EPA EXPORT · 13 SEP 2026FEDERAL COMPLIANCE RECORDS · NOT A HOME WATER TEST
TAP WATERLEDGERPublic system compliance records
PUBLIC WATER SYSTEM RECORDPWSID CA4110016

California · Surface water purchased

Town Of Hillsborough

EPA’s September 2026 export lists Town Of Hillsborough (PWSID CA4110016) as No current violation flagged, serving a reported 11,766 people from a surface water purchased source, with 0 rules in current violation.

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

CURRENT EXPORTNo current violation flaggedNo current violation is flagged in this EPA export. This is not a household water test.
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01 / CURRENT FLAGS

EPA compliance flags for Town Of Hillsborough

Town Of Hillsborough is listed as no current violation flagged 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.
  • 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 violations0rolling history field
Quarters with SNC0significant noncompliance
Rules in current violation0EPA export count
Rules in 3-year window0EPA export count

Current rule entries for Town Of Hillsborough

EPA supplied 0 current contaminant, rule, or violation-category entries for Town Of Hillsborough in the exported fields used here.

  • No current contaminant or rule names were supplied in these export fields.

Three-year entries for Town Of Hillsborough

EPA supplied 0 contaminant or rule entries for Town Of Hillsborough in the three-year history field.

  • No three-year contaminant or rule names were supplied in this export field.

03 / OVERSIGHT & COVERAGE

Visits and sanitary surveys for Town Of Hillsborough

The export lists 2 site visits in five years and 0 significant deficiencies for Town Of Hillsborough.

Site visits, past 5 years
2
Inspection visits
0
Other visits
2
Last sanitary survey
03/04/2026
Last recorded visit
03/04/2026
Significant deficiencies
0

Places served by Town Of Hillsborough

EPA associates Town Of Hillsborough with the listed cities, counties, ZIP codes, and California service area identifiers.

State / territory
California
Cities
Not supplied
Counties
San Mateo
ZIP codes
Not supplied
Federal PWSID
CA4110016
Registry ID
110016617909

04 / HOW TO USE THIS RECORD

Current public records for Town Of Hillsborough

EPA’s facility report, the California drinking-water program, and Town Of Hillsborough’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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