Tap WaterIndex

← Washington

Tap water quality report

Olympic Trails Water Supply

EPA monitoring tested this supplier for 56 contaminants and detected 6. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

56
contaminants tested
6
detected
44
people served
5
health-based violations
Washington rankingsLead in WashingtonPFAS in Washington
Water source
Ground water
Ownership
Private
Counties served
Mason

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
18
violations on file
0
still open
ViolationTypeStatusPeriod
TT Health-based Resolved 2020-07-01
TT Health-based Resolved 2020-03-02
MCL Health-based Archived 2007-09-01 → 2007-09-30
MCL Health-based Archived 2005-07-01 → 2005-07-31
MCL Health-based Archived 1994-09-01 → 1994-09-30
MR Monitoring Resolved 2023-01-01 → 2023-12-31
MR Monitoring Resolved 2019-01-01 → 2021-12-31
MR Monitoring Resolved 2019-01-01 → 2021-12-31
MR Monitoring Archived 2006-01-01 → 2006-01-31
MR Monitoring Archived 2005-08-01 → 2005-08-31

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
640 µg/L 6.4%
of the EPA limit 10000 µg/L
 16/16 SYR4 2013–2019
Lead
0.0225 mg/L 150%
above the EPA limit of 0.0150 mg/L
 4/4 LCR 2017
Nitrate-Nitrite
594 µg/L 5.9%
of the EPA limit 10000 µg/L
worst single sample: 600 µg/L
2/2 SYR4 2013–2016
Copper
1 µg/L 0.1%
of the EPA limit 1300 µg/L
 1/2 SYR4 2013–2016
Chromium
3 µg/L 3%
of the EPA limit 100 µg/L
 1/2 SYR4 2013–2016
Lead
3 µg/L 20%
of the EPA limit 15 µg/L
 1/2 SYR4 2013–2016
50 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, TotalArsenicBariumBenzeneBeryllium, TotalBromodichloromethaneBromoformChlorobenzeneCyanideCadmiumCarbon TetrachlorideChloroformDichloromethaneDalaponDibromoacetic AcidDibromochloromethaneDichloroacetic AcidDinosebEthylene DibromideEthylbenzeneFluorideMercuryMonobromoacetic AcidMonochloroacetic AcidNitritePentachlorophenolPicloramSeleniumStyreneTetrachloroethyleneThallium, TotalTolueneTotal Haloacetic Acids (HAA5)Trichloroacetic AcidTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
Kevin Odegard

Frequently asked questions about Olympic Trails Water Supply

Is Olympic Trails Water Supply tap water safe to drink?

EPA monitoring detected 6 contaminants in Olympic Trails Water Supply'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 Olympic Trails Water Supply's water?

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

How many people does Olympic Trails Water Supply serve?

Olympic Trails Water Supply reports serving 44 people in Washington, per its EPA record.

Has Olympic Trails Water Supply had any water quality violations?

The EPA has 18 violations on file for Olympic Trails Water Supply, 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.