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Questions, feedback, or partnership inquiries — we'd love to hear from you.
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WaterByCounty is part of the ByCounty Network, a data platform providing free county-level statistics from official government sources. We welcome questions about our water quality data, suggestions for improvement, and partnership opportunities.
ByCounty Network
Part of a family of county-data sites including TaxByCounty, CountyScore, and more.
Data Source
All water quality data on WaterByCounty comes from the EPA Safe Drinking Water Information System (SDWIS). Data includes violation counts, contaminants, and system compliance by county. For questions about the underlying data, visit EPA SDWIS.