Our Methodology

At Town Water Check, we're committed to providing accurate, up-to-date information about tap water quality across the United States. Here's how we collect, analyze, and present our data:

Data Sources

We compile water quality information from multiple reliable sources:

  • Public water system Consumer Confidence Reports (CCRs)
  • EPA's Safe Drinking Water Information System (SDWIS)
  • State environmental and health department databases
  • Independent testing and research organizations
  • Academic research studies

Analysis Process

Our team of scientists and data specialists:

  • Collect and standardize data from diverse sources
  • Compare contaminant levels to EPA standards and health guidelines
  • Assess overall water quality based on multiple parameters
  • Identify trends and potential concerns
  • Develop tailored recommendations based on specific water profiles

Transparency

We are committed to transparency in our methodology:

  • We clearly cite our data sources
  • We explain our rating system and how we evaluate water quality
  • We acknowledge data limitations and uncertainties
  • We regularly update our information as new data becomes available
  • We maintain independence from water treatment companies and other commercial interests

Our goal is to provide information that is both scientifically sound and practically useful for everyday decisions about tap water. We're grading the water, not the water companies that handle it. They've been thrown into a very difficult situation, not of their making. Who knew until recently that PPT (parts per trillion)-level contaminants, previously thought to be negligible, could be so harmful? Nobody, until recent times. Complex hydraulic infrastructure cannot be changed overnight. However, consumers can add a relatively low-cost tap water home filtration system in the meantime. Our municipality-level reports can help you with this process.

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