- EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
- PFOS (a PFAS): found in 16 of 20 samples, average 8.8 ppt, highest 18.6 ppt (EPA UCMR 5 testing, May 2023–May 2024) PFOA or PFOS averaged above 4.0 ppt in UCMR 5 testing
- PFHxS (a PFAS): found in 16 of 20 samples, average 3.8 ppt, highest 6.6 ppt (EPA UCMR 5 testing, May 2023–May 2024)
- PFBS (a PFAS): found in 14 of 20 samples, average 3.6 ppt, highest 7.6 ppt (EPA UCMR 5 testing, May 2023–May 2024)
- PFOA (a PFAS): found in 10 of 20 samples, average 3.3 ppt, highest 11.5 ppt (EPA UCMR 5 testing, May 2023–May 2024)
- PFHxA (a PFAS): found in 8 of 20 samples, average 2.1 ppt, highest 7.3 ppt (EPA UCMR 5 testing, May 2023–May 2024)
- PFPeA (a PFAS): found in 8 of 20 samples, average 1.9 ppt, highest 7.4 ppt (EPA UCMR 5 testing, May 2023–May 2024)
- PFHpA (a PFAS): found in 1 of 20 samples, average 0.20 ppt, highest 3 ppt (EPA UCMR 5 testing, May 2023–May 2024)
- Lead, 90th percentile: 2.2 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2021–Dec 31, 2023). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
Public EPA test results
Can you drink Vancouver tap water? What EPA records show
EPA WA5391200 · serves Clark County, WA · about 373,047 people (EPA SDWIS)
This report shows EPA's federal records for this water system: UCMR 5 testing, lead testing and violations. It isn't a test of the water at your tap, and it has no Water Score.
Public EPA test results
Vancouver City of (EPA WA5391200)
EPA data as of October 14, 2026. For Vancouver's main utility, Vancouver City of: We found no health-based violations in EPA's records for this system (WA5391200) since July 1, 2021, as of October 14, 2026. This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing.
What EPA records show for Vancouver City of, as of October 14, 2026
We found no health-based violations in EPA's records for this system (WA5391200) since July 1, 2021, as of October 14, 2026.
Source: EPA ECHO record for Vancouver City of (SDWIS). Data as of October 14, 2026.
Lead, 90th percentile: 2.2 ppb at the latest result in EPA records for a monitoring period that ran on or after July 1, 2021, at or below EPA's 15 ppb action level (EPA SDWIS, monitoring period Jan 1, 2021–Dec 31, 2023). The 90th percentile is a system-wide measure from homes sampled under EPA's lead rule; it isn't a result for your home.
This water system averaged above 4.0 ppt for PFOA or PFOS in EPA's UCMR 5 testing.
EPA's UCMR 5 testing looked for 30 contaminants here and found 7.
Source: EPA records (SDWIS, UCMR 5). SDWIS: data as of Oct 14, 2026. EPA UCMR 5 data, samples through June 2026.
Your water bill names your utility.
Does Vancouver City of use chloramine?
We didn't find chloramine in Vancouver City of's EPA treatment records. That's not a complete list; your utility's annual water quality report says which disinfectant it uses.