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Tap water quality report

Willow Tree Park

EPA monitoring tested this supplier for 71 contaminants and detected 15. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

71
contaminants tested
15
detected
176
people served
8
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Yakima

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.

8
health-based violations
89
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 2004-02-01 → 2004-02-29
MCL Health-based Archived 1996-07-01 → 1996-07-31
MCL Health-based Archived 1996-02-01 → 1996-02-29
MCL Health-based Archived 1996-02-01 → 1996-02-29
MCL Health-based Archived 1996-01-01 → 1996-01-31
MCL Health-based Archived 1996-01-01 → 1996-01-31
MCL Health-based Archived 1995-06-01 → 1995-06-30
MCL Health-based Archived 1995-06-01 → 1995-06-30
MON Monitoring Resolved 2018-11-01 → 2018-11-30
MON Monitoring Resolved 2018-10-01 → 2018-10-31

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.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Nitrate
2840 µg/L 28%
of the EPA limit 10000 µg/L
 20/20 SYR4 2012–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 11/11 LCR 2025
Nitrate-Nitrite
2840 µg/L 28%
of the EPA limit 10000 µg/L
 10/10 SYR4 2012–2019
Arsenic
0.3000 µg/L 3%
of the EPA limit 10 µg/L
 1/1 SYR4 2018
Barium
7.99 µg/L 0.4%
of the EPA limit 2000 µg/L
 1/1 SYR4 2018
Copper
2.22 µg/L 0.2%
of the EPA limit 1300 µg/L
 1/1 SYR4 2018
Chloroform
0.6000 µg/L
No EPA limit set
 1/5 SYR4 2012–2018
Chromium
0.2700 µg/L 0.3%
of the EPA limit 100 µg/L
 1/1 SYR4 2018
Dibromoacetic Acid
2.6 µg/L
No EPA limit set
 1/4 SYR4 2012–2018
Dichloroacetic Acid
1.8 µg/L
No EPA limit set
 1/4 SYR4 2012–2018
Fluoride
90 µg/L 2.3%
of the EPA limit 4000 µg/L
 1/1 SYR4 2018
Lead
0.2800 µg/L 1.9%
of the EPA limit 15 µg/L
 1/1 SYR4 2018
TTHM
0.6000 µg/L 0.8%
of the EPA limit 80 µg/L
 1/1 SYR4 2014
Thallium, Total
0.7100 µg/L 36%
of the EPA limit 2 µg/L
 1/1 SYR4 2018
Total Haloacetic Acids (HAA5)
4.4 µg/L 7.3%
of the EPA limit 60 µg/L
 1/4 SYR4 2012–2018
56 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAntimony, TotalAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChlordaneDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Bennett Osborne

Frequently asked questions about Willow Tree Park

Is Willow Tree Park tap water safe to drink?

EPA monitoring detected 15 contaminants in Willow Tree Park'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 Willow Tree Park's water?

EPA monitoring detected Nitrate, Lead, Nitrate-Nitrite, Arsenic, Barium, and others. The full list with the level and data source for each is above.

How many people does Willow Tree Park serve?

Willow Tree Park reports serving 176 people in Washington, per its EPA record.

Has Willow Tree Park had any water quality violations?

The EPA has 89 violations on file for Willow Tree Park, of which 8 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.