What is a water quality score?

A water quality score is a single number (typically 0–100) that represents the overall quality of a water sample. AquaReport's AquaScore™ grades water as Gold (80–100), Silver (60–79), Bronze (40–59), or At Risk (0–39) based on EPA legal limits, health guidelines, and contaminant detection.

How does AquaScore calculate water quality?

AquaScore starts at 100 and deducts points based on three factors: legal limit violations (heaviest penalty), health guideline violations (moderate penalty), and contaminant detection above ideal levels (light penalty). It also factors in field readings like pH, hardness, TDS, and chlorine.

Water Quality Scoring Systems: How to Grade Water for Customers

How water quality scoring systems work, why they help dealers sell, and how AquaReport's AquaScore algorithm grades residential water.

By Jacob Lightsey. Published 2026-05-08. Updated 2026-05-22. Category: Features.

Frequently Asked Questions

What is a water quality score?: A water quality score is a single number (typically 0–100) that represents the overall quality of a water sample. AquaReport's AquaScore™ grades water as Gold (80–100), Silver (60–79), Bronze (40–59), or At Risk (0–39) based on EPA legal limits, health guidelines, and contaminant detection.
How does AquaScore calculate water quality?: AquaScore starts at 100 and deducts points based on three factors: legal limit violations (heaviest penalty), health guideline violations (moderate penalty), and contaminant detection above ideal levels (light penalty). It also factors in field readings like pH, hardness, TDS, and chlorine.

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