Water Testing Guides & Knowledge Center
Free, accurate guides written by our accredited laboratory team to help Oregon homeowners, farmers, and water system operators understand water quality and testing requirements.
Home Water QualityI Have Hard Water. What Now?
Learn how hardness, calcium, and total dissolved solids differ—and how mineral-rich water can contribute to scale, leaky faucets, water-heater buildup, and recurring ice-machine problems.
Local Water NewsDetroit Dam Drawdown, Salem's Lawsuit & Santiam Canyon Water
What Salem’s federal lawsuit over the Detroit Reservoir drawdown means for North Santiam River turbidity, drinking-water treatment, and communities from Gates and Mill City to Stayton and Salem.
Start HereDo I Need to Test My Drinking Water in Oregon?
A clear answer for Oregon and Salem residents on whether you need to test your drinking water — when Oregon law requires it, how often to test a private well, and what city-water customers should check at their own tap.
Getting StartedHow to Test Your Drinking Water in Oregon
A step-by-step guide for Oregon homeowners and renters: what tests to order, how to collect samples correctly, how to submit them to an accredited lab, and how to read your results.
RegulationsOregon Well Water Testing Requirements
Oregon law (ORS 448.271) requires water testing when selling a home with a private well. Learn exactly what the Oregon Domestic Well Act requires, timelines, which tests qualify, and what to do if results are concerning.
Water QualityWhat's In Oregon Tap Water?
Oregon has some of the highest-quality source water in the nation — but that doesn't mean every tap is problem-free. Explore common contaminants found in Oregon drinking water, from arsenic and Nitrate-Nitrogen in well water to lead from older pipes.
AccreditationWhat Does ORELAP Accreditation Mean for Your Water Test?
Not all water testing is equal. Learn what ORELAP, EPA, and TNI accreditation means, why it matters for your results, and how to verify that your lab is accredited in Oregon.
Food SafetyHow Contaminated Irrigation Water Causes Outbreaks Like Cyclospora
Cyclospora and E. coli outbreaks in fresh produce frequently trace back to contaminated irrigation water. Learn the pathway from field to illness and how Oregon growers can protect their crops — and their customers — with routine irrigation water testing.
Ready to Test Your Oregon Water?
Contact Waterlab Corp — Salem's accredited water testing laboratory since 1977. Fast turnaround, expert guidance, accredited results.
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