Is Tacoma, WA Tap Water Safe to Drink? 2026 Report

Name: Tacoma, WA Drinking Water Quality
Creator: WaterVerge
License: https://creativecommons.org/licenses/by/4.0/

01The verdict: is Tacoma water safe?

Tacoma's drinking water has significant quality concerns based on EPA testing data. With a grade of F (32.2/100), the system has issues across multiple categories. A water filter is recommended for all residents. The city's 130 water systems serve approximately 628,246 residents using surface water (rivers, lakes, or reservoirs).

The concern

Copper is over its legal limit

Measured at 2.30 mg/L against the EPA Action Level of 1.3 mg/L. The ledger below shows how far over — and which filter removes it.

See the measurement ↓

The good news

Lead is well under the limit

90th-percentile lead is 3.2 ppb — beneath the 15 ppb federal action level and under the 5 ppb watch threshold.

See the trend ↓

Keep watching

38 violations in the last five years

Recent compliance history is the best predictor of future problems — the year-by-year record is below.

See the record ↓

Tacoma's drinking water received a grade of F (32.2 out of 100), indicating failing water quality. The city's 130 water systems serve approximately 628,246 residents using surface water.

Lead levels were measured at 3.2 ppb (90th percentile), well within EPA limits. UCMR 5 testing detected 10 PFAS compounds, with levels exceeding EPA maximum contaminant levels in the water supply. The system has 2772 violations on record, including 232 health-based violations. 271 remain unresolved.

Tacoma ranks #294 out of 294 cities in Washington for water quality, placing it among the lowest-rated in the state. The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection. Of particular concern: PFAS "forever chemical" levels exceed the 2024 EPA maximum contaminant levels. These synthetic compounds don't break down naturally and require specialized filtration such as reverse osmosis or granular activated carbon. Hexavalent chromium (chromium-6) was detected at 0.49 µg/L in UCMR 3 testing. While below California's 10 µg/L limit and with no federal MCL set, residents sensitive to this contaminant may consider reverse osmosis filtration. As a major metropolitan system serving over 628K residents, Tacoma faces large-scale infrastructure challenges including aging pipes and the complexity of treating water across a vast distribution network. The system has seen 38 violations in the past five years, suggesting a pattern of compliance challenges that residents should monitor closely.

How the 32.2/100 breaks down Methodology →

ViolationsHistorical violation record including health-based and monitoring violations.

0 / 45F

Lead & CopperLead at 3.2 ppb (90th percentile).

14 / 20C

Contaminants10 PFAS compounds detected.

6.2 / 20F

ComplianceMonitoring and reporting compliance with EPA regulations.

8 / 10B

Source RiskWater source: Surface water.

4 / 5B

02What's in Tacoma's water

Every contaminant flagged in Tacoma, on one shared scale: distance to its own legal limit. The red line is the limit — anything past it is out of compliance, and the closer a bar gets, the less headroom the system has.

12 detections · sorted by % of legal limit

Over the limit Elevated — watch Within limits

0 50% LEGAL LIMIT 150%

Copper (90th percentile) Inorganic · – details

2.30 mg/L 120% of limit

Over Limit — EPA Action Level: 1.3 mg/L

Exceeds the EPA action level. Copper leaches from household plumbing — flush taps for 30 seconds before drinking, and consider a certified filter.

Exceeds Limit What to do →

PFOS PFAS / Forever Chemical · + details

0.1536 µg/L 120% of limit

Manganese Inorganic

101.6 µg/L 120% of limit

Chlorate Disinfection Byproduct

310.0 µg/L 120% of limit

Perchlorate Inorganic

4.00 µg/L 67% of limit

Vanadium Inorganic

6.60 µg/L 31% of limit

Lead (90th percentile) Inorganic / Heavy Metal · + details

3.2 ppb 21% of limit

1,4-Dioxane Organic

0.07 µg/L 21% of limit

Strontium Inorganic

120.0 µg/L 8% of limit

HAA5 (Disinfection Byproducts) Disinfection Byproduct · + details

4.2 µg/L 7% of limit

Molybdenum Inorganic

2.60 µg/L 7% of limit

Chromium-6 (Hexavalent Chromium) Inorganic · + details

0.49 µg/L 5% of limit

41 contaminants tested under EPA SDWIS, LCR and UCMR programs · 21 detected · 2 PFAS over EPA MCL · PFAS hazard index 39.98 (above the 1.0 threshold) Contaminants without a federal MCL are shown against the strictest state or advisory level named in each row.

All Tested Contaminants

Full contaminants report

Contaminant	Detected Level	EPA Limit	Unit	Category	Status
Lead (90th percentile)	3.2	15	ppb	Inorganic	Safe
Copper (90th percentile)	2.30	1.3	mg/L	Inorganic	Over Limit
11Cl-PF3OUdS	ND	HI	µg/L	PFAS	Not Detected
4:2 FTS	ND	HI	µg/L	PFAS	Not Detected
6:2 FTS	0.009	HI	µg/L	PFAS	Detected
8:2 FTS	ND	HI	µg/L	PFAS	Not Detected
9Cl-PF3ONS	ND	HI	µg/L	PFAS	Not Detected
ADONA	ND	HI	µg/L	PFAS	Not Detected
HFPO-DA	ND	0.01	µg/L	PFAS	Not Detected
lithium	ND	HI	µg/L	PFAS	Not Detected
NEtFOSAA	ND	HI	µg/L	PFAS	Not Detected
NFDHA	ND	HI	µg/L	PFAS	Not Detected
NMeFOSAA	ND	HI	µg/L	PFAS	Not Detected
PFBA	0.014	HI	µg/L	PFAS	Detected
PFBS	0.035	HI	µg/L	PFAS	Detected
PFDA	ND	HI	µg/L	PFAS	Not Detected
PFDoA	ND	HI	µg/L	PFAS	Not Detected
PFEESA	ND	HI	µg/L	PFAS	Not Detected
PFHpA	0.006	HI	µg/L	PFAS	Detected
PFHpS	ND	HI	µg/L	PFAS	Not Detected
PFHxA	0.048	HI	µg/L	PFAS	Detected
PFHxS	0.056	HI	µg/L	PFAS	Detected
PFMBA	ND	HI	µg/L	PFAS	Not Detected
PFMPA	ND	HI	µg/L	PFAS	Not Detected
PFNA	ND	HI	µg/L	PFAS	Not Detected
PFOA	0.006	0.004	µg/L	PFAS	Over MCL
PFOS	0.154	0.004	µg/L	PFAS	Over MCL
PFPeA	0.110	HI	µg/L	PFAS	Detected
PFPeS	0.020	HI	µg/L	PFAS	Detected
PFTA	ND	HI	µg/L	PFAS	Not Detected
PFTrDA	ND	HI	µg/L	PFAS	Not Detected
PFUnA	ND	HI	µg/L	PFAS	Not Detected

Data source: EPA SDWIS, UCMR 5, local utility CCR.

Pb Lead in Washington
Cities ranked by 90th-percentile lead PF PFAS in Washington
Cities ranked by compounds detected Cu Copper in Washington
Cities ranked by 90th-percentile copper

03Tacoma's ten-year track record

Each box is one year. A green check means no EPA violations; a numbered badge counts that year's violations — red if any were health-based, amber if they were monitoring or paperwork issues. The system has 2772 violations on record, including 232 health-based violations. 271 remain unresolved.

2017 3 1 open

2018 5 3 open

2019 clean

2020 90 70 open

2021 6 violations

2022 5 violations

2023 clean

2024 1 1 open

2025 26 violations

2026 clean

3 of the last ten years were clean. The numbered years had EPA violations — red when any were health-based, amber when they were paperwork or missed-testing issues.

136 monitoring & paperwork 75 still unresolved

UCMR 5 TestingPFAS10 PFAS "forever chemical" compounds detectedPFAS levels exceed EPA maximum contaminant levels. Reverse osmosis or activated carbon filtration recommended.

July 2026UpdateWater quality data updatedLatest EPA compliance and testing data incorporated into Tacoma's water quality assessment. Grade: F (32.2/100).

December 2025DisasterSEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDESFederal disaster declaration (FEMA DR-3629). Flood event — may have impacted local water infrastructure.

October 2025Violation1 drinking water violation recordedContaminants: Revised Total Coliform Rule.Resolved

September 2025Violation1 drinking water violation recordedContaminants: Revised Total Coliform Rule.Resolved

August 2025Violation1 drinking water violation recordedContaminants: Revised Total Coliform Rule.Resolved

Lead, 90th percentileppb · lower is better

▼ Down 17 ppb since 1992. Latest reading: 0 ppb (2025) — 0% of the action level. Sampled at higher-risk homes (90th percentile).

Copper, 90th percentilemg/L · lower is better

▲ Up 0.68 mg/L since 1992. The latest reading (2.3 mg/L, 2022) is over the action level. Sampled at higher-risk homes (90th percentile).

04Where Tacoma's water comes from

Tacoma's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.

Source

Surface Water

Rivers, lakes, or reservoirs — more exposed to runoff, agriculture, and seasonal swings than groundwater.

Treatment

Local treatment

Multi-barrier treatment: coagulation, sedimentation, filtration, and disinfection to meet EPA standards.

Distribution

130 systems

130 water systems (19 wholesalers), operated under local government ownership.

Delivery

628,246 people

Residents served across Tacoma's service area.

Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards. These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge. The system is operated by local government ownership and serves approximately 628,246 people through 130 water systems.

System name	PWSID	Population	Source
TACOMA WATER DIVISION CITY OF	`WA5386800`	448,771	Surface Water
SOUTHWOOD	`WA5382844`	64,155	Purchased Surface Water
PARKLAND LIGHT & WATER COMPANY	`WA5366200`	29,595	Groundwater
SUMMIT WATER & SUPPLY CO	`WA5385050`	16,109	Groundwater
PEACOCK HILL	`WA5366637`	7,401	Groundwater
ARTONDALE	`WA5303160`	5,828	Groundwater
POINT EVANS	`WA5368065`	5,211	Groundwater
MINTERBROOK	`WA5354740`	5,083	Groundwater
PARKVIEW TERRACE	`WA5366215`	3,730	Groundwater
HORIZONS WEST	`WA5334375`	3,454	Groundwater
STROHS WATER COMPANY INC	`WA5384670`	3,192	Groundwater
CEDAR CREST	`WA5311887`	2,954	Groundwater
OLYMPIC MALL	`WA5363479`	2,681	Groundwater
MIRRORMONT	`WA5355250`	2,083	Groundwater
PALMER LAKE	`WA5365745`	1,924	Groundwater
LAKE MINTERWOOD	`WA5355210`	1,539	Groundwater
EVERGREEN SHORES	`WA5324163`	1,329	Groundwater
QUISTORFF	`WA5370550`	1,113	Groundwater
SUNSHINE ACRES	`WA5386250`	1,074	Groundwater
HOLIDAY RANCHETTES	`WA5333677`	1,050	Groundwater
ROSARIO	`WA5374270`	1,031	Surface Water
LAKE LAWRENCE	`WA5322572`	914	Groundwater
ROSEDALE EAST	`WA5309490`	798	Groundwater
LACAMAS FARMSTEADS	`WA5302117`	615	Groundwater
WICKS LAKE RANCHES	`WA5396728`	615	Groundwater
RAFT ISLAND	`WA5370760`	575	Groundwater
FOXHALL	`WA5310991`	549	Groundwater
BETHEL GREEN ACRES WATER ASSN	`WA5305980`	522	Groundwater
ROLLING FIRS EVERGREEN TERRACE	`WA5373975`	514	Groundwater
S & I	`WA5375154`	482	Groundwater
CLASSIC HEIGHTS	`WA5363381`	480	Groundwater
ROSEDALE HEIGHTS TRAILER PARK	`WA5374371`	444	Groundwater
HENDERSON BOULEVARD	`WA5308359`	418	Groundwater
ALLYN SHOPPING CENTER	`WA5301695`	414	Groundwater
BUCKLIN	`WA5366936`	402	Groundwater
ALPINE HILLS	`WA5301826`	363	Groundwater
BLACK LAKE ESTATES	`WA5326071`	329	Groundwater
ANDREWS FIRST	`WA5317241`	299	Groundwater
SHORECREST	`WA5378618`	289	Groundwater
RIVER PARK	`WA5372776`	277	Groundwater
ORCAS HIGHLANDS	`WA5313301`	260	Purchased Surface Water
Cole	`WA5335363`	257	Groundwater
OLALLA	`WA5363215`	239	Groundwater
KOPACHUCK	`WA5343065`	236	Groundwater
NELSON RIDGE	`WA5306081`	232	Groundwater
CAMELOT AND WESTERN SKIES	`WA5310808`	228	Groundwater
CRISTALINA	`WA5303014`	225	Groundwater
JACKSON LAKE SOUTH	`WA5357214`	225	Groundwater
STRATTONWOOD	`WA5384618`	220	Groundwater
NISQUALLY PARK	`WA5359588`	218	Groundwater
SHAWS COVE	`WA5377960`	217	Groundwater
PINE LAKE MOBILE HOME EST 1 3	`WA5367397`	207	Groundwater
LEE	`WA5346658`	193	Groundwater
HARBOR HEIGHTS	`WA5331001`	188	Groundwater
RANCH	`WA5335354`	183	Groundwater
PARKSHORE ESTATES	`WA5366146`	183	Groundwater
HINTZVILLE ACRES	`WA5310440`	170	Groundwater
CEDAR GROVE	`WA5311914`	156	Groundwater
DRIFTWOOD VALLEY ASSOC (DVA)	`WA5320003`	151	Groundwater
JOHANSON	`WA5336782`	148	Groundwater
ISRAEL PLACE SAN ANGELO PARK	`WA5336274`	146	Groundwater
GLENWOOD STATION	`WA5300561`	144	Groundwater
LITTLE TREE	`WA5302236`	143	Groundwater
LAKE TUCK	`WA5344965`	143	Groundwater
MAINLAND VIEW MANOR	`WA5347248`	143	Groundwater
HOLLY TIDES	`WA5333695`	140	Groundwater
MINTER CREEK RAPIDS	`WA5355175`	137	Groundwater
FOREST PARK	`WA5307167`	127	Groundwater
REGENCY PARK	`WA5371727`	123	Groundwater
CEDARWOOD SOUTH UNION ESTATES	`WA5300253`	119	Groundwater
CASCADE HIGHLANDS NORTH	`WA5355631`	119	Groundwater
FOSS ROAD	`WA5363918`	119	Groundwater
MADRONA POINT	`WA5350075`	111	Groundwater
ROYALWOOD	`WA5374743`	111	Groundwater
RANCH ACRE	`WA5328551`	109	Groundwater
HOMESTEAD ACRES	`WA5333969`	109	Groundwater
CUYAMACA VILLAGE	`WA5317100`	106	Groundwater
MAY VOLT HILLS	`WA5317690`	106	Groundwater
CLEAR CREEK ESTATES	`WA5347431`	101	Groundwater
BAR B ESTATE MANOR	`WA5322751`	96	Groundwater
ROSEDALE COMMUNITY CLUB	`WA5374364`	96	Groundwater
RIVERVIEW	`WA5372975`	95	Groundwater
ASPINWALL ESTATES	`WA5301463`	93	Groundwater
CEDARBROOK	`WA5314001`	93	Groundwater
CASCADE HIGHLANDS	`WA5345061`	93	Groundwater
CRESCENT VALLEY #333	`WA5337654`	91	Groundwater
RONDELAY MEADOWS	`WA5374130`	90	Groundwater
GOLDEN MEADOW	`WA53AA608`	90	Groundwater
GLENWOOD FARMS 1 EAST	`WA5336241`	87	Groundwater
CREEKSIDE MEADOWS DIVISION II	`WA5304863`	85	Groundwater
LIBBY ROAD EAST	`WA5347124`	85	Groundwater
PURDY ACRES EAST	`WA5370000`	85	Groundwater
SILVER SPRINGS ESTATES	`WA5379275`	80	Groundwater
SPRUCE ROAD	`WA5383424`	80	Groundwater
FOUR CORNERS	`WA5315296`	77	Groundwater
LOOKOUT POINT	`WA5300045`	72	Groundwater
SOUTHCREEK #1	`WA5325707`	69	Groundwater
PACIFIC VENTURES	`WA5329921`	69	Groundwater
BELWOOD PARK	`WA5305640`	66	Groundwater
SIVO ACRES	`WA5323911`	66	Groundwater
LITTLE LAKE MOBILE HOME PARK	`WA5347535`	65	Groundwater
RYANWOOD	`WA5319601`	64	Groundwater
CURRIES LANDING	`WA5303463`	61	Groundwater
GREENWOOD ESTATES	`WA5329810`	61	Groundwater
HENDERSON BAY	`WA5377147`	61	Groundwater
SKOOKUM RANCH	`WA5308586`	60	Groundwater
PHELPS ROAD	`WA5363210`	58	Groundwater
WINDDRIFT WELL	`WA5301023`	53	Groundwater
EAGLE ESTATES	`WA5302348`	53	Groundwater
KAREN PLACE	`WA5302860`	53	Groundwater
DELTA LONG LK ACRE TRACTS	`WA5310340`	53	Groundwater
CRESCENT PARK	`WA5315999`	53	Groundwater
RAINWOOD	`WA5314730`	48	Groundwater
GLENWOOD FARMS 2 WEST	`WA5336233`	48	Groundwater
MUCK CREEK HILL	`WA5350225`	46	Groundwater
INLETS END	`WA5306705`	45	Groundwater
WALTER WALKER WATER WORKS	`WA5320276`	42	Purchased Groundwater
SEHMEL ROAD	`WA5320481`	42	Groundwater
SUMMERHILL	`WA5384898`	42	Groundwater
LONG LAKE VIEW EST 1	`WA5348030`	39	Groundwater
GREENBRIAR	`WA5329345`	37	Groundwater
CRYSTAL SPRINGS	`WA5330049`	37	Groundwater
SCHMID	`WA5376658`	37	Groundwater
VERDAN ANDERSON HILL	`WA5391470`	37	Groundwater
BROOKDALE OWNERS ASSOCIATION	`WA5329629`	35	Groundwater
WALDEN WATER	`WA5343887`	34	Groundwater
RED CEDAR ESTATES	`WA5371610`	34	Groundwater
ROCKY BAY	`WA5373620`	34	Groundwater
BROOKHAVEN	`WA5308760`	32	Groundwater
CLARK & OWENS WATER SYSTEM	`WA5315864`	26	Groundwater

Water bodies near Tacoma

North Fork Clover Creek · river Clover Creek · river Flett Creek · river Leach Creek · river Leach · river

As a surface-water system, these water bodies may directly influence Tacoma's drinking water supply.

05Pressure on Tacoma's watershed

Outside forces that shape what reaches the treatment plant. None of these is a verdict on the tap by itself — but each adds pressure worth knowing about.

Industrial discharge

Moderate — reported releases upstream

5 facilities within 10 miles reported 54k lb released to surface water in the latest EPA Toxics Release Inventory. Proximity doesn't equal tap contamination — treatment and hydrology decide — but it's pressure on the watershed.

WESTROCK TACOMA MILL — methanol 53k lb · 1.7 mi

PABCO ROOFING PRODUCTS — copper compounds 1k lb · 2.6 mi

US OIL & REFINING CO — ammonia 286 lb · 3.2 mi

+ 2 more facilities

Flood & storm history

Recurring — declared disasters

10 federal disaster declarations on record for Pierce County. Flooding and severe storms can overwhelm treatment plants, cause sewage overflows, and push runoff into supplies.

SEVERE STORMS, STRAIGHT-LINE WINDS, FLOODING, LANDSLIDES, AND MUDSLIDES Dec 2025 · DR-3629

SEVERE WINTER STORM, LANDSLIDES, MUDSLIDES, AND FLOODING Jan 2009 · DR-1817

HURRICANE KATRINA EVACUATION Sep 2005 · DR-3227

Superfund proximity

Multiple tracked sites nearby

4 National Priorities List sites within 10 miles. Proximity does not necessarily indicate tap-water contamination — the connection depends on hydrology and treatment.

COMMENCEMENT BAY SOUTH TACOMA CHANNEL 1.7 mi

COMMENCEMENT BAY NEAR SHORE TIDE FLATS 2.3 mi

LAKEWOOD 7.9 mi

+ 1 more sites

06How Tacoma compares

Scores for nearby Washington cities on one line, with the average marked.

91.6 · A

44.4 · F

42.3 · F

39.2 · F

32.9 · F

Tacoma (this city)

32.2 · F

dashed line = Washington average (54/100)

Tacoma scores 32.2/100 — below the Washington average of 54/100. Full Washington rankings →

FSeattle, WA
42.3 / 100 FVancouver, WA
32.9 / 100 FSpokane, WA
39.2 / 100 FKent, WA
44.4 / 100 ABellevue, WA
91.6 / 100 DEverett, WA
45.4 / 100

Pierce water quality rankings
Compare all cities in the county — grades, violations, and contaminant data side by side.→

07What to do at home

Steps matched to what testing actually found in Tacoma's water — not generic advice.

Because of pfas

Filter drinking & cooking water

Reverse osmosis system. PFAS compounds exceed EPA maximum contaminant levels

Compare tested filters →

Because lead was detected

Flush taps & check your service line

Lead leaches from pipes as water sits. Run cold water 30 seconds before drinking (especially mornings), and ask the utility whether your address still has a lead service line.

Lead risks explained →

Stay informed

Watch for Tacoma alerts

This area has a history of flood declarations — after severe weather, watch for boil-water advisories from the utility, and check the live alerts on this page.

All water alerts →

FAQ

Frequently asked questions

Is Tacoma, WA tap water safe to drink?

Tacoma's water quality earned a grade of F (32.2/100). Significant issues have been found. A water filter is strongly recommended. The city ranks #294 out of 294 cities tested in Washington.

What contaminants are in Tacoma's water?

Lead was measured at 3.2 ppb (90th percentile). 10 PFAS compounds were detected. 2772 violations are on record.

How is Tacoma's water quality grade calculated?

The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.

Do I need a water filter in Tacoma?

PFAS compounds exceed EPA limits — a reverse osmosis or activated carbon filter is recommended.

Where does Tacoma's water come from?

Tacoma's water is sourced from Surface water. The city has 130 water systems serving approximately 628,246 residents.

What health violations has Tacoma's water system had?

Tacoma has 232 health-based violations on record. The most recent violation was recorded in October 2025. Health-based violations mean the water exceeded EPA maximum contaminant levels (MCLs) for a regulated substance. 271 violations remain unresolved.

Why does Tacoma have so many PFAS compounds in its water?

10 different PFAS "forever chemical" compounds were detected in Tacoma's water supply during UCMR 5 testing. PFAS contamination often originates from proximity to military installations (AFFF firefighting foam), airports, industrial manufacturing sites, or wastewater treatment facilities. Some levels exceed the 2024 EPA maximum contaminant levels — a reverse osmosis or NSF-certified activated carbon filter is strongly recommended.

How does Tacoma's water compare to other cities?

Tacoma ranks #294 out of 294 cities in Washington (better than 0% of state cities) and #15275 out of 15382 cities nationally (1th percentile). The grade of F reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.

Copper Contaminant Profile EPA action levels, health effects, and copper removal options. Read the guide → PFAS Contaminant Profile Detailed profile on PFAS contamination in US water systems. Read the guide → PFAS Forever Chemicals Explained Learn what PFAS are, how they get into water, and what filtration removes them. Read the guide →

About Tacoma, WA: Tacoma is a city in and the county seat of Pierce County, Washington, United States. A port city, it is situated along the Puget Sound roughly 30 miles (48 km) from Seattle and Olympia, and 58 miles (93 km) northwest of Mount Rainier National Park. Tacoma is the second-largest city in the Puget Sound area and the third-most populous city in the state with a population of 219,346 at the 2020 census. Tacoma is the economic and cultural center of the South Sound region, which has a population of about 1 million. Median household income $79,085 · median home value $415,378 · median age 36.9 · 56.8% homeowners · 32.8% college educated. Wikipedia → Service area: 26 ZIP codes across Pierce.

Show ZIP codes

9840198402984039840498405984069840798408984099841198412984139841598416984179841898419984219842298444984489846598466984719848198490

Sources: EPA SDWIS & ECHO · UCMR 3–5 · Lead & Copper Rule samples · EPA TRI · U.S. Drought Monitor · FEMA declarations. Data last updated Jul 2026. Analysis by the WaterVerge Editorial Team · methodology.

Is Tacoma, WA Tap Water Safe to Drink?