The City of Chino Hills holds an annual Water Conservation Design-a-Sign Contest for students in grades kindergarten-12 who live or attend school in Chino Hills. Winning posters are made into street signs and displayed at the city hall round-a-bout before they are permanently installed throughout the City. Winners from each grade will be recognized at the May City Council meeting where they will receive their awards and prizes.
2021 Contest Winners:
| Kindergarten Category |
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| 1st Place | Lucas Chen | Eagle Canyon Elementary |
| 2nd Place | Ryan Jo | Rolling Ridge Elementary |
| 3rd Place | Aden Wang | Rolling Ridge Elementary |
| 1st - 3rd Grade Category |
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| 1st Place | Angela Gu | Gerald F. Litel Elementary |
| 2nd Place | Chole Mulia | Rolling Ridge Elementary |
| 3rd Place | Kira Zhilin Zhang | Chaparral Elementary |
| 4th - 6th Grade Category |
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| 1st Place | Selina Gu | Gerald F. Litel Elementary |
| 2nd Place | Jill Wang | Rolling Ridge Elementary |
| 3rd Place | Zilin (Fiona) Bi | Butterfield Ranch Elementary |
| 7th - 12th Grade Category |
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| 1st Place | Priyasha Panigrahi | Ruben S. Ayala High School |
| 2nd Place | Catherine Gruen | Sage Oak Charter School |
| 3rd Place | Elia Wong | Chino Hills High School |
