★★★★½ 4.9 · 421 Google reviews · 26207 Maple Valley Black Diamond Rd SE Ste D1
Lilly's Septic Service holds a 4.9 star average across 421 Google reviews, which places it at #18 for septic services in Seattle on our rankings. Positions come from verified public ratings and review volume, refreshed monthly. See the full list on the Septic Services rankings page.
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