Well drilling · Pumps & water systems · Water treatment & filtration · Well decommissioning

Moerke & Sons Pump & Drilling

Chehalis well driller and pump contractor, family-owned since 1980, offering well drilling and decommissioning, 24/7 pump repair, water filtration and bulk water delivery in southwest Washington.

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Links to this business’s own pages on each review site, last checked Oct 24, 2026.

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At a glance

Ecology driller licenses
3 water well, 1 resource protection operators (license 2253, 2253, 3275, 3389) · verify with Ecology
L&I registration
MOERKSP072N5 · verify with L&I
L&I registration
MOERKSP774LW · verify with L&I
L&I registration
MOERKSP981DA · verify with L&I
Address
1162 NW State Ave, Chehalis, WA 98532
Serves
Lewis, Thurston, Mason, Cowlitz, Grays Harbor, Pierce counties
Services
Domestic well drilling, Pump installation, Pump repair & replacement, Pressure tanks & switches, Constant-pressure (VFD) systems, Cisterns & storage tanks, Flow & yield tests, Sediment filters & sand separators, UV disinfection, Water softeners, Well decommissioning, 24/7 emergency service

Moerke & Sons Pump & Drilling is a family-owned well and pump company at 1162 Northwest State Avenue in Chehalis, in Lewis County. It says it has operated since 1980. The office is open weekdays, and the company offers after-hours emergency service for well pump troubleshooting and repair and for homes that are out of water.

Drilling. The company drills water wells and decommissions old wells. Its drilling page explains how to prepare a site for the rig: a level, stable pad, about 40 feet of overhead clearance and room behind the rig for cuttings.

Pumps. It installs and repairs submersible, centrifugal and line shaft turbine pumps, variable speed drives, reservoir tanks and pressure tanks, and runs flow tests. It also sells well parts.

Water treatment. It sells cartridge filters (pleated, carbon and melt blown) and spin-down sand separators, media filtration for oxidized iron, pH, chlorine and sulfur odor, UV disinfection and water softeners. It also delivers bulk water to fill storage.

Where it works. The company names Lewis, Thurston, Mason, Cowlitz and Grays Harbor counties, and has pages for Shelton, Olympia, Yelm, Eatonville and Castle Rock.

Licensing. Ecology’s driller search lists three operators with active water well licenses at the company, one of whom also holds a resource protection license. L&I lists general contractor, plumbing (domestic pump) and electrical (pump and irrigation) registrations.