New York State Department of Health
Community Health Indicator Reports — Latest Data
County values, counts, denominators, reporting periods, and source descriptions used by the standardized comparison system.
Open official source ↗Founding edition · 2026
Public Health Atlas · Environmental health
Public drinking water
Public-water-system sources, selected monitoring records, compliance context, and links to consumer confidence reports.
Read the geography and period first
Water-system boundaries do not follow ZIP or county lines. Source-water results may not represent treated water delivered to a tap.
Dedicated page, limited comparison data
This page is intentionally system-first rather than ranking counties using mismatched water-service geography.
Public drinking-water systemsCounty summary marker · Active EPA-regulated public water systems
Community comparison
Active public water systems serving each county
These counts include community and non-community systems. They describe the regulated-system directory—not contaminant levels, violations, or health risk.
Selected measure
Active public water systems serving each county
Active systems in EPA ECHO's July 2026 SDWA extract. Every row retains its own reporting period.
Erie CountyJuly 2026
107Niagara CountyJuly 2026
21EPA's ZIP_CODES_SERVED field is blank for all 128 active systems in this extract, so ZIP shading and state/national count comparisons are not shown.
Optional environmental context
Open the documentary record without implying causation.
Health statistics and environmental history remain separate by default. These links preserve that distinction while making related records easy to inspect.
Main environmental mapIndustry, cleanup sites, landfills, PFAS, and documented waste locations →Radiological legacyFUSRAP, LOOW, Linde, uranium-processing history, and survey records →Changed waterways and fillFilled wetlands, altered channels, shoreline expansion, and aerial evidence →Documented airborne risksOfficial plumes, dates, geographic limits, and source records →
Methodology and sources
Every value keeps its source period and geography.
This page is intentionally system-first rather than ranking counties using mismatched water-service geography.
New York State Department of Health
Community Health Indicator Reports dashboard
Official visualization, definitions, and interpretation context.
Open official source ↗New York State Department of Health
Prevention Agenda subcounty data
Official ZIP and other subcounty records where the source supports local geography.
Open official source ↗New York State Department of Health
New York State Opioid Data Dashboard
Separate annual and provisional opioid surveillance; not silently merged with CHIRS periods.
Open official source ↗