Optimal Sewer & Drain LLC

Sanitation System/Side Sewers · Spanaway, WA · License #OPTIMSD761K3

Expired since May 23, 2026

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  • State-verified Checked against WA L&I records, updated daily.
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License facts

Optimal Sewer & Drain LLC is one of 3 Sanitation System/Side Sewers contractors registered in Spanaway, registered with WA L&I since 2024. Principals on record since 2024.

License type
CONSTRUCTION CONTRACTOR
Effective date
May 23, 2024
Expiration date
May 23, 2026
UBI
605546715
Business type
Limited Liability Company
Phone
(253) 304-1525
Location
Spanaway, WA 98387

Source: WA L&I contractor registration — verified Aug 13, 2026. Applies to every row above.

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Bond & insurance on file

What the bond and insurance requirements mean for homeowners

To register as a specialty contractor in Washington, a business must file a $15,000 surety bond with the Department of Labor & Industries; general contractors file $30,000.

The bond is a limited fund a homeowner (or subcontractor or supplier) can make a claim against, through the courts, if a registered contractor fails to meet its obligations on a job. Contractors must also keep general liability insurance on file — at least $50,000 in property damage and $200,000 in public liability coverage, or a $250,000 combined single limit — which covers damage the contractor causes, not workmanship disputes. The rows above are the bond and insurance filings L&I publishes for this registration; whether a specific filing applies to a specific project depends on its dates and terms.

Principals

NameStart date
Denzyladamlopaka BassetteMay 23, 2024
What is a Sanitation System/Side Sewers contractor licensed to do in Washington?

Septic and side sewer contractors install and repair on-site sewage systems and the side sewer lines that connect buildings to a main. Typical jobs include septic tank and drainfield installation, sewer line replacement, and repairs found during inspections. As a condition of registration, contractors in this category file a $15,000 surety bond and proof of general liability insurance with WA L&I. Washington currently lists 3 Sanitation System/Side Sewers contractors registered in Spanaway.

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Built from Washington State L&I public records, updated Aug 13, 2026. No star ratings or reviews — verification only.