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Yard Drainage and Stormwater Solutions in Miami-Dade

Good drainage keeps rainwater off the septic drain field and away from the house.

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Drainage and Stormwater: the short answer

Good drainage keeps rainwater off the septic drain field and away from the house. In Miami, where 51.64 of the 67.41 inches of yearly rain fall from May to October, French drains, catch basins and regrading are often what keep a septic system working through summer.

The EPA advises keeping roof drains, sump pumps and other rainwater drainage away from the drain field. A French drain or swale that sends water toward the field does the opposite, so we design drainage and septic together.

Any outfall or overflow that discharges to a Miami-Dade water body needs a County Class II permit, and larger developments need a surface water management permit.

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Questions

Can drainage problems damage my septic system?

Yes. Water directed onto the drain field saturates it and can cause backups. Drainage should carry water away from the field.

Do I need a permit for a French drain?

Not usually for a drain that stays on your property. Connecting to a canal or other water body needs a County Class II permit.

Sources

Last updated: October 28, 2026. Facts and figures on this page come from these sources, opened on October 28, 2026. Prices are typical published ranges, not a quote.