Siasconset Water Department

EPA’s September 2026 export lists Siasconset Water Department (PWSID MA4197001) as Other current violation flag, serving a reported 3,000 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 EXPORTOther current violation flagEPA's export includes another current compliance flag.

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01 / CURRENT FLAGS

EPA compliance flags for Siasconset Water Department

Siasconset Water Department is listed as other current violation flag in the current export; the five federal flag categories remain separate below.

NOT 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.
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 violations5rolling history field

Quarters with SNC0significant noncompliance

Rules in current violation1EPA export count

Rules in 3-year window2EPA export count

Current rule entries for Siasconset Water Department

EPA supplied 1 current contaminant, rule, or violation-category entries for Siasconset Water Department in the exported fields used here.

7000=Consumer Confidence Rule

Three-year entries for Siasconset Water Department

EPA supplied 2 contaminant or rule entries for Siasconset Water Department in the three-year history field.

1040=Nitrate
7000=Consumer Confidence Rule

03 / OVERSIGHT & COVERAGE

Visits and sanitary surveys for Siasconset Water Department

The export lists 3 site visits in five years and 0 significant deficiencies for Siasconset Water Department.

Site visits, past 5 years: 3
Inspection visits: 0
Other visits: 3
Last sanitary survey: 05/07/2025
Last recorded visit: 05/07/2025
Significant deficiencies: 0

Places served by Siasconset Water Department

EPA associates Siasconset Water Department with the listed cities, counties, ZIP codes, and Massachusetts service area identifiers.

State / territory: Massachusetts
Cities: NANTUCKET
Counties: Nantucket
ZIP codes: 02564
Federal PWSID: MA4197001
Registry ID: 110013152550

04 / HOW TO USE THIS RECORD

Current public records for Siasconset Water Department

EPA’s facility report, the Massachusetts drinking-water program, and Siasconset Water Department’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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