Is Mount Adams Vista Water Tap Water Safe? Quality Report

Water source: Ground water
Ownership: Private
Counties served: Benton

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
Other	Monitoring	Resolved	2010-07-01
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31
MR	Monitoring	Resolved	2008-01-01 → 2010-12-31

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.

Contaminant	Level vs EPA limit	Detection rate	Source	Period
Lead	0.0010 mg/L 6.7% of the EPA limit 0.0150 mg/L	9/9	LCR	2025
Nitrate	1100 µg/L 11% of the EPA limit 10000 µg/L	6/16	SYR4	2013–2019
1,2,4-Trichlorobenzene	0.0849 µg/L 0.1% of the EPA limit 70 µg/L	1/2	SYR4	2013–2019
Barium	56 µg/L 2.8% of the EPA limit 2000 µg/L	1/1	SYR4	2016
Copper	5.3 µg/L 0.4% of the EPA limit 1300 µg/L	1/1	SYR4	2016
Fluoride	743 µg/L 19% of the EPA limit 4000 µg/L	1/1	SYR4	2016
P-Dichlorobenzene	0.0491 µg/L 0.1% of the EPA limit 75 µg/L	1/2	SYR4	2013–2019

37 contaminants tested, none detected

1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-DichloropropaneAntimony, TotalArsenicBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformChromiumDichloromethaneDibromochloromethaneEthylene DibromideEthylbenzeneLeadMercuryNitrate-NitriteNitriteSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact: Rolly Fuller

Frequently asked questions about Mount Adams Vista Water

Is Mount Adams Vista Water tap water safe to drink?

EPA monitoring detected 7 contaminants in Mount Adams Vista Water'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 Mount Adams Vista Water's water?

EPA monitoring detected Lead, Nitrate, 1,2,4-Trichlorobenzene, Barium, Copper, and others. The full list with the level and data source for each is above.

How many people does Mount Adams Vista Water serve?

Mount Adams Vista Water reports serving 34 people in Washington, per its EPA record.

Has Mount Adams Vista Water had any water quality violations?

The EPA has 24 violations on file for Mount Adams Vista Water, 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.