| 1989 | 1990 in coasters | 1991 |
| 1989 | 1990 in rides | 1991 |
| 1989 | 1990 in water slides | 1991 |
This page is for everything related to water slides that occurred during the year 1990.
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| Name | Park | Country | Type | Manufacturer | Opened
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Closed
| Name | Park | Country | Type | Manufacturer | Closed
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