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ZIP Code 21811 Water Quality
Maryland · 24,086 people served · 11 water systems
C
FairZIP code 21811 is in Maryland and is a small city from a drinking-water-service perspective, with 24,086 people served by 11 EPA-registered public water systems. It overlaps with 2 communities including BERLIN, OCEAN PINES.
Within ZIP code 21811, the EPA Safe Drinking Water Information System (SDWIS) records 4 health-based violations during the past five years across 11 water systems serving this postal area. The grade of C reflects the aggregate compliance pattern, not the current daily water quality.
Last updated: 2026-05-18 · Source: EPA SDWIS
ZIP Code Location
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Cities in ZIP 21811
Water Systems Serving 21811
NANTUCKET POINT(DISTRIBUTION-DELAWARE)
PWSID: MD0230020
500 served
NEWARK
PWSID: MD0230002
325 served
MYSTIC HARBOUR
PWSID: MD0230011
5,945 served
BRIDDLETOWN DISTRIBUTION SYSTEM
PWSID: MD0230015
150 served
RIDDLE FARM
PWSID: MD0230019
500 served
BEST RENTAL HOUSING, INC.
PWSID: MD0220012
68 served
TOWN OF BERLIN
PWSID: MD0230001
4,500 served
ST. MARTINS BY THE BAY
PWSID: MD0230008
120 served
OCEAN PINES
PWSID: MD0230005
11,890 served
SUNSET LAKES LLC
PWSID: MD0230220
48 served
PIN OAK APARTMENTS
PWSID: MD0230217
40 served
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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