Is Nisqually Highlands 364 Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Local government
Counties served: Thurston

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
MR	Monitoring	Resolved	1999-01-01 → 2000-07-01
MR	Monitoring	Archived	1997-09-01 → 1997-09-30
MR	Monitoring	Archived	1992-10-01 → 1992-10-31
MR	Monitoring	Archived	1992-09-01 → 1992-09-30
MR	Monitoring	Archived	1992-08-01 → 1992-08-31
MR	Monitoring	Archived	1992-07-01 → 1992-07-31
MR	Monitoring	Archived	1992-06-01 → 1992-06-30
MR	Monitoring	Archived	1992-05-01 → 1992-05-31
MR	Monitoring	Archived	1992-04-01 → 1992-04-30
MR	Monitoring	Archived	1992-03-01 → 1992-03-31

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 single worst sample on record — over 100% is worth reading, but is not by itself a violation. Formal violations are listed separately.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Lead	0.0013 mg/L 8.7% of the EPA limit 0.0150 mg/L	9/9	LCR	2024
Chloroform	10.5 µg/L No EPA limit set	3/5	SYR4	2013–2019
TTHM	11.8 µg/L 15% of the EPA limit 80 µg/L	3/3	SYR4	2013–2019
Fluoride	250 µg/L 6.3% of the EPA limit 4000 µg/L	2/2	SYR4	2017
Arsenic	4 µg/L 40% of the EPA limit 10 µg/L	1/2	SYR4	2017
Bromodichloromethane	1.3 µg/L No EPA limit set	1/5	SYR4	2013–2019
Dichloroacetic Acid	1.4 µg/L No EPA limit set	1/3	SYR4	2013–2017
Total Haloacetic Acids (HAA5)	1.4 µg/L 2.3% of the EPA limit 60 µg/L	1/3	SYR4	2013–2017

49 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalBariumBenzeneBeryllium, TotalBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChromiumDichloromethaneDalaponDibromoacetic AcidDibromochloromethaneDinosebEthylene DibromideEthylbenzeneLeadMercuryMonobromoacetic AcidMonochloroacetic AcidNitrateNitrate-NitriteNitritePentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: Kimberly Gubbe

Frequently asked questions about Nisqually Highlands 364

Is Nisqually Highlands 364 tap water safe to drink?

EPA monitoring detected 8 contaminants in Nisqually Highlands 364'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 Nisqually Highlands 364's water?

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

How many people does Nisqually Highlands 364 serve?

Nisqually Highlands 364 reports serving 162 people in Washington, per its EPA record.

Has Nisqually Highlands 364 had any water quality violations?

The EPA has 14 violations on file for Nisqually Highlands 364, of which 0 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.