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ZIP Code 19940 Water Quality
Delaware · 2,027 people served · 1 water systems
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ExcellentZIP code 19940 is in Delaware and is a small town from a drinking-water-service perspective, with 2,027 people served by 1 EPA-registered public water systems. It corresponds to DELMAR.
Within ZIP code 19940, the EPA Safe Drinking Water Information System (SDWIS) records no health-based Maximum Contaminant Level (MCL) exceedances during the past five years across the 1 water system serving this postal area.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 19940
Water Systems Serving 19940
About ZIP-code water data
Postal-code level water quality data is built up from the underlying water systems — multiple ZIPs may share a single utility, and a single ZIP can span multiple utilities. For property-level information, contact the specific utility serving your address. EPA data on this page was last refreshed on 2026-05-18.
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