OSS Professional Installer List

This list is a list of companies that are licensed by Cowlitz County to install septic systems. Cowlitz County does not endorse, guaranty, or warranty the workmanship of any of these companies or individuals.

Do Your Homework

 As with any professional you hire, do your homework. The County is not able to give suggestions or references. If you have any complaints concerning one of these companies please report them to the Environmental Health Unit (EHU) at 360-414-5599, email at omseptic@co.cowlitz.wa.us, or fill out a Request for Investigation form and submit it to Health & Human Services.

Business Name
Name
Mail AddressCity, State, Zip
Phone
A-ACTION GROUP UTILITIES INC
POTTER, BENNETT
620 93RD AVE
OLYMPIA, WA 98501
360-943-9200
ADRENALINE SERVICES LLC
HOMOLA, RYAN
7115 NE 209TH ST
BATTLE GROUND, WA 98604
360-831-7656
ADVANCE SEWER & DRAINFLETCHER, BRIANPO BOX 1831LONGVIEW, WA 98632360-578-2831
AMOS EXCAVATING/ CONSTRUCTION
AMOS, LUKE
366 DELAMETER RD
CASTLE ROCK, WA 98611
360-749-3330
BLOOMQUIST SEPTIC INSPECTIONS LLC
ROBERTS, PETER
PO BOX 3008
BATTLE GROUND, WA, 98604
360-686-0011
BUCK & SONS CONSTRUCTION LLC
BUCK, JASON
220 WALLACE RD
WOODLAND, WA 98674
360-225-8044
CARNEY CONSTRUCTION INC
CARNEY, ARTHUR
PO BOX 327
TOUTLE, WA 98649
360-274-7980
CHILTON EXCAVATION
RICHARDS, KEITH
1760 DOWN RIVER DR
WOODLAND, WA 98674
360-225-4857
CLARK COUNTY SEPTIC SYSTEMS LLC
KIRKELIE, KEN
21506 NW 31ST AVE
RIDGEFIELD, WA 98642
360-887-1800
D B & R INC.
YOUNG, DAVE
1149 RUSH RD
CHEHALIS, WA 98532
360-269-3877
DOWNHILL EXCAVATION & DRAIN SERVICE
DALKE, LANCE
PO BOX 103
KALAMA, WA 98626
360-989-5238
EARTHWORKS EXCAVATING SERVICES INC
WIARD, MATT
PO BOX 821624
VANCOUVER, WA 98682
360-772-0088
GLACIER INDUSTRIES LLC
HAMMERSTROM, DANIEL
PO BOX 614
YACOLT, WA 98675
360-989-5500
GLACIER INSTUSTRIES LLC
MERRIMAN, BRITT
PO BOX 614
YACOLT, WA 98675
360-773-7719
HORIZONS NW EXCAVATING & SEPTIC LLC
JAYNES, JOSH
16617 NE 197TH AVE
BRUSH PRAIRIE, WA 98606
360-798-1115
HOWDYS DOODY SERVICE INC
LESMAN, CHRIS
620 93RD AVE, SE
OLYMPIA, WA 98501
360-584-9936
JEFFRIES REPAIR AND SEPTIC
JEFFRIES, STEVE
PO BOX 901
CASTLE ROCK, WA 98611
360-430-6891
J.P. HUHTA UNDERGROUND LLC
HUHTA, JEAN-PAUL
PO BOX 1001
LONGVIEW, WA 98632
360-751-5734
KRONE TRUCKING
KRONE, JEFF
161 RIVERVIEW DRIVE
CASTLE ROCK, WA 98611
360-957-3322
LPH INC
TINKESS, CHRIS
540 OLEQUAH HTS RD
CASTLE ROCK, WA 98611
360-396-7051
L&S CONTRACTORS
ROTSCHY, BASIL F
22405 NE WH GARNER RD
YACOLT, WA 98675
360-686-3827
NW CONSTRUCTION GENERAL CONTRACT
BECKER, DEVIN
22317 NE 72ND AVEBATTLE GROUND, WA 98604360-687-2040
NORTHWEST CASCADE INC
CUSHMAN, ADAM
PO BOX 73399
PUYALLUP, WA 98374
253-848-2371
NORTHWEST SITEWORKS INC
TAPANI, NICK
PO BOX 699
BATTLE GROUND, WA 98604
360-772-4348
PACIFIC SITEWORKS LLC
POSEY, BRANDON R.
PO BOX 821394
VANCOUVER, WA 98682
360-241-0849
RICH ENTERPRISES KALAMA LLC
RICH, MATT
PO BOX 507
KALAMA, WA 98625
360-927-9045
ROBB CONSTRUCTION INC
ROBB, BRET
7209 NE 159TH STREET
VANCOUVER, WA 98662
360-573-3030
SAM LONGTAIN CONSTRUCTION
LONGTAIN, SAM
335 ELOCHOMAN VALLEY RD
CATHLAMET, WA 98612
360-957-0503
SEPPANEN CONSTRUCTION LLC
JUSSILA, SAM
27208 NE 10TH AVE, UNIT 110
RIDGEFIELD, WA 98642
360-263-7950
SEPPANEN CONSTRUCTION LLC
MYLLYMAKI, LUKE
27208 NE 10TH AVE, UNIT 110
RIDGEFIELD, WA 98642
360-263-7950
SEPPANEN CONSTRUCTION LLC
SEPPANEN, BRIAN
27208 NE 10TH AVE, UNIT 110
RIDGEFIELD, WA 98642
360-263-7950
SPENCER’S TRUCKING & EXCAVATING INC
SPENCER, TOM
2780 PACIFIC AVE N
KELSO, WA 98626
360-577-8828
SPENCER’S TRUCKING & EXCAVATING INC
SPENCER, TONY
2780 PACIFIC AVE N
KELSO, WA 98626
360-577-8828