 ppb (limit: 15 ppb) ✓

Naval Air Station/Whidbey Island

Purchased surface water 16,595 people served

0 violations

Deception Pass Sp - Rosario Beach

Groundwater 999 people served

0 violations

Strawberry Hill Tracts

Groundwater 900 people served

0 violations

Rolling Hills-Glencairn

6 health-based

Groundwater 872 people served

16 violations (5yr) · 6 health-based · All resolved

Lead tested: 2.1 ppb (limit: 15 ppb) ✓

North Whidbey Water District

All resolved

Purchased surface water 568 people served

6 violations (5yr) · All resolved

Lead tested: 0.8 ppb (limit: 15 ppb) ✓

Penn Cove Water And Sewer District

13 health-based

Groundwater 460 people served

15 violations (5yr) · 13 health-based · All resolved

Dugualla Community Inc

All resolved

Groundwater 459 people served

2 violations (5yr) · All resolved

Family Bible Church

Groundwater 299 people served

0 violations

Bayview Estates Water Company

All resolved

Groundwater 227 people served

1 violation (5yr) · All resolved

Lead tested: 1.2 ppb (limit: 15 ppb) ✓

Blue Fox Drive In

All resolved

Groundwater 208 people served

10 violations (5yr) · All resolved

Auld Holland Inn

Purchased groundwater 203 people served

0 violations

Tennex Industries

Groundwater 200 people served

0 violations

Deception Pass Sp - Cornet Bay

Groundwater 199 people served

0 violations

Bible Baptist Church

Groundwater 195 people served

0 violations

Oak Hollow Water System

Groundwater 192 people served

0 violations

Sunrise Hills Community W S

Groundwater 186 people served

0 violations

Greenbank Village

All resolved

Groundwater 165 people served

3 violations (5yr) · All resolved

Town & Country Trailer

Groundwater 162 people served

0 violations

Bon Air Community Club Inc.

Groundwater 160 people served

0 violations

Family Bible Church

Groundwater 140 people served

0 violations

Highland Park Apts

Groundwater 138 people served

0 violations

Waterloo Acres Community Water Sys

All resolved

Groundwater 125 people served

1 violation (5yr) · All resolved

Harbor View Mobile Home Park

Groundwater 114 people served

0 violations

Sunset Beach

Groundwater 87 people served

0 violations

Deception Shores Water Association

Purchased surface water 83 people served

0 violations

Scenic Heights W A Inc

All resolved

Groundwater 78 people served

3 violations (5yr) · All resolved

Lead tested: 2 ppb (limit: 15 ppb) ✓

Bayview School

Groundwater 75 people served

0 violations

Whidbey Telephone Company

Groundwater 67 people served

0 violations

Highland Trace Water Co Inc

All resolved

Groundwater 62 people served

1 violation (5yr) · All resolved

Wishing Well Trailer Court

Groundwater 60 people served

0 violations

Harbor Airlines

Groundwater 56 people served

0 violations

Forest Hills Park Community

All resolved

Groundwater 54 people served

2 violations (5yr) · All resolved

M & M Mobile Park

Groundwater 51 people served

0 violations

Bonnie View Water

6 health-based

Groundwater 50 people served

66 violations (5yr) · 6 health-based · All resolved

Resolved

p-Dichlorobenzene Monitoring

Jul 2025 Resolved

Picloram Monitoring

Jul 2025 Resolved

Atrazine Monitoring

Jul 2025 Resolved

HEXACHLOROBENZENE Monitoring

Jul 2025 Resolved

BHC-GAMMA Monitoring

Jul 2025 Resolved

CHLOROBENZENE Monitoring

Jul 2025 Resolved

Ethylbenzene Monitoring

Jul 2025 Resolved

Toxaphene Monitoring

Jul 2025 Resolved

Benzo(a)pyrene Monitoring

Jul 2025 Resolved

Carbon tetrachloride Monitoring

Jul 2025 Resolved

cis-1,2-Dichloroethylene Monitoring

Jul 2025 Resolved

Pentachlorophenol Monitoring

Jul 2025 Resolved

Vinyl chloride Monitoring

Jul 2025 Resolved

2,4,5-TP Monitoring

Jul 2025 Resolved

Endrin Monitoring

Jul 2025 Resolved

1,1,1-Trichloroethane Monitoring

Jul 2025 Resolved

Styrene Monitoring

Jul 2025 Resolved

Tetrachloroethylene Monitoring

Jul 2025 Resolved

Heptachlor epoxide Monitoring

Jul 2025 Resolved

1,1-Dichloroethylene Monitoring

Jul 2025 Resolved

Hexachlorocyclopentadiene Monitoring

Jul 2025 Resolved

Chlordane Monitoring

Jul 2025 Resolved

Di(2-ethylhexyl) adipate Monitoring

Jul 2025 Resolved

LASSO Monitoring

Jul 2025 Resolved

1,1,2-Trichloroethane Monitoring

Jul 2025 Resolved

trans-1,2-Dichloroethylene Monitoring

Jul 2025 Resolved

1,2-Dichloropropane Monitoring

Jul 2025 Resolved

Dinoseb Monitoring

Jul 2025 Resolved

Di(2-ethylhexyl) phthalate Monitoring

Jul 2025 Resolved

o-Dichlorobenzene Monitoring

Jul 2025 Resolved

DICHLOROMETHANE Monitoring

Jul 2025 Resolved

Heptachlor Monitoring

Jul 2025 Resolved

Benzene Monitoring

Jul 2025 Resolved

1,2,4-Trichlorobenzene Monitoring

Jul 2025 Resolved

Trichloroethylene Monitoring

Jul 2025 Resolved

Toluene Monitoring

Jul 2025 Resolved

Simazine Monitoring

Jul 2025 Resolved

Methoxychlor Monitoring

Jul 2025 Resolved

1,2-Dichloroethane Monitoring

Jul 2025 Resolved

Dalapon Monitoring

Jul 2025 Resolved

Arsenic Health

Apr 2024 Resolved

Arsenic Health

Jan 2024 Resolved

Arsenic Health

Oct 2023 Resolved

Arsenic Health

Jul 2023 Resolved

Arsenic Health

Apr 2023 Resolved

Arsenic Health

Jan 2023 Resolved

Lighthouse Christian Center

Groundwater 50 people served

0 violations

Lyon Rd Community Association

All resolved

Groundwater 50 people served

1 violation (5yr) · All resolved

Suburban Hills Community Assoc

All resolved

Groundwater 46 people served

1 violation (5yr) · All resolved

Lead tested: 0 ppb (limit: 15 ppb) ✓

Krieg Water System

Groundwater 45 people served

0 violations

Patterson Water Supply

Groundwater 44 people served

0 violations

Westview Community Association

Groundwater 43 people served

0 violations

Sunset Beach

Groundwater 43 people served

0 violations

Flowers Water Company

Groundwater 42 people served

0 violations

Veterans Of Foreign Wars Post 7392

Groundwater 42 people served

0 violations

New Mansion (Rutherglen)

Groundwater 41 people served

0 violations

Evergreen Valley View Water System

All resolved

Groundwater 40 people served

1 violation (5yr) · All resolved

Lead tested: 1.2 ppb (limit: 15 ppb) ✓

San Juan Estates Water Association

All resolved

Groundwater 36 people served

1 violation (5yr) · All resolved

Sleeper Acres

Groundwater 35 people served

0 violations

Bayview Meadows Water System

Groundwater 34 people served

1 violation (5yr)

Evergreen Park

Groundwater 32 people served

0 violations

Even Down

Groundwater 31 people served

0 violations

Hartmann, Dick Water System

Groundwater 30 people served

0 violations

Crescent Harbor Rodeo Grounds

Groundwater 30 people served

0 violations

Crescent Harbor Water Co.

Groundwater 30 people served

0 violations

Tom Wilsey Water Assoc

Groundwater 30 people served

0 violations

Faranda Water Associaton

All resolved

Groundwater 28 people served

2 violations (5yr) · All resolved

Lead tested: 1 ppb (limit: 15 ppb) ✓

Gun Club Road Water System

Groundwater 28 people served

0 violations

Penn Cove Apartments

Groundwater 27 people served

0 violations

Evergreen Valley Acres

Groundwater 25 people served

0 violations

Forest Hills Park Community

Groundwater 25 people served

0 violations

Secluded Acres Community Assoc

Groundwater 25 people served

0 violations

Kennedy, Burl

Groundwater 25 people served

0 violations

Frostad Farms Water Assn

Groundwater 25 people served

0 violations

Flowers Boats

Groundwater 25 people served

0 violations

Hoffelts Town & Country M H P

Groundwater 25 people served

0 violations

West Beach Vista

Groundwater 25 people served

0 violations

Christian Science Church

Groundwater 25 people served

0 violations

Bonnie Doone Water

Groundwater 23 people served

0 violations

Mason Water System

Groundwater 18 people served

0 violations

Tall Pines Water

Groundwater 15 people served

0 violations

Westwood

Surface water 14 people served

0 violations

Bradshaw Addition Water System

Groundwater 14 people served

0 violations

Sandy Bubbles

Groundwater 14 people served

0 violations

Camano Ridge Water Association

Groundwater 9 people served

0 violations

Palmers Mutiny Bay Water Assn

Groundwater 9 people served

0 violations

Moran Beach Improvement Club

Groundwater 9 people served

0 violations

Blume/Ralph Water System

Groundwater 5 people served

0 violations

Lonetree Road Water System

Groundwater 4 people served

0 violations

Anderson West View Water System

Groundwater 4 people served

0 violations

Country School Kindergarten

Groundwater 4 people served

0 violations

Hilltop Of North Whidbey W.S.

Groundwater 4 people served

0 violations

Hastie Lake Water System

Groundwater 4 people served

0 violations

Trask Construction

Groundwater 3 people served

0 violations

Oak Harbor Storage Facility

Groundwater 3 people served

0 violations

Tallman Water System

Groundwater 3 people served

0 violations

Contaminants Found

TTHMHealth-Based

25 violations

All resolved

ArsenicHealth-Based

A naturally occurring element that can cause cancer and other health effects at high levels.

6 violations

All resolved

Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

18 violations

All resolved

NitrateMonitoring

At high levels, nitrate can cause blue baby syndrome in infants.

8 violations

All resolved

Consumer Confidence RuleMonitoring

Annual water quality report delivery requirement.

8 violations

All resolved

Total Haloacetic Acids (HAA5)Monitoring

6 violations

All resolved

p-DichlorobenzeneMonitoring

1 violation

All resolved

PicloramMonitoring

1 violation

All resolved

AtrazineMonitoring

1 violation

All resolved

HEXACHLOROBENZENEMonitoring

1 violation

All resolved

BHC-GAMMAMonitoring

1 violation

All resolved

CHLOROBENZENEMonitoring

1 violation

All resolved

EthylbenzeneMonitoring

1 violation

All resolved

ToxapheneMonitoring

1 violation

All resolved

Benzo(a)pyreneMonitoring

1 violation

All resolved

Carbon tetrachlorideMonitoring

1 violation

All resolved

cis-1,2-DichloroethyleneMonitoring

1 violation

All resolved

PentachlorophenolMonitoring

1 violation

All resolved

Vinyl chlorideMonitoring

1 violation

All resolved

2,4,5-TPMonitoring

1 violation

All resolved

EndrinMonitoring

1 violation

All resolved

1,1,1-TrichloroethaneMonitoring

1 violation

All resolved

StyreneMonitoring

1 violation

All resolved

TetrachloroethyleneMonitoring

1 violation

All resolved

Heptachlor epoxideMonitoring

1 violation

All resolved

1,1-DichloroethyleneMonitoring

1 violation

All resolved

HexachlorocyclopentadieneMonitoring

1 violation

All resolved

ChlordaneMonitoring

1 violation

All resolved

Di(2-ethylhexyl) adipateMonitoring

1 violation

All resolved

LASSOMonitoring

1 violation

All resolved

1,1,2-TrichloroethaneMonitoring

1 violation

All resolved

trans-1,2-DichloroethyleneMonitoring

1 violation

All resolved

1,2-DichloropropaneMonitoring

1 violation

All resolved

DinosebMonitoring

1 violation

All resolved

Di(2-ethylhexyl) phthalateMonitoring

1 violation

All resolved

o-DichlorobenzeneMonitoring

1 violation

All resolved

DICHLOROMETHANEMonitoring

1 violation

All resolved

HeptachlorMonitoring

1 violation

All resolved

BenzeneMonitoring

1 violation

All resolved

1,2,4-TrichlorobenzeneMonitoring

1 violation

All resolved

TrichloroethyleneMonitoring

1 violation

All resolved

TolueneMonitoring

1 violation

All resolved

SimazineMonitoring

1 violation

All resolved

MethoxychlorMonitoring

1 violation

All resolved

1,2-DichloroethaneMonitoring

1 violation

All resolved

DalaponMonitoring

1 violation

All resolved

Lead and Copper RuleMonitoring

Lead and copper testing requirement. Lead exposure can cause developmental harm in children.

1 violation

Has active

Lead & Copper Levels

Lead (Pb)

Within limit

0.8 ppb measured Action level: 15 ppb

Sampled: Jan 2023

How Does This Compare?

Oak Harbor (98277) has more violations than 98% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 135.

Fewer violations 98th percentile More violations

Recommended Water Filters

Based on health-based violations detected in your area, these filter types are commonly used to address similar contaminants. Consult your water utility's Consumer Confidence Report for the most current data.

Reverse Osmosis System

Highly effective at removing heavy metals, dissolved solids, and a wide range of contaminants. Recommended for homes with lead or arsenic concerns.

Targets:Lead, Copper, Arsenic, Mercury, Cadmium

Look for:NSF/ANSI 58 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Activated Carbon Filter

Excellent for removing chlorine, chloramine, and disinfection byproducts like THMs and HAAs. Available as pitcher filters, countertop, or under-sink units.

Targets:THMs, HAAs, Chlorine, Chloramine, Taste & Odor

Look for:NSF/ANSI 42 & 53 certified

NSF Certified Products → EPA Safe Drinking Water Guide →

Always look for filters certified by NSF International for the specific contaminants you want to remove. This is general educational information, not an endorsement of any specific product.