ZIP Code 98606
Clark County, Washington — Brush Prairie
What This Means
Clark County, Washington has naturally soft water, estimated at 56.7 mg/L (PPM). Soft water is generally good for appliances and plumbing — it produces less scale buildup. You likely don't need a water softener. Soft water may feel slightly "slippery" and lathers soap easily.
What You Should Do
Hardness Details
| ZIP Code | 98606 |
| County | Clark |
| City | Brush Prairie |
| State | Washington (WA) |
| Hardness (PPM) | 56.7 mg/L — Soft |
| Hardness (GPG) | 3.3 grains/gallon |
| Classification | 0 - 60 mg/L |
Source: USGS Water Quality Portal, county-level median
USGS Monitoring Data
| Monitoring Stations | 138 |
| Range | 3.2 – 280 mg/L |
| Most Recent Data | 2024 |
| Data Quality | Measured |
Source: USGS Water Quality Portal
Effects at 56.7 PPM Hardness
At 56.7 ppm, your water is soft. You are unlikely to notice mineral effects on skin, hair, or appliances. Soap lathers easily, dishes come out spot-free, and your water heater and plumbing will not accumulate scale buildup.
Is Brush Prairie Water Safe to Drink?
Yes. Hard water at 56.7 ppm in Brush Prairie is safe to drink. The calcium and magnesium that make water hard are actually essential minerals your body needs daily. The World Health Organization confirms there are no health-based guidelines for water hardness.
At this level, taste is generally good. Most people will not notice a mineral flavor, and the water is perfectly suitable for drinking, cooking, and making coffee or tea.
Your Water vs National Average
Brush Prairie water at 56.7 ppm is 43% softer than the US average of approximately 100 ppm. Your area benefits from naturally soft water, which is gentler on plumbing, appliances, skin, and hair than what most Americans experience.
Best Solution for 56.7 PPM Water
No softener needed. Your soft water at 56.7 ppm is ideal for skin, hair, and appliances. You are in the fortunate minority of US homes that do not need water treatment for hardness. Enjoy the benefits of naturally soft water: easy soap lathering, spot-free dishes, and long-lasting appliances.
Clark County Water Hardness Map
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Frequently Asked Questions
What is the water hardness for ZIP code 98606?
ZIP code 98606 is in Clark County, Washington, with estimated water hardness of 56.7 mg/L (3.3 GPG), classified as soft.
Do I need a water softener in 98606?
With soft water at 56.7 PPM, a water softener is generally not needed.
What county is ZIP code 98606 in?
ZIP code 98606 is in Clark County, Washington (WA).
Is Brush Prairie water hard or soft?
Brush Prairie water is classified as soft with an estimated hardness of 56.7 ppm (3.3 GPG). This is soft water — no treatment is needed.
Is hard water in 98606 safe to drink?
Yes, hard water in ZIP code 98606 at 56.7 ppm is safe to drink. The calcium and magnesium minerals are actually beneficial for your health. At this level, the water tastes normal and requires no filtration for drinking purposes.
Will 56.7 PPM water damage my appliances?
At 56.7 ppm (soft), your water will not cause mineral damage to appliances. You can expect full lifespan from your water heater, dishwasher, and plumbing.
Do I need a water softener in Clark County?
No — Clark County has soft water at 56.7 ppm. A water softener is not necessary.
Is Brush Prairie water OK for aquariums and plants?
Yes — soft water at 56.7 ppm is ideal for most tropical fish (bettas, tetras, discus) and acid-loving plants. African cichlids may need mineral supplements.