Imperial County is desert country — the Imperial Valley’s farm communities and the cities along Highway 86 and Interstate 8: El Centro, Brawley, Calexico, Imperial, Holtville, Calipatria, and Westmorland. The underground work there is its own discipline: municipal water and sewer systems serving the valley cities, agricultural drainage, and long utility runs in ground that stays hot and dry most of the year. It is the eastern end of our service area, so we take on Imperial County work selectively — well-defined underground scopes for agencies, general contractors, and owners who need a Class A contractor that self-performs. We serve El Centro, Brawley, Calexico, Imperial, Holtville, Calipatria, and Westmorland, bidding public and private work.
Civil & Underground Services in Imperial County
One Class A contractor for the whole underground scope — self-performed by our own crews, from open cut to final restoration.
- Underground Utilities — Complete wet and dry utility installation — pipe, vaults, and conduit — from trench to tie-in.
- Sewer & Water Mains — New mains, replacements, and tie-ins built to agency spec and pressure-tested before backfill.
- Storm Drain — Storm drain pipe, structures, and catch basins that move water where it belongs.
- Trenching & Excavation — Safe, shored, traffic-controlled excavation by our own operators and our own iron.
- Slurry Backfill & Flowable Fill — Flowable fill (CLSM) that self-compacts to spec — no compaction testing, streets reopen sooner.
- Concrete & Street Restoration — Trench paving, curb, gutter, and sidewalk restored to spec after the underground work.
- Grading & Paving — Rough and finish grading, base, and asphalt paving for streets, lots, and utility corridors.
Part of our eight-county Southern California service area — see all locations we serve.
Public Works in Imperial County
Mars Civil bids both public and private work in Imperial County — valley cities, county work, and irrigation and drainage district scopes. We are set up for public works the way agencies require it — prevailing-wage crews, certified payroll, and complete bid packages turned around on deadline — and our SB-PW / SB(Micro) certification supports small business participation goals.
Mars Civil is a division of Mars Construction Industries Corp — CSLB License #1138550 (A – General Engineering), SB-PW and SB(Micro) certified, Small Business Certification ID 2046756. Our small business certification also helps agencies and prime contractors meet participation goals on public work.
Frequently Asked Questions
Who handles permits and inspections for underground work in Imperial County?
It depends on where the job sits. El Centro, Brawley, Calexico, and the other valley cities run their own public works permits and inspections, county roads answer to Imperial County, and agricultural drainage work often coordinates with the Imperial Irrigation District. We build to the governing agency’s spec, handle our permit and inspection coordination as part of the scope, and restore surfaces to that agency’s standard.
Isn’t Imperial County a long way from your base?
It is the far end of our range, and we price that honestly. Crews and equipment mobilize from our Orange County yard, and mobilization is in the bid up front — no surprises later. Well-defined underground scopes with clear plans and a firm bid date are the best fit; call 714.746.7611 and we will tell you straight whether we can hit your schedule.
What kinds of work does Mars Civil take on in Imperial County?
Municipal and agricultural underground work: sewer and water mains, underground utilities, storm drain and drainage support, trenching and excavation, slurry backfill and flowable fill, concrete and street restoration, and grading and paving — self-performed by our own crews and our own equipment.
Does Mars Civil do prevailing-wage public works?
Yes — we’re SB-PW and SB(Micro) certified (Small Business Certification ID 2046756), prevailing-wage ready with certified payroll, and set up for agency bid packages and submittals.
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Bid requests, plan sets, and project questions — send them over and we’ll respond fast.