Is Muckleshoot Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Native American

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.

health-based violations

violations on file

still open

Violation	Type	Status	Period
MCL	Health-based	Resolved	2008-10-01 → 2008-12-31
MR	Monitoring	Resolved	2023-10-01
Other	Monitoring	Resolved	2020-10-02
Other	Monitoring	Resolved	2020-07-01
MON	Monitoring	Resolved	2019-07-01 → 2019-07-31
MR	Monitoring	Resolved	2019-07-01 → 2019-09-30
MR	Monitoring	Resolved	2019-01-01 → 2019-12-31
RPT	Monitoring	Resolved	2018-10-10
MON	Monitoring	Resolved	2018-09-01 → 2018-09-30
MR	Monitoring	Resolved	2018-07-01 → 2018-09-30

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Copper	174 µg/L 13% of the EPA limit 1300 µg/L worst single sample: 340 µg/L	47/52	SYR4	2012–2017
Lead	19.1 µg/L 127% of the EPA limit, at the 95th percentile of samples — 15 µg/L worst single sample: 107 µg/L	27/52	SYR4	2012–2017
Chloroform	7.8585 µg/L No EPA limit set worst single sample: 9.03 µg/L	12/12	SYR4	2013–2019
Lead	0.0019 mg/L 13% of the EPA limit 0.0150 mg/L	11/11	LCR	2023
TTHM	11.65 µg/L 15% of the EPA limit 80 µg/L worst single sample: 13.3 µg/L	11/11	SYR4	2013–2019
Bromodichloromethane	2.5685 µg/L No EPA limit set worst single sample: 2.87 µg/L	10/12	SYR4	2013–2019
Dichloroacetic Acid	2.61 µg/L No EPA limit set worst single sample: 2.7 µg/L	10/11	SYR4	2013–2019
Total Haloacetic Acids (HAA5)	2.61 µg/L 4.4% of the EPA limit 60 µg/L worst single sample: 2.7 µg/L	10/11	SYR4	2013–2019
Dibromochloromethane	1.24 µg/L No EPA limit set worst single sample: 1.4 µg/L	9/12	SYR4	2013–2019
Arsenic	8 µg/L 80% of the EPA limit 10 µg/L	5/11	SYR4	2012–2019
Combined Radium (-226 And -228)	1.7288 pCi/L 35% of the EPA limit 5 pCi/L worst single sample: 1.786 pCi/L	5/5	SYR4	2013–2019

69 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,3,7,8-TCDD2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalBromoformChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneFluorideGlyphosateHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitriteOxamylPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: NOESKE, STEPHEN
Phone: 253-294-8190
Email: [email protected]

Frequently asked questions about Muckleshoot

Is Muckleshoot tap water safe to drink?

EPA monitoring detected 11 contaminants in Muckleshoot'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 Muckleshoot's water?

EPA monitoring detected Copper, Lead, Chloroform, Lead, TTHM, and others. The full list with the level and data source for each is above.

How many people does Muckleshoot serve?

Muckleshoot reports serving 3,250 people in Washington, per its EPA record.

Has Muckleshoot had any water quality violations?

The EPA has 98 violations on file for Muckleshoot, of which 1 is 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.