EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records
PUBLIC WATER SYSTEM RECORDPWSID MA4096001

Massachusetts · Ground water

Otis Air National Guard Base

EPA’s September 2026 export lists Otis Air National Guard Base (PWSID MA4096001) as Current health-based flag, serving a reported 6,000 people from a ground water source, with 1 rules in current violation.

Source: EPA SDWIS system-search export · Snapshot 13 Sep 2026 · Federal compliance fields

CURRENT EXPORTCurrent health-based flagEPA's export includes a current health-based violation flag.
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01 / CURRENT FLAGS

EPA compliance flags for Otis Air National Guard Base

Otis Air National Guard Base is listed as current health-based flag in the current export; the five federal flag categories remain separate below.

  • FLAGGED
    Health-based violationCurrent HEALTH_FLAG in the EPA export.
  • NOT FLAGGED
    Monitoring and reportingCurrent MR_FLAG in the EPA export.
  • NOT FLAGGED
    Public notificationCurrent PN_FLAG in the EPA export.
  • NOT FLAGGED
    Other violationCurrent OTHER_FLAG in the EPA export.
  • NOT FLAGGED
    Serious violatorCurrent serious-violator status in the EPA export.
Important limit

This page is not a household water test. A clear federal flag does not prove every home has safe water, and a flag is not a measurement at your faucet. Plumbing, service lines, local sampling, private wells, and newer events may not be reflected here.

02 / VIOLATION RECORD

Quarters with violations7rolling history field
Quarters with SNC0significant noncompliance
Rules in current violation1EPA export count
Rules in 3-year window1EPA export count

Current rule entries for Otis Air National Guard Base

EPA supplied 1 current contaminant, rule, or violation-category entries for Otis Air National Guard Base in the exported fields used here.

  • 5200=LEAD AND COPPER RULE REVISIONS

Three-year entries for Otis Air National Guard Base

EPA supplied 1 contaminant or rule entries for Otis Air National Guard Base in the three-year history field.

  • 5200=LEAD AND COPPER RULE REVISIONS

03 / OVERSIGHT & COVERAGE

Visits and sanitary surveys for Otis Air National Guard Base

The export lists 5 site visits in five years and 2 significant deficiencies for Otis Air National Guard Base.

Site visits, past 5 years
5
Inspection visits
0
Other visits
5
Last sanitary survey
05/06/2025
Last recorded visit
05/06/2025
Significant deficiencies
2

Places served by Otis Air National Guard Base

EPA associates Otis Air National Guard Base with the listed cities, counties, ZIP codes, and Massachusetts service area identifiers.

State / territory
Massachusetts
Cities
FALMOUTH
Counties
Barnstable
ZIP codes
02542
Federal PWSID
MA4096001
Registry ID
110064794655

04 / HOW TO USE THIS RECORD

Current public records for Otis Air National Guard Base

EPA’s facility report, the Massachusetts drinking-water program, and Otis Air National Guard Base’s Consumer Confidence Report are the current public records beyond this September 2026 snapshot.

Confirm current conditions with the utility's latest Consumer Confidence Report, your state drinking-water program, and the EPA facility report. For household concerns, ask a qualified local laboratory about tap testing.

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