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Tap water quality report

Tacoma Water Division City of

EPA monitoring tested this supplier for 108 contaminants and detected 23. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

108
contaminants tested
23
detected
446,170
people served
25
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Surface water
Ownership
Local government
Counties served
Pierce

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

25
health-based violations
33
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2014-11-01
TT Health-based Resolved 2014-11-01
TT Health-based Resolved 2014-11-01
TT Health-based Resolved 2014-11-01
TT Health-based Resolved 2014-10-01
TT Health-based Resolved 2014-10-01
TT Health-based Resolved 2014-10-01
TT Health-based Resolved 2014-09-01
TT Health-based Resolved 2014-09-01
TT Health-based Resolved 2014-09-01

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFHXS 0.0051 µg/L 4/8 2025
PFBS 0.0033 µg/L 1/8 2025

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
TTHM
33.847 µg/L 42%
of the EPA limit 80 µg/L
worst single sample: 59.44 µg/L
423/425 SYR4 2012–2019
Chloroform
31 µg/L
No EPA limit set
worst single sample: 55 µg/L
374/408 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
31 µg/L 52%
of the EPA limit 60 µg/L
worst single sample: 43 µg/L
354/388 SYR4 2012–2019
Dichloroacetic Acid
13 µg/L
No EPA limit set
worst single sample: 19 µg/L
318/361 SYR4 2012–2019
Trichloroacetic Acid
19 µg/L
No EPA limit set
worst single sample: 24 µg/L
316/359 SYR4 2012–2019
Bromodichloromethane
3.2 µg/L
No EPA limit set
worst single sample: 23 µg/L
314/362 SYR4 2012–2019
Nitrate
4540 µg/L 45%
of the EPA limit 10000 µg/L
worst single sample: 4950 µg/L
180/224 SYR4 2012–2019
Dibromochloromethane
2.18 µg/L
No EPA limit set
worst single sample: 2.7 µg/L
85/460 SYR4 2012–2019
Nitrate-Nitrite
4268 µg/L 43%
of the EPA limit 10000 µg/L
worst single sample: 4830 µg/L
57/73 SYR4 2012–2019
Fluoride
880 µg/L 22%
of the EPA limit 4000 µg/L
 23/41 SYR4 2012–2019
Bromoform
1.2 µg/L
No EPA limit set
 20/465 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 17/17 LCR 2025
Barium
44 µg/L 2.2%
of the EPA limit 2000 µg/L
worst single sample: 70 µg/L
9/41 SYR4 2012–2019
Chromium
1.65 µg/L 1.7%
of the EPA limit 100 µg/L
worst single sample: 2 µg/L
8/41 SYR4 2012–2019
Arsenic
6.73 µg/L 67%
of the EPA limit 10 µg/L
worst single sample: 7 µg/L
7/42 SYR4 2012–2019
Copper
151.9 µg/L 12%
of the EPA limit 1300 µg/L
worst single sample: 160 µg/L
7/41 SYR4 2012–2019
Trichloroethylene
1.58 µg/L 32%
of the EPA limit 5 µg/L
worst single sample: 1.7 µg/L
7/46 SYR4 2012–2019
Gross Beta Particle Activity
3.19 pCi/L
No EPA limit set
worst single sample: 3.2 pCi/L
2/7 SYR4 2013–2014
Lead
2.91 µg/L 19%
of the EPA limit 15 µg/L
worst single sample: 3 µg/L
2/41 SYR4 2012–2019
Monochloroacetic Acid
2.38 µg/L
No EPA limit set
worst single sample: 2.4 µg/L
2/434 SYR4 2012–2019
Mercury
0.7000 µg/L 35%
of the EPA limit 2 µg/L
 1/41 SYR4 2012–2019
85 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalAsbestosAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromateChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMethoxychlorMonobromoacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Keri Burchard-Juarez

Frequently asked questions about Tacoma Water Division City of

Is Tacoma Water Division City of tap water safe to drink?

EPA monitoring detected 23 contaminants in Tacoma Water Division City of's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Tacoma Water Division City of's water?

EPA monitoring detected TTHM, Chloroform, Total Haloacetic Acids (HAA5), Dichloroacetic Acid, Trichloroacetic Acid, and others. The full list with the level and data source for each is above.

How many people does Tacoma Water Division City of serve?

Tacoma Water Division City of reports serving 446,170 people in Washington, per its EPA record.

Has Tacoma Water Division City of had any water quality violations?

The EPA has 33 violations on file for Tacoma Water Division City of, of which 25 are health-based (a contaminant limit or required treatment was breached) and 0 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.