Basalt BlackwaterSeptic service company in Caldwell, ID

Basalt Blackwater is ranked #16 of 37 septic service companies in Caldwell by CR Score, with 55 out of 100 as of November 2026. The score weighs reputation, credentials, review volume, recency, availability, trade focus, proximity, claimed profile, partnered and ContractorsRanked reviews. No business can pay to change its rank.

Basalt Blackwater is open Monday to Friday. Its listed hours are Monday to Thursday, 8:30 AM – 5 PM; Friday, 8:30 AM – 4 PM. It is closed on Saturdays and closed on Sundays. Hours come from the business listing; holiday hours may differ.

Serves Caldwell and 9 towns within 25 miles: Middleton, Star, Nampa, Meridian, Eagle, Emmett, Kuna, Garden City and Boise. The list is based on the business's location and the usual service radius for septic and sewer service. Confirm your address is covered when you call.

Basalt Blackwater has a rating of 5.0 from 24 Google reviews. The CR Score adjusts the star rating for review count, so a high rating from a few reviews counts for less than the same rating from many.

Call Basalt Blackwater on (208) 453-8900. The business is at 704 E Albany St, Caldwell, ID 83605. Its website is linked in the key facts on this page. Ask for a written estimate before any work starts.