Tap WaterIndex

← Washington

Tap water quality report

Spanaway Water Company

EPA monitoring tested this supplier for 104 contaminants and detected 18. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

104
contaminants tested
18
detected
34,506
people served
5
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
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.

5
health-based violations
10
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1993-08-01 → 1993-08-31
MCL Health-based Archived 1993-08-01 → 1993-08-31
MCL Health-based Archived 1993-05-01 → 1993-05-31
MCL Health-based Archived 1993-05-01 → 1993-05-31
MCL Health-based Archived 1993-01-01 → 1993-01-31
MR Monitoring Archived 1992-11-01 → 1992-11-30
MR Monitoring Archived 1992-11-01 → 1992-11-30
MR Monitoring Archived 1992-02-01 → 1992-02-29
MR Monitoring Archived 1991-10-01 → 1991-10-31
MR Monitoring Archived 1979-10-01 → 1979-10-31

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0075 µg/L 7/20 2025
PFOS 0.0083 µg/L 5/20 2025
Pfpea 0.0058 µg/L 3/20 2025
Pfhxa 0.0059 µg/L 2/20 2025
PFHXS 0.0037 µg/L 2/20 2025
PFOA 0.0062 µg/L 1/20 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
Nitrate
3900 µg/L 39%
of the EPA limit 10000 µg/L
worst single sample: 4450 µg/L
130/160 SYR4 2012–2019
TTHM
8.43 µg/L 11%
of the EPA limit 80 µg/L
worst single sample: 10.5 µg/L
47/47 SYR4 2012–2019
Chloroform
5.29 µg/L
No EPA limit set
worst single sample: 6.6 µg/L
44/67 SYR4 2012–2019
Bromodichloromethane
2.5 µg/L
No EPA limit set
worst single sample: 3 µg/L
40/66 SYR4 2012–2019
Dibromochloromethane
1.24 µg/L
No EPA limit set
worst single sample: 1.3 µg/L
33/65 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
7.8 µg/L 13%
of the EPA limit 60 µg/L
worst single sample: 8.1 µg/L
13/52 SYR4 2012–2019
Trichloroacetic Acid
3.845 µg/L
No EPA limit set
worst single sample: 3.9 µg/L
12/52 SYR4 2012–2019
Nitrate-Nitrite
3565 µg/L 36%
of the EPA limit 10000 µg/L
worst single sample: 3900 µg/L
11/12 SYR4 2016–2019
Lead
0.0024 mg/L 16%
of the EPA limit 0.0150 mg/L
 10/10 LCR 2025
Dichloroacetic Acid
4.06 µg/L
No EPA limit set
worst single sample: 4.3 µg/L
9/52 SYR4 2012–2019
Arsenic
2.04 µg/L 20%
of the EPA limit 10 µg/L
worst single sample: 2.1 µg/L
4/12 SYR4 2016–2019
Bromoform
0.6900 µg/L
No EPA limit set
worst single sample: 0.7000 µg/L
3/68 SYR4 2012–2019
86 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-GammaBariumBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromoacetic AcidDinosebEthylene DibromideEndrinEthylbenzeneFluorideHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoLeadMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitritePfbaPfdaPfdoaPfeesaPfhpaPfhpsPfmbaPfmpaPFNAPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Ronda Farmer

Frequently asked questions about Spanaway Water Company

Is Spanaway Water Company tap water safe to drink?

EPA monitoring detected 18 contaminants in Spanaway Water Company'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 Spanaway Water Company's water?

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

How many people does Spanaway Water Company serve?

Spanaway Water Company reports serving 34,506 people in Washington, per its EPA record.

Has Spanaway Water Company had any water quality violations?

The EPA has 10 violations on file for Spanaway Water Company, of which 5 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.