Identify the supplier, understand the report, separate public-water data from household plumbing, then choose treatment only when the actual problem is clear.
Statewide public-water overview, utilities and treatment context.
Read the guide →Find the likely supplier and understand utility boundaries.
View utilities →How testing responsibilities and treatment decisions differ.
Compare source types →Units, benchmarks, non-detects and how to read reports.
Understand results →ZIP-based Rhode Island public-water lookup.
Check a ZIP code →Treatment-focused in-home screening and next-step guidance.
Request a test →
Start with the actual numbers, then decide what—if anything—needs attention.
Screen common treatment conditions such as hardness, iron, pH and TDS.
Use certified laboratory testing for health contaminants and required results.
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