Renton
WA

Is Renton, WA Tap Water Safe to Drink?

Renton, WA tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Contaminants including lithium have been detected at or below guideline thresholds.

4Water systems
4ZIP codes
0%ZIPs above EPA guideline
Metro areaSeattle-Tacoma-Bellevue, WA
Latest data2025-11-13

Where Does Renton Get Its Water?

Water in Renton, WA is provided by 4 public water systems: RENTON CITY OF, CEDAR RIVER WATER & SEWER DISTRICT, COAL CREEK UTILITY DISTRICT and SOOS CREEK WATER & SEWER DISTRICT.

How Is Renton Tap Water Treated?

Treated water is disinfected using chloramines and free chlorine and ozone. Treatment includes conventional treatment (coagulation, flocculation, and filtration), granular activated carbon filtration and groundwater disinfection.

What's in Renton Tap Water?

The following contaminants were detected most frequently in Renton public water systems. All detected levels fall at or below EPA health guidelines in this dataset.

ContaminantPeak detectedEPA guidelineZIPs detectedStatus
lithium 9 µg/L — 0 ZIPs Within guideline
PFTrDA 0.007 µg/L — 0 ZIPs Within guideline
11Cl-PF3OUdS 0.005 µg/L — 0 ZIPs Within guideline
HFPO-DA 0.005 µg/L — 0 ZIPs Within guideline
PFBA 0.005 µg/L — 0 ZIPs Within guideline

Health Risk Profile for Renton

Current EPA monitoring data for Renton shows contaminant levels within guideline thresholds across all ZIP codes in this dataset. As with all public water systems, sensitive populations may choose to use a certified filter for additional peace of mind.

Best Broad-Spectrum Filters for This Water Profile

This city profile includes PFAS detections, chlorine disinfection, and other dissolved contaminants. Reverse osmosis (RO) systems certified under NSF/ANSI 58 provide broad reduction coverage; for PFAS specifically, confirm NSF/ANSI P473 or equivalent PFAS reduction certification.

Waterdrop G3P600 Reverse Osmosis System
Under-sink RO system

8-stage tankless RO system certified to NSF/ANSI 58, reduces 1,000+ contaminants including PFAS, lead, arsenic, fluoride, and nitrates.

See recommendations matched to your exact address: choose your ZIP code below.

Frequently Asked Questions about Renton Tap Water

Is Renton tap water safe to drink?

Renton tap water currently meets EPA health guidelines across all monitored ZIP codes in this dataset. Sensitive populations may still choose to use a certified filter as a precaution.

What contaminants are in Renton tap water?

The most commonly detected contaminants in Renton water systems include: lithium, PFTrDA, 11Cl-PF3OUdS. See the ZIP-level reports for exact measurements and EPA guideline comparisons.

Where does Renton get its drinking water?

Renton receives water from 4 public water systems, including RENTON CITY OF.

Do I need a water filter in Renton?

Current data does not show guideline exceedances in Renton. A certified filter can still reduce trace contaminants and improve taste for households that prefer filtered water.

How often is Renton tap water tested?

Public water systems in Renton are required by the EPA to test for regulated contaminants on schedules ranging from daily (for microbials and disinfectants) to annual or triennial (for many chemical contaminants). Results are published in annual Consumer Confidence Reports (CCRs). The data on this page reflects the most recent available EPA monitoring results, with the latest sample date of 2025-11-13.

Tap water reports by ZIP in Renton

Water utilities serving Renton, WA

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.

Also covers / overlaps with