County · Washington
King County, Washington: drinking water records
Explore EPA records for 157 community water systems across 86 ZIP codes in King County, then find water-testing resources and available recent monitoring-station readings.
Data as of EPA UCMR 5 final release, August 2026 (file dated Aug 28, 2026) · EPA SDWIS 2026Q2 (file dated Jul 9, 2026). How we build these pages
Drinking-water records
EPA survey and compliance records are historical reports. UCMR 5 results are available for 41 of the 157 listed systems in this snapshot. A system with no reported PFAS detection is not a test of every tap or every contaminant.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems in this county
All 157 active community systems in the available county records, sorted by record completeness. Scroll the table to explore more systems.
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| King County Water District #54 WA5339950 | 5,373 | 120 | 0 | 1 | 1.2 ppbbelow the action level |
| Water District 19 WA5338900 | 5,335 | 360 | 0 | 2 | 3 ppbbelow the action level |
| Seattle Public Utilities WA5377050 | 1,161,961 | 240 | 0 | 0 | 1.6 ppbbelow the action level |
| Kent Water Department WA5338150 | 166,421 | 420 | 1 | 0 | 0 ppbbelow the action level |
| Redmond Water System City of WA5371650 | 163,335 | 300 | 2 | 0 | 2 ppbbelow the action level |
| Lakehaven Water and Sewer District WA5341997 | 148,809 | 1,020 | 6 | 0 | 3.3 ppbbelow the action level |
| Renton City of WA5371850 | 108,091 | 180 | 1 | 0 | 1.9 ppbbelow the action level |
| Auburn City of WA5303350 | 107,655 | 360 | 1 | 0 | 2.2 ppbbelow the action level |
| Highline Water District WA5340650 | 100,170 | 240 | 0 | 0 | 1.4 ppbbelow the action level |
| Northshore Utility District WA5340800 | 99,789 | 120 | 0 | 0 | 36 ppbat or above the action level |
| Sammamish Plateau Water & Sewer WA5340900 | 79,362 | 480 | 6 | 0 | 1.7 ppbbelow the action level |
| Covington Water District WA5341650 | 56,172 | 240 | 5 | 0 | 1.4 ppbbelow the action level |
| Issaquah Water System WA5336350 | 43,584 | 300 | 0 | 0 | 1 ppbbelow the action level |
| Cedar River Water & Sewer District WA5341800 | 28,671 | 180 | 1 | 0 | 0 ppbbelow the action level |
| Lake Meridian Water District WA5341900 | 24,231 | 360 | 0 | 0 | 0 ppbbelow the action level |
| Enumclaw Water Department WA5323600 | 23,276 | 240 | 0 | 0 | 1.5 ppbbelow the action level |
| Snoqualmie Water WA5381080 | 20,222 | 120 | 0 | 0 | 2.5 ppbbelow the action level |
| King County Water District No 90 WA5341150 | 20,100 | 180 | 0 | 0 | 1.2 ppbbelow the action level |
| Skyway Water & Sewer WA5338800 | 12,036 | 300 | 0 | 0 | 0 ppbbelow the action level |
| Ne Sammamish Sewer & Water District WA5375265 | 9,702 | 120 | 0 | 0 | 0 ppbbelow the action level |
| Union Hill Water Association INC WA5390260 | 8,720 | 60 | 0 | 0 | 5.8 ppbbelow the action level |
| North Bend City of WA5360100 | 8,710 | 120 | 0 | 0 | 0 ppbbelow the action level |
| Pacific City of WA5365300 | 7,925 | 60 | 1 | 0 | 0 ppbbelow the action level |
| Sallal Water Association INC WA5375560 | 6,600 | 240 | 0 | 0 | 0 ppbbelow the action level |
| Snoqualmie Pass Utility District WA5381048 | 5,832 | 60 | 0 | 0 | 5.6 ppbbelow the action level |
| Lake Forest Park Water District WA5340950 | 3,171 | 180 | 0 | 0 | 0 ppbbelow the action level |
| Heights Water WA5332300 | 2,051 | 60 | 0 | 0 | 2.3 ppbbelow the action level |
| King County Water District #123 WA5341996 | 242 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Crestview West Water System WA5316232 | 147 | 0 | 0 | 1 | 8.5 ppbbelow the action level |
| Cherry Creek WA5323101 | 138 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Issaquah Valley Water Assn #1 WA5336300 | 80 | 0 | 0 | 1 | 1.1 ppbbelow the action level |
| Stone Creek Estates Water Assn. WA5384530 | 62 | 0 | 0 | 1 | 4.4 ppbbelow the action level |
| Fall City Water Dist. (Plum Creek) WA5364294 | 59 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Needle Creek Water System WA5355376 | 50 | 0 | 0 | 1 | 0 ppbbelow the action level |
| Sunset Park Water Co WA5386140 | 21 | 0 | 0 | 5 | 2 ppbbelow the action level |
| Bellevue City of WA5305575 | 321,349 | 240 | 0 | 0 | not reported |
| Soos Creek Water & Sewer District WA5340100 | 74,172 | 120 | 0 | 0 | not reported |
| Kirkland City of WA5342250 | 69,243 | 120 | 0 | 0 | not reported |
| Woodinville Water District WA5341600 | 66,699 | 120 | 0 | 0 | not reported |
| King County Water District #20 WA5338950 | 48,469 | 120 | 0 | 0 | not reported |
| Tukwila Water Department WA5389500 | 36,298 | 120 | 0 | 0 | not reported |
| Bothell Water City of WA5307900 | 33,643 | 120 | 0 | 0 | not reported |
| North City Water District WA5339600 | 32,847 | 120 | 0 | 0 | not reported |
| Mercer Island City of WA5353640 | 31,057 | 120 | 0 | 0 | not reported |
| King County Water District #49 WA5339800 | 23,492 | 120 | 0 | 0 | not reported |
| King County Water District #125 WA5341998 | 21,904 | 120 | 0 | 0 | not reported |
| Coal Creek Utility District WA5341750 | 15,989 | 120 | 0 | 0 | not reported |
| Duvall City of WA5320750 | 11,050 | 120 | 0 | 0 | not reported |
| Black Diamond Water Dept WA5307220 | 6,407 | 0 | 0 | 0 | 1.5 ppbbelow the action level |
| King County Water District 119 WA5341985 | 3,800 | 120 | 0 | 0 | not reported |
| Algona Water Dept WA5301450 | 3,300 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Muckleshoot 105300013 | 3,250 | 0 | 0 | 0 | 1.9 ppbbelow the action level |
| Ames Lake Water Assoc INC WA5302055 | 3,224 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Fall City Water Dist. #127 WA5324550 | 2,987 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Carnation Water System City of WA5311200 | 2,400 | 0 | 0 | 0 | 1.9 ppbbelow the action level |
| Cherokee Bay Community Club INC WA5311626 | 2,400 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Mirrormont WA5355250 | 2,083 | 0 | 0 | 0 | 1.5 ppbbelow the action level |
| Wilderness Rim Association WA5396878 | 1,867 | 0 | 0 | 0 | 1.7 ppbbelow the action level |
| River Bend HOA WA5372750 | 1,603 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Dockton Water Association WA5319550 | 992 | 0 | 0 | 0 | 1.7 ppbbelow the action level |
| Burton Water Cooperative WA5309800 | 964 | 0 | 0 | 0 | 1.6 ppbbelow the action level |
| Preston Industrial Park Water Assn WA5318879 | 930 | 0 | 0 | 0 | 6.6 ppbbelow the action level |
| Grandview Condominiums WA53AE050 | 679 | 0 | 0 | 0 | 1.5 ppbbelow the action level |
| Westside Water Assn WA5394950 | 562 | 0 | 0 | 0 | 1.7 ppbbelow the action level |
| Sugarloaf Water System WA5346316 | 468 | 0 | 0 | 0 | 2.5 ppbbelow the action level |
| Maplewood Addition Water Coop WA5351400 | 435 | 0 | 0 | 0 | 0.6 ppbbelow the action level |
| Echo Glen Childrens Center WA5322330 | 430 | 0 | 0 | 0 | 0.7 ppbbelow the action level |
| Lake Margaret Water System WA5344200 | 406 | 0 | 0 | 0 | 1.8 ppbbelow the action level |
| Lake Retreat Camp & Conf Center WA5344400 | 404 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Gold Beach Water Company WA5328350 | 390 | 0 | 0 | 0 | 2.7 ppbbelow the action level |
| Ravensdale Water Supply WA5371400 | 389 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Beaux Arts Water Department WA5305160 | 345 | 0 | 0 | 0 | 0.9 ppbbelow the action level |
| Riverbend Mobile Home Park WA5372808 | 343 | 0 | 0 | 0 | 5 ppbbelow the action level |
| Skykomish Water Dept WA5380100 | 324 | 0 | 0 | 0 | 0.9 ppbbelow the action level |
| Foothills Water Association WA53AA296 | 271 | 0 | 0 | 0 | 0.6 ppbbelow the action level |
| Walczak 620 WA5392350 | 256 | 0 | 0 | 0 | 8.9 ppbbelow the action level |
| Spring Glen Association WA5383295 | 245 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Maury Mutual Water Co WA5352100 | 233 | 0 | 0 | 0 | 1.1 ppbbelow the action level |
| Cristalina WA5303014 | 225 | 0 | 0 | 0 | 3.2 ppbbelow the action level |
| Four Lakes WA5326195 | 212 | 0 | 0 | 0 | 1.5 ppbbelow the action level |
| South Auburn Water Association WA5381400 | 212 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Cumberland Coop Water System WA5316650 | 210 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Auburn Park Community LLC WA5303344 | 202 | 0 | 0 | 0 | 6 ppbbelow the action level |
| Mount Si Mobile Home Estates WA5356560 | 200 | 0 | 0 | 0 | 4.3 ppbbelow the action level |
| Locloman Subdivision WA5347660 | 174 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Dawnbreaker Water Association WA5312154 | 168 | 0 | 0 | 0 | 0.9 ppbbelow the action level |
| Derbyshire Scenic Acres WA5319000 | 156 | 0 | 0 | 0 | 0.7 ppbbelow the action level |
| Lake Meridian Estates (MHP) WA5323341 | 154 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Evergreen Water & Improvement Assn WA5324180 | 150 | 0 | 0 | 0 | 4.1 ppbbelow the action level |
| Four Creeks Ranch Water System WA5322740 | 150 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Upper Preston Water Assn WA5390700 | 150 | 0 | 0 | 0 | 0.5 ppbbelow the action level |
| Lake Tuck WA5344965 | 143 | 0 | 0 | 0 | 4 ppbbelow the action level |
| Diamond Springs Water Association WA5319215 | 138 | 0 | 0 | 0 | 7.1 ppbbelow the action level |
| Mariani Water System INC WA5351675 | 138 | 0 | 0 | 0 | 2.5 ppbbelow the action level |
| Twenty-Three 800 Tiger Mountain WA5390875 | 129 | 0 | 0 | 0 | 6.2 ppbbelow the action level |
| The Meadows Water System LLC WA5360095 | 127 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Valley View Mobile Park LLC WA5390998 | 126 | 0 | 0 | 0 | 0.7 ppbbelow the action level |
| Trails End WA5389050 | 117 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Edgehill Water Assn WA5322400 | 109 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Riverwood Park Community Club WA5373030 | 109 | 0 | 0 | 0 | 1.9 ppbbelow the action level |
| Woodland Heights WA5323581 | 108 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Beulah Park Community WA5306100 | 106 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Cedar Mountain Homeowners Assoc WA5302996 | 106 | 0 | 0 | 0 | 0.6 ppbbelow the action level |
| Rumbolz Sunset Water System WA5314446 | 106 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Echo Glen Water System WA5327510 | 105 | 0 | 0 | 0 | 2.5 ppbbelow the action level |
| Spring Glen Mobile Home Park WA5383290 | 96 | 0 | 0 | 0 | 6.3 ppbbelow the action level |
| King County Water District #117 WA5341980 | 95 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Mountain View Water District INC WA5356950 | 91 | 0 | 0 | 0 | 0.8 ppbbelow the action level |
| Lake Alice Water Association WA5335126 | 90 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Rakwanna Park Water Sys INC WA5325586 | 90 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Orchard Grove WA5364070 | 86 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Hazelwood Heights WA5332000 | 85 | 0 | 0 | 0 | 4.2 ppbbelow the action level |
| Sunnyslope Mutual Water System WA5352550 | 85 | 0 | 0 | 0 | 1.1 ppbbelow the action level |
| Crestview Tracts #3 WA5316231 | 77 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Remolif Addition WA5371745 | 76 | 0 | 0 | 0 | 4.4 ppbbelow the action level |
| Lake Wilderness Shore Acres Estate WA5325060 | 75 | 0 | 0 | 0 | 3.5 ppbbelow the action level |
| Luana Water Assn. WA5348800 | 71 | 0 | 0 | 0 | 2.1 ppbbelow the action level |
| Quartermaster Heights Water Assn WA5370250 | 70 | 0 | 0 | 0 | 2 ppbbelow the action level |
| Welchs Water Association WA5394170 | 69 | 0 | 0 | 0 | 3.8 ppbbelow the action level |
| Newaukum Water System WA5359220 | 62 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Rocky Acres Water System WA5316234 | 61 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Alpine Water Association WA5307667 | 58 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Fall City Water Dist.(Spring Hill) WA5383310 | 57 | 0 | 0 | 0 | 3.5 ppbbelow the action level |
| Maple Vista WA5351350 | 57 | 0 | 0 | 0 | 0.8 ppbbelow the action level |
| 85 Acres WA5322590 | 55 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Chamonix Village WA5312235 | 53 | 0 | 0 | 0 | 6.5 ppbbelow the action level |
| Elderwood Water Association WA5322690 | 52 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Timberlane Village Water WA5388385 | 51 | 0 | 0 | 0 | 1.9 ppbbelow the action level |
| Forest Grove Hills WA5325932 | 50 | 0 | 0 | 0 | 0.6 ppbbelow the action level |
| Fall City Water Dist. (Ruth) WA5302006 | 49 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Norwest Mobile Home Park WA5307574 | 49 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Skyland Park Water Association WA5380130 | 47 | 0 | 0 | 0 | 0.8 ppbbelow the action level |
| Sawyerwood Estates Water System WA5376460 | 46 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Alpine Mobile Manor WA5301830 | 45 | 0 | 0 | 0 | 1.8 ppbbelow the action level |
| Mazama Woods WA5352118 | 45 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Green Acres Water Association WA5329655 | 44 | 0 | 0 | 0 | 1.6 ppbbelow the action level |
| Shawnee Hill Condominium Ws WA5319901 | 44 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Evergreen Sky Ranch Community Wtr WA5324165 | 43 | 0 | 0 | 0 | 1.5 ppbbelow the action level |
| Bridle Trails South Water System WA5312232 | 42 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Logandale Water Assoc INC. WA5347700 | 42 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Walter Walker Water Works WA5320276 | 42 | 0 | 0 | 0 | 1.2 ppbbelow the action level |
| New Arcadia Water System WA5361533 | 40 | 0 | 0 | 0 | 0.6 ppbbelow the action level |
| Wells Water Association WA5394200 | 39 | 0 | 0 | 0 | 1 ppbbelow the action level |
| Lake Retreat Firs #2 Water Assoc. WA5344416 | 38 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Marine Estates Mutual Water Assn WA5351700 | 38 | 0 | 0 | 0 | 2.2 ppbbelow the action level |
| Noble Woods Water System WA5302308 | 37 | 0 | 0 | 0 | 0.8 ppbbelow the action level |
| Grotto Water Association WA5330050 | 36 | 0 | 0 | 0 | 2.7 ppbbelow the action level |
| Reed Ranch Road Water WA5311985 | 36 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Braunwood Estates WA5303336 | 35 | 0 | 0 | 0 | 2.2 ppbbelow the action level |
| Billington WA5380710 | 34 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Ravensdale Mobile Home Park WA5371397 | 34 | 0 | 0 | 0 | 0.5 ppbbelow the action level |
| Farrell L. E. WA5324707 | 32 | 0 | 0 | 0 | 5.1 ppbbelow the action level |
| Sawyerwood Water System WA5376462 | 32 | 0 | 0 | 0 | 4.4 ppbbelow the action level |
| Tiger Mtn Tracts WA5388315 | 30 | 0 | 0 | 0 | 0 ppbbelow the action level |
| Highlands Utility District WA5332900 | 275 | 0 | 0 | 0 | not reported |
| Tokul Creek Community WA5388625 | 34 | 0 | 0 | 0 | not reported |
| 165th Ave Water System WA5325241 | 24 | 0 | 0 | 0 | not reported |
Shaded rows report lead at or above the 15 ppb action level in their latest monitoring period. EPA sets that level for the value 9 in 10 sampled homes fall at or below; reaching it requires the utility to act, and it is not a measurement of any single tap. One system in this table is at or above it. What an action level means
USGS · Monitoring stations
The water, more recently.
Available station readings in King County, Washington. Each measurement keeps its time, unit and original source.
These readings describe water at a monitoring station. They do not test your tap, measure PFAS or lead, or determine whether water is safe to drink or swim in.
Recent observations load when this section comes into view.
How these readings update
We check for updates every 10 minutes while this section is visible and show supported observations from the last 48 hours. The time beside a reading is when USGS measured it; the checked time is when our service retrieved the response. We mark a reading more than 6 hours old as older. Provisional observations can change after USGS review. A missing reading does not mean zero or clean water.
Temperature, pH, dissolved oxygen, turbidity, conductivity, streamflow and water level are shown only where a station reports them. Different measurements have different units and sampling intervals. USGS data and documentation.
Your next step
Water testing, reports & local help.
Use these official directories to find your drinking-water agency, a certified laboratory and public water records. We have not yet added an individually reviewed local resource list for this county.
Official national directories
Water testing
Find your state’s private-well program
EPA’s state directory points well owners to local program information. Services and eligibility vary by state and county.
Water testing
Find a certified drinking-water laboratory
Use EPA’s directory to reach your state’s laboratory certification program. EPA does not provide on-request testing of residential drinking water.
Public records
Find your utility’s Consumer Confidence Report
EPA links to community water-system reports and explains how to read them. Look for your actual supplier rather than assuming every address in a county shares one system.
Public records
Explore USGS water observations
Find current and historical observations from USGS monitoring locations, including available stream, lake, and groundwater data. Measurements vary by station and do not replace a test of your household water.
A county overview cannot identify every property’s water provider. If you use a public water system, confirm its name on your bill and request its annual Consumer Confidence Report. Private wells need their own testing; public-system records do not describe a private well.
Understand water testing and laboratory reportsResource descriptions are compiled by Tap Water Lookup. Review dates describe our source check, not a new water sample. How we review sources · Suggest a correction
Explore your area
Local coverage in King County
86ZIP areas in this overview
Explore the water-system records, recent station readings and testing resources on this county page. They describe the systems and stations identified in each section; they are not a separate water test for every community.
Towns and communities
- Auburn
- Baring
- Bellevue
- Black Diamond
- Bothell
- Bryn Mawr-Skyway
- Burien
- Cottage Lake
- Des Moines
- Duvall
- East Renton Highlands
- Enumclaw
- Fairwood
- Fall City
- Federal Way
- Hobart
- Issaquah
- Kenmore
- Kent
- Kirkland
- Lake Forest Park
- Lake Marcel-Stillwater
- Lake Morton-Berrydale
- Medina
- Mercer Island
- North Bend
- Pacific
- Ravensdale
- Redmond
- Renton
- Sammamish
- SeaTac
- Seattle
- Shoreline
- Skykomish
- Snoqualmie
- Tukwila
- Union Hill-Novelty Hill
- Vashon
View ZIP areas and understand coverage
- 98001Auburn
- 98002Auburn
- 98003Federal Way
- 98004Bellevue
- 98005Bellevue
- 98006Bellevue
- 98007Bellevue
- 98008Bellevue
- 98010Black Diamond
- 98011Bothell
- 98014Lake Marcel-Stillwater
- 98019Duvall
- 98022Enumclaw
- 98023Federal Way
- 98024Fall City
- 98025
- 98027Issaquah
- 98028Kenmore
- 98029Issaquah
- 98030Kent
- 98031Kent
- 98032Kent
- 98033Kirkland
- 98034Kirkland
- 98038Hobart
- 98039Medina
- 98040Mercer Island
- 98042Lake Morton-Berrydale
- 98045North Bend
- 98047Pacific
- 98050
- 98051Ravensdale
- 98052Redmond
- 98053Union Hill-Novelty Hill
- 98055Renton
- 98056Renton
- 98057Renton
- 98058Fairwood
- 98059East Renton Highlands
- 98065Snoqualmie
- 98070Vashon
- 98072Cottage Lake
- 98074Sammamish
- 98075Sammamish
- 98077Cottage Lake
- 98092Auburn
- 98101Seattle
- 98102Seattle
- 98103Seattle
- 98104Seattle
- 98105Seattle
- 98106Seattle
- 98107Seattle
- 98108Seattle
- 98109Seattle
- 98112Seattle
- 98115Seattle
- 98116Seattle
- 98117Seattle
- 98118Seattle
- 98119Seattle
- 98121Seattle
- 98122Seattle
- 98125Seattle
- 98126Seattle
- 98133Shoreline
- 98134Seattle
- 98136Seattle
- 98144Seattle
- 98146Burien
- 98148Burien
- 98154Seattle
- 98155Lake Forest Park
- 98158SeaTac
- 98164Seattle
- 98166Burien
- 98168Tukwila
- 98174Seattle
- 98177Shoreline
- 98178Bryn Mawr-Skyway
- 98188Tukwila
- 98195Seattle
- 98198Des Moines
- 98199Seattle
- 98224Baring
- 98288Skykomish
These Census ZIP Code Tabulation Areas are grouped here by their largest county overlap. A ZIP area can cross county lines and contain several water suppliers or private wells. Place labels reflect Census geography, not verified postal city names or utility service boundaries.
Records for these areas are currently presented in this county overview rather than individual ZIP reports. An unpublished report does not mean there are no water records. Confirm your supplier on your water bill; if you use a private well, testing your own well is the relevant next step.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Database prepared 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.
Compiled by Tap Water Lookup from the sources identified on this page. Read the methodology and review process.