Moses Lake
WA

Is Moses Lake, WA Tap Water Safe to Drink?

Moses Lake tap water meets federal Safe Drinking Water Act standards but 1 of 1 ZIP code show detections above EPA health guidelines, primarily for lithium. A certified filter is recommended for households that want an additional layer of protection.

1Water system
1ZIP codes
100%ZIPs above EPA guideline
Metro areaMoses Lake, WA
Latest data2025-01-16

Where Does Moses Lake Get Its Water?

Water in Moses Lake, WA is provided by 1 public water system: MOSES LAKE CITY OF.

How Is Moses Lake Tap Water Treated?

Treated water is disinfected using free chlorine. Treatment includes groundwater disinfection.

What's in Moses Lake Tap Water?

The following contaminants were detected most frequently in Moses Lake public water systems. 1 of 1 ZIP codes showed detections above EPA health guidelines.

ContaminantPeak detectedEPA guidelineZIPs detectedStatus
lithium 35.6 µg/L 10 µg/L 1 ZIP Above guideline
PFTrDA 0.007 µg/L — 0 ZIPs Within guideline
HFPO-DA 0.005 µg/L — 0 ZIPs Within guideline
11Cl-PF3OUdS 0.005 µg/L — 0 ZIPs Within guideline
PFBA 0.005 µg/L — 0 ZIPs Within guideline

Health Risk Profile for Moses Lake

Based on EPA monitoring data, 1 of 1 ZIP codes in Moses Lake have recorded detections above EPA health guidelines. Sensitive populations such as infants, pregnant individuals, and those with weakened immune systems may benefit from an additional layer of protection such as a certified point-of-use filter.

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 Moses Lake Tap Water

Is Moses Lake tap water safe to drink?

Moses Lake tap water meets Safe Drinking Water Act requirements but 1 of 1 ZIP codes show contaminant levels above EPA health-based guidelines. A certified point-of-use filter adds an extra layer of protection.

What contaminants are in Moses Lake tap water?

The most commonly detected contaminants in Moses Lake water systems include: lithium, PFTrDA, HFPO-DA. See the ZIP-level reports for exact measurements and EPA guideline comparisons.

Where does Moses Lake get its drinking water?

Moses Lake receives water from one public water system, including MOSES LAKE CITY OF.

Do I need a water filter in Moses Lake?

If your ZIP code is among those with detections above EPA health guidelines, choose a filter certified for the specific contaminants shown in your ZIP report. Reverse osmosis is generally the broadest option for PFAS, lithium, and many other dissolved contaminants.

How often is Moses Lake tap water tested?

Public water systems in Moses Lake 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 2025-01-16.

Tap water reports by ZIP in Moses Lake

Water utilities serving Moses Lake, 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