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Sammamish Plateau Water & Sewer water quality

EPA test results and violation history for Sammamish Plateau Water & Sewer in Washington. Public water system ID WA5340900. Serves ZIP codes 98029, 98053, 98074, 98075.

NDmax PFOA, ppt (limit 4)
11.1max PFOS, ppt (limit 4)
6of 29 PFAS detected
—lead, ppb (90th percentile)

ND = not detected. PFAS from EPA UCMR 5 (2023–2025); lead and violations from EPA SDWIS.

What EPA records show for Sammamish Plateau Water & Sewer

  • PFAS above EPA's limit (11.1 ppt)Highest PFOA 0 ppt, PFOS 11.1 ppt in EPA UCMR 5 testing. EPA's limit is 4 ppt each.

Reverse osmosis is the right fit for your water

Your utility's PFAS results exceed EPA's 4 ppt limit. Reverse osmosis is the most effective home option for PFAS and also handles lead, nitrate and arsenic.

Best match for your water

iSpring RCC7AK Under-Sink Reverse Osmosis System

Under-sink reverse osmosis · $$
  • Good for: PFAS, nitrate, arsenic, fluoride, radium, lead and most other dissolved contaminants
  • Install: Under the kitchen sink, about an hour with basic tools
  • Manufacturer lists NSF/ANSI 58 testing. Reverse osmosis is the treatment EPA names as most effective for PFAS.
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Other good options

Bluevua RO100ROPOT Countertop Reverse Osmosis

Countertop reverse osmosis · $$$
  • Good for: PFAS, nitrate, arsenic and lead without touching the plumbing
  • Install: No install; sits on the counter. Good for renters
  • Manufacturer lists WQA certification to NSF/ANSI 58.
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ZeroWater 10-Cup Pitcher

Pitcher · $
  • Good for: A low-cost first step for PFOA/PFOS and lead
  • Install: None
  • Manufacturer lists IAPMO certification for lead, chromium and PFOA/PFOS reduction.
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As an Amazon Associate we earn from qualifying purchases. Data comes from EPA public records, which cover your utility, not your home's own pipes.

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Questions

Does Sammamish Plateau Water & Sewer water have PFAS?

Yes. EPA UCMR 5 testing detected PFBS, PFHxA, PFHxS, PFOS, PFPeA, PFPeS. The highest PFOA result was 0 ppt and the highest PFOS result was 11.1 ppt, against an EPA limit of 4 ppt each.

Is Sammamish Plateau Water & Sewer tap water safe to drink?

Its PFAS levels are above EPA's new limit, which utilities must meet by the end of the decade. Lead from home plumbing isn't captured by utility data, so a certified filter is worthwhile in older homes.

What water filter should I use in Sammamish Plateau Water & Sewer's service area?

Reverse osmosis is the right fit for your water. Your utility's PFAS results exceed EPA's 4 ppt limit. Reverse osmosis is the most effective home option for PFAS and also handles lead, nitrate and arsenic.

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