99320
West Richland, WA
Benton County · Kennewick-Richland, WA metro area
BENTON CITY WATER

Is tap water in Hanford Site CCD (99320) safe to drink?

Higher concern
Last tested: November 2023
Source: Official EPA UCMR5 federal monitoring data. Last tested November 2023.
City:
Townships:
  • Hanford Site CCD, WA
  • Richland-Kennewick CCD, WA
  • Benton City CCD, WA
  • Northwest Benton CCD, WA

The short answer for Hanford Site CCD (99320)

West Richland tap water has 8 contaminants above EPA guidelines, including PFHxS at 3.6× the limit (tested November 2023). See the full compound-by-compound breakdown and filter recommendations.

The health risk for West Richland

PFAS ('forever chemicals') have been detected above EPA limits in this water system's most recent tests. These synthetic chemicals do not break down in the body and are linked to a range of health effects. A certified filter is strongly recommended.
  • PFBS, PFHxS, PFOS, PFPeA above limit.
PFHxS concentration (µg/L) November 2023
0 µg/L 0.004 µg/L 0.02 µg/L
0.014 µg/L
Detected
µg/L
0.004 µg/L
EPA limit
guideline
258% above limit
Comparison
vs. guideline
EPA limit: 0.004 µg/L | Your water: 0.014 µg/L
Certified Filters for West Richland Tap Water

PFHxS (a PFAS 'forever chemical') was detected above EPA limits. These filters are independently certified to reduce common drinking-water contaminants.

Water filter recommendation for West Richland tap water: Epic Pure XP Water Filter Pitcher
Pitcher filter
Epic Pure XP Water Filter Pitcher
NSF-certified dual-layer filtration reduces 70+ contaminants including PFAS, lead, chlorine, microplastics, and bacteria.
NSF/ANSI 42, 53, 401 & P473Removes 99.99% PFASMade in USABPA-free
Best for renters or quick setup. No installation needed.
Get the Epic Pure XP →
Most elevated compounds
Compound Measurement EPA Limit Comparison
PFHxS
Tested: November 2023 · Wastewater Treatment Plant		 0.014 µg/L 0.004 µg/L 258% above limit
PFHxS
Tested: November 2023 · 1502 Kendall Sample Station		 0.012 µg/L 0.004 µg/L 210% above limit
PFOS
Tested: November 2023 · Wastewater Treatment Plant		 0.009 µg/L 0.004 µg/L 117% above limit
PFOS
Tested: November 2023 · 1502 Kendall Sample Station		 0.008 µg/L 0.004 µg/L 102% above limit
PFPeA
Tested: November 2023 · Wastewater Treatment Plant		 0.005 µg/L 0.003 µg/L 77% above limit
View all tested compounds

1502 Kendall Sample Station · Tested: November 2023

Compound Measurement EPA Limit Comparison
PFHxS 0.012 µg/L 0.004 µg/L 210% above limit
PFOS 0.008 µg/L 0.004 µg/L 102% above limit
PFPeA 0.005 µg/L 0.003 µg/L 63% above limit
PFBS 0.004 µg/L 0.003 µg/L 23% above limit
PFHxA 0.004 µg/L 3 µg/L 0.1% of limit
lithium <9.000 µg/L 10 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Wastewater Treatment Plant · Tested: November 2023

Compound Measurement EPA Limit Comparison
PFHxS 0.014 µg/L 0.004 µg/L 258% above limit
PFOS 0.009 µg/L 0.004 µg/L 117% above limit
PFPeA 0.005 µg/L 0.003 µg/L 77% above limit
PFBS 0.004 µg/L 0.003 µg/L 50% above limit
PFHxA 0.005 µg/L 3 µg/L 0.2% of limit
lithium <9.000 µg/L 10 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Booster Station · Tested: November 2023

Compound Measurement EPA Limit Comparison
lithium <9.000 µg/L 10 µg/L Below limit
PFHxS <0.003 µg/L 0.004 µg/L Below limit
HFPO-DA <0.005 µg/L 0.01 µg/L Below limit
PFNA <0.004 µg/L 0.01 µg/L Below limit
PFHxA <0.003 µg/L 3 µg/L Below limit
PFBA <0.005 µg/L 6 µg/L Below limit
11Cl-PF3OUdS <0.005 µg/L 0.005 µg/L Below limit
4:2 FTS <0.003 µg/L 0.003 µg/L Below limit
6:2 FTS <0.005 µg/L 0.005 µg/L Below limit
8:2 FTS <0.005 µg/L 0.005 µg/L Below limit
9Cl-PF3ONS <0.002 µg/L 0.002 µg/L Below limit
ADONA <0.003 µg/L 0.003 µg/L Below limit
PFBS <0.003 µg/L 0.003 µg/L Below limit
PFDA <0.003 µg/L 0.003 µg/L Below limit
PFDoA <0.003 µg/L 0.003 µg/L Below limit
PFHpA <0.003 µg/L 0.003 µg/L Below limit
PFHpS <0.003 µg/L 0.003 µg/L Below limit
PFOA <0.004 µg/L 0.004 µg/L Below limit
PFOS <0.004 µg/L 0.004 µg/L Below limit
PFPeA <0.003 µg/L 0.003 µg/L Below limit
PFTrDA <0.007 µg/L 0.007 µg/L Below limit
PFUnA <0.002 µg/L 0.002 µg/L Below limit

Water utilities serving ZIP 99320

Service area boundaries are approximate and based on state filings or modeled estimates. Contact your utility to confirm exact service at a specific address.

Modeled boundaries are shown with a dashed outline.

Frequently Asked Questions about ZIP 99320 Tap Water

What contaminants are above EPA limits in ZIP 99320?

ZIP 99320 has 8 contaminants above EPA health guidelines in the latest available data, including PFHxS at 3.6x the EPA guideline. The full table on this page lists every tested compound and its measured level.

Will boiling ZIP 99320 tap water remove PFHxS?

No. Boiling does not remove PFAS, and the compounds can actually become more concentrated as water evaporates. To reduce PFAS at home, use a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis).

Do basic pitcher filters remove PFHxS?

Most basic pitcher filters are only certified to NSF/ANSI 42 or 53, which do not cover PFAS. Look for a filter independently certified to NSF/ANSI P473 (activated-carbon pitcher or under-sink) or NSF/ANSI 58 (reverse osmosis) on the spec sheet.

Who provides tap water in ZIP 99320?

Public records identify BENTON CITY WATER as a primary water system associated with ZIP 99320. Service boundaries can vary by address, so confirm exact service with the utility.

When was ZIP 99320 tap water last tested?

The most recent test date used in this report is November 2023. EnviroClarity last refreshed this page on 2026-05-04.

Where can I find the official water quality report for ZIP 99320?

Every U.S. public water system is required to publish an annual Consumer Confidence Report (CCR). Contact BENTON CITY WATER or visit their website for the latest official report covering ZIP 99320. The EPA also maintains a national CCR locator.

Primary source EPA UCMR5 (2023-2025)
Guideline source EPA drinking water standard (PFHxS: 0,004 µg/L)
Last tested November 2023
Last page update 2026-05-04

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    Data reflects publicly reported utility records from EPA datasets and local utility disclosures. This information is educational and not medical advice.

    Protect your water in West Richland → see certified filters