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302.6 Wastewater Discharge
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Where wastewater from pools or spas, such as backwash water from filters and water from deck drains discharge to a building drainage system, the connection shall be through an air gap in accordance with the International Plumbing Code or the International Residential Code as applicable in accordance with Section 102.7.1.
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302.6 General Compliance, Wastewater Discharge
Where wastewater from pools or spas, such as backwash water from filters and water from deck drains discharge to a building drainage system ...
Swimming Pool and Spa Code 2018 of Washington > 3 General Compliance > 302 Electrical, Plumbing, Mechanical and Fuel Gas Requirements > 302.6 Wastewater Discharge
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