<?xml version="1.0" encoding="US-ASCII"?>
<!-- This schema was created by staff of the U.S. Securities and Exchange Commission. -->
<!-- Data and content created by government employees within the scope of their employment -->
<!-- are not subject to domestic copyright protection. 17 U.S.C. 105. -->
<xs:schema
xmlns:sbs-sbsef="http://xbrl.sec.gov/sbs-sbsef/2027"
xmlns:xs="http://www.w3.org/2001/XMLSchema"
targetNamespace="http://xbrl.sec.gov/sbs-sbsef/2027"
elementFormDefault="qualified">
<xs:import namespace="http://xbrl.sec.gov/sbs-sbsef-fin/2027" schemaLocation="sbs-sbsef-fin-2027.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/sbs-sbsef-fex/2027" schemaLocation="sbs-sbsef-fex-2027.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/sbs-sbsef-ocx/2027" schemaLocation="sbs-sbsef-ocx-2027.xsd"/>
<xs:import namespace="http://xbrl.sec.gov/sbs-sbsef-cco/2027" schemaLocation="sbs-sbsef-cco-2027.xsd"/>
<xs:annotation>
<xs:appinfo/>
</xs:annotation>
</xs:schema>