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Water Hardness in 98230

Blaine, Washington · Whatcom County

27 PPM
1.6 GPG
Soft
0Soft60120180300+
Verified — Annual Water Quality Report

Dataset updated March 9, 2026Matched to 12 water systemsTap readings can vary by utility zone, treatment, and plumbing. Methodology

Source context

How this ZIP reading is built

This ZIP reading is built from 12 matched water systems. When more than one system is matched, the displayed value is weighted toward larger known service populations when that data is available.

Source basis
9 verified treated-water sources
12 matched systems total for this ZIP; treated-water reports are prioritized when available.
Water source profile
Primarily surface water
Surface-water hardness can shift with reservoirs, runoff, season, and treatment. This profile is weighted by known population served across matched systems.
Data recency
March 9, 2026
Dataset rebuilt March 9, 2026; individual utility reporting years can vary.

Hardness is a mineral-content reading, not a drinking-water safety rating. Use it for scale, appliance, and softener decisions; check your utility report or test your tap before sizing treatment equipment. See how we calculate local readings.

Water Systems Serving 98230

These are the systems matched to this ZIP code. The displayed ZIP value is weighted toward larger known service populations when population data is available.

12 water systems
PWSID is the public water system identifier. Data Source shows whether the hardness value comes from a treated-water report, USGS monitoring, or a local estimate; source year is shown when available.
Bellingham-Water Division City Of
WA5305600
Soft
24 PPMsurface water139,912 servedVerified — Annual Water Quality Report
Source water: 103 PPM
Ferndale
WA5324850
Soft
24 PPMgroundwater19,305 servedVerified — Annual Water Quality Report
Source water: 152 PPM
Lynden Water Department
WA5349150
Soft
24 PPMsurface water17,969 servedVerified — Annual Water Quality Report
Source water: 99 PPM
Lwwsd - South Shore Water System
WA5395910
Soft
24 PPMsurface water10,028 servedVerified — Annual Water Quality Report
Source water: 103 PPM
Birch Bay Water & Sewer District
WA5395904
Slightly Hard
69 PPMgroundwater9,019 servedHigh Confidence — USGS Monitoring
Showing the first 5 systems. Expand to review all matched systems.

Nearby Zip Codes

9824025982482698264299822524982622498226249828124982472698245100982792298297229828022

What This Means For You

Recommendations are based on the displayed ZIP hardness reading. Confirm your tap reading before sizing or buying treatment equipment.

Your Water Is Soft

Your water hardness is in the soft range. You likely don't need a water softener. Enjoy your naturally soft water!

Know your water hardness?

If you've tested your water or have your utility's CCR report, share your reading to help us improve accuracy for Blaine, WA (98230).

Submit Your Data

Frequently Asked Questions

Is the water hard in Blaine, WA (98230)?

The average water hardness in 98230 is 27 PPM (1.6 GPG), which is classified as soft.

Do I need a water softener in 98230?

At 27 PPM, your water is relatively soft. A water softener is generally not necessary.

Is hard water in 98230 safe to drink?

Water hardness itself is a mineral-content reading, not a drinking-water safety rating. Calcium and magnesium are naturally occurring minerals, but you should check your utility's Consumer Confidence Report for contaminant and compliance information.

How many water systems serve 98230?

Zip code 98230 in Blaine, Washington is served by 12 water systems.

Learn More About Your Water

Water Hardness Scale: PPM and GPG Chart

Use the USGS water hardness scale to compare PPM, GPG, and mg/L levels from soft to very hard water.

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How to Test Water Hardness at Home

Compare free lookups, soap tests, test strips, liquid drop kits, and lab tests for measuring water hardness.

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