Del Sur Elementary to Reopen Following Mold Remediation
The San Diego school is set to welcome students back on July 9, 2027, after significant infrastructure updates.
Updated on Oct. 21, 2026 in Asthma
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Del Sur Elementary School in the Poway Unified School District is scheduled to reopen on July 9, 2027, following a prolonged closure due to mold. The school had been shut down in August 2026, requiring students to be temporarily relocated to Stone Ranch Elementary.
Why it matters
The closure reflects the health risks posed by indoor mold exposure, which can exacerbate respiratory conditions like asthma. By addressing the root moisture issues before reopening, the district aims to ensure a healthier indoor environment for students and staff.
A 2026 mold assessment identified microbial growth on chilled-water pipes, building upon 2024 internal records that originally documented mold in six classrooms. It remains unclear how the district will conduct ongoing air quality monitoring to prevent future recurrences.
The players
Poway Unified School District
The local school authority responsible for managing student environments and facilities.
The details
The district is replacing the school's HVAC system to resolve the humidity issues that allowed Stachybotrys mold to grow on carpet and wall frames. Remediation efforts involved removing contaminated flooring, wall, and ceiling materials throughout the site. These structural changes are intended to eliminate the moisture sources required for mold to thrive.
Timeline
2024: Internal records first flagged six rooms with mold concerns.
August 2026: The school closed abruptly before the start of the academic year.
September 30 - October 8, 2026: A comprehensive mold assessment was conducted.
November 5, 2026: Officials briefed the school board on the mold findings.
July 9, 2027: The scheduled reopening date for Del Sur Elementary.
Health Landscape
This project follows the 2026 mold-related closure of Del Sur Elementary, highlighting the physical infrastructure challenges schools face in maintaining healthy indoor air. The reopening represents the final phase of a multi-year remediation effort to restore safe learning conditions.
Parents of students with asthma or environmental allergies should monitor for any return of respiratory symptoms once the school reopens. It is worth discussing with your pediatrician how to document and report any health concerns regarding school building quality.
The takeaway
Mold remediation in school buildings is a critical step in maintaining a healthy environment for children with respiratory sensitivities. If you notice signs of water damage or unusual odors in your child's learning environment, raise these concerns with the school administration.
Further reading
Learn more about managing indoor air quality and its impact on Asthma in the classroom.
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