Tap WaterIndex

← Washington

Tap water quality report

Hillside Park Addition

EPA monitoring tested this supplier for 64 contaminants and detected 10. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

64
contaminants tested
10
detected
45
people served
5
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.

5
health-based violations
92
violations on file
0
still open
ViolationTypeStatusPeriod
MCL Health-based Resolved 2024-07-01 → 2024-07-31
MCL Health-based Archived 2005-10-01 → 2005-10-31
MCL Health-based Archived 2004-12-01 → 2004-12-31
MCL Health-based Archived 1996-06-01 → 1996-06-30
MCL Health-based Archived 1995-10-01 → 1995-10-31
Other Monitoring Resolved 2016-07-01
MR Monitoring Resolved 2014-01-01 → 2016-12-31
MR Monitoring Resolved 2014-01-01 → 2016-12-31
MR Monitoring Resolved 2014-01-01 → 2016-12-31
MR Monitoring Resolved 2014-01-01 → 2016-12-31

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 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
2096 µg/L 21%
of the EPA limit 10000 µg/L
worst single sample: 2100 µg/L
22/26 SYR4 2012–2019
Lead
0.0010 mg/L 6.7%
of the EPA limit 0.0150 mg/L
 9/9 LCR 2023
Nitrate-Nitrite
2076 µg/L 21%
of the EPA limit 10000 µg/L
worst single sample: 2100 µg/L
7/7 SYR4 2012–2019
Arsenic
8.085 µg/L 81%
of the EPA limit 10 µg/L
worst single sample: 8.1 µg/L
4/4 SYR4 2012–2019
Fluoride
355.5 µg/L 8.9%
of the EPA limit 4000 µg/L
worst single sample: 376 µg/L
3/4 SYR4 2012–2019
Beryllium, Total
3.63 µg/L 91%
of the EPA limit 4 µg/L
worst single sample: 3.8 µg/L
2/4 SYR4 2012–2019
Lead
3.38 µg/L 23%
of the EPA limit 15 µg/L
worst single sample: 3.5 µg/L
2/4 SYR4 2012–2019
Antimony, Total
3.6 µg/L 60%
of the EPA limit 6 µg/L
 1/4 SYR4 2012–2019
Barium
22.3 µg/L 1.1%
of the EPA limit 2000 µg/L
 1/4 SYR4 2012–2019
Selenium
5.2 µg/L 10%
of the EPA limit 50 µg/L
 1/4 SYR4 2012–2019
54 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-Dichloroethane1,2-Dichloropropane2,4,5-TP2,4-DAtrazineBhc-GammaBenzeneBenzo(A)PyreneBromodichloromethaneBromoformChlorobenzeneCopperCyanideCadmiumCarbon TetrachlorideChlordaneChloroformChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDibromochloromethaneDinosebEndrinEthylbenzeneHexachlorobenzeneHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorNitritePentachlorophenolPicloramSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Bennett Osborne

Frequently asked questions about Hillside Park Addition

Is Hillside Park Addition tap water safe to drink?

EPA monitoring detected 10 contaminants in Hillside Park Addition'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 Hillside Park Addition's water?

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

How many people does Hillside Park Addition serve?

Hillside Park Addition reports serving 45 people in Washington, per its EPA record.

Has Hillside Park Addition had any water quality violations?

The EPA has 92 violations on file for Hillside Park Addition, 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.