Backflow Testing and Repair in Chehalis and Centralia, WA

backflow device

Reliable Repairs and Backflow Testing in Chehalis and Centralia, WA

Backflow issues can pose serious risks to your home or business by allowing contaminated water to enter your clean water supply. Regular backflow testing is essential to ensure your plumbing system is operating safely and in compliance with local regulations. At Rock Creek Plumbing LLC, we specialize in professional backflow testing in Chehalis and Centralia, WA, and surrounding areas, ensuring your property remains protected. If we detect any issues, our skilled team is also equipped to provide fast and effective backflow repair services. Call us at (564)-244-7558 to learn more.

Professionals You Can Trust

At Rock Creek Plumbing LLC, we have years of experience handling backflow prevention for residential and commercial properties. Our team is fully licensed and trained to perform accurate testing, diagnose potential problems, and provide the necessary repairs. We use industry-leading equipment to ensure reliable results and work efficiently to minimize disruptions to your day. Our commitment to quality service and customer satisfaction means you can trust us to protect your water supply with professionalism and care.

All the Backflow Services You Need

We provide a full range of backflow services to keep your water supply safe and your plumbing system up to code. Whether you need routine testing or immediate repairs, our team is ready to assist.

  • Certified Backflow Testing – We perform thorough inspections to ensure your backflow prevention system is functioning properly and meets local compliance standards.
  • Backflow Prevention Device Installation – If you need a new backflow preventer, we install high-quality systems that protect your water supply from contamination.
  • Backflow Repairs & Maintenance – If your system fails testing or shows signs of damage, we provide fast and effective repairs to restore proper function.
  • Annual Testing & Certification – Many local regulations require annual backflow testing; we handle all necessary testing and paperwork to keep you in compliance.

Schedule Your Backflow Service Today!

Don’t take risks with your water quality—trust Rock Creek Plumbing LLC for expert backflow testing in Chehalis and Centralia, WA, and surrounding areas. Whether you need routine testing or urgent repairs, we have the expertise to keep your system working properly. Contact us to schedule an appointment or learn more about our backflow prevention services. Call (564)-244-7558 now to ensure the safety of your water supply!

Most Recent Pins (48)

RAND KOSKINIEMI
Rock Creek Plumbing LLC installed a sump pump system in a crawlspace to control rainwater in Castle Rock, Washington. The team placed an 18 x 22 perforated basin with a submersible pump. They connected it to a PVC drain line with a check valve and directed the discharge to an exterior downspout through the nearest crawlspace vent.
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Rock Creek Plumbing LLC installed an ABS waste and overflow assembly with a chrome trim in Castle Rock, Washington. The team aligned components, modified existing plumbing, and tested the system to ensure a watertight seal and proper drainage. The service improved plumbing efficiency and prevented leaks in the bathtub system.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a leaking pipe section with new PEX piping in Longview, Washington. The team identified the damaged area, removed the faulty pipe, and installed durable PEX to restore proper water flow and prevent further leaks.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced an old hose bib with a new sillcock for an exterior faucet in Morton, Washington. This service restored outdoor water access and improved connection reliability for garden or hose use. The team completed the installation efficiently, ensuring a secure fit and proper function.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC repaired an underground main water line leak in Morton, Washington. The team completed excavation, performed the repair, and backfilled the trench. They then tested and inspected the line to confirm there were no leaks.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC used an air ram and drain snake to clear a clogged pipe in Castle Rock, Washington. The service lasted up to one hour and aimed to restore proper drainage by removing the blockage efficiently. This process helps prevent further plumbing issues and maintains water flow in residential or commercial systems.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced an old well tee and pressure tank with a new 80-gallon tank in Yelm, Washington. The team installed a new well tee with gauge and relief valve, a 40-60 psi pressure switch, isolation valves, PEX piping, and a 4x20 sediment filter housing.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a washer box with rear wall access in Castle Rock, Washington. The team installed a new washer box with a hammer arrestor, connected new plumbing lines, and tested for leaks. Drywall repair was not included. The service includes a one-year labor warranty.
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Rock Creek Plumbing LLC repaired a leak on a 3/4-inch water main located in a crawl space in Yelm, Washington. The team tested and inspected the line to confirm proper function and ensure no additional leaks were present.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced old waste piping in Mossyrock, Washington. The team installed new ABS lines for a bathroom, kitchen sink, and washer box. They connected the system to existing vents, added new P-traps, secured all piping with supports, and tested for drainage flow and code compliance.
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Rock Creek Plumbing LLC repaired a leaking ABS drain pipe in Elma, Washington. The team located the damaged section, removed it, installed new piping with secure fittings, and tested the system to confirm proper drainage.
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Rock Creek Plumbing LLC replaced an old kitchen faucet with a chrome pull-down fixture and sealed the soap dispenser opening. They also installed a new chrome quarter-turn angle stop. This plumbing service was completed in Chehalis, Washington.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced an old pressure tank system with a new 80-gallon tank in Mossyrock, Washington. The team installed a well tee with gauge and pressure relief, added isolation valves, and secured PEX piping along the wall and floor for stable water flow distribution.
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A plumber in Chehalis, Washington cut and extended a copper pipe to its original position and installed a 1/4-turn chrome angle stop. The system was pressure-tested to ensure it had no leaks.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC completed a full waste line repipe for a one-bathroom home in Castle Rock, Washington. The team removed outdated piping, installed new ABS drain lines, connected all fixture drains, secured all piping to code, and tested the system to ensure proper drainage and leak-free performance.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC repaired an underground main water line leak in Castle Rock, Washington. The team located the damaged line, exposed it, and completed the necessary pipe replacement to stop water loss and restore service. This work ensured stable water flow and prevented further underground damage to the property.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC installed a customer-supplied toilet, lavatory faucet, and drop-in sink in Castle Rock, Washington. The service included removal of old fixtures, installation of a new wax ring and toilet bolts, connection to the water line, toilet alignment, and a shower head replacement. All work comes with a one-year labor warranty.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC installed a new hose bib for an exterior faucet in Morton, Washington. This service ensures proper water access outside the home for gardening or cleaning. The installation improves efficiency and supports reliable outdoor water use.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced lower cabinet copper pipes with PEX in Longview, Washington. The plumber connected the new PEX lines to existing copper and installed two 1/4-turn angle stops for improved water shut-off control.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC cleared a main sewer line using a Kingair ram for one hour and replaced a Kohler shower cartridge in a master bathtub. They tested all work to confirm no leaks. This plumbing service took place in Castle Rock, Washington.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC moved a water heater to support a remediation project in Tenino, Washington. The service ensured proper relocation of plumbing components to allow for environmental or structural cleanup work.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC completed rough plumbing for a master bedroom addition in Centralia, Washington. Work included in-wall and underfloor lines for two bathroom sinks, a mud set shower with Delta valve, one toilet, and three hose bibs. The team tied waste lines to the existing sewer, installed isolation valves, and tested water and waste systems.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a leaking pipe section with new PEX piping in Chehalis, Washington. The service involved removing the damaged pipe and installing durable, flexible PEX to restore water flow and prevent future leaks.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC performed leak detection using a listening device for up to four hours and installed twelve ball valves on a PEX line in Chehalis, Washington. This service identified potential leaks and upgraded the water control system to improve function and reliability.
RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a 10-foot ice maker line and routed a braided supply line through cabinets to reconnect a refrigerator in Morton, Washington. The service included safe installation of new water lines and ensured a secure refrigerator connection.
RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced an angle stop using a Quest adapter with a chrome quarter turn in Chehalis, Washington. The team flushed either a tank or tankless water heater and installed a new bathroom faucet. The faucet was provided separately by the customer.
RAND KOSKINIEMI
Rock Creek Plumbing LLC completed a commercial plumbing service in Morton, Washington. Technicians replaced three wall-mount pre-rinse faucets—one with an eyewash feature—installed a new mop sink faucet, replaced basket strainers and drain lines for a three-compartment sink, and fitted a new owner-supplied pedal valve, ensuring leak-free, functional connections throughout.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC removed an existing tub-shower unit and installed a new 60x32 three-piece tub-shower stall in Castle Rock, Washington. The team updated the valve with a chrome Delta universal model, adjusted the drain for a right-hand setup, and installed a new waste and overflow kit. All components were tested for leaks.
RAND KOSKINIEMI
Rock Creek Plumbing LLC routed a kitchen vent through an exterior wall in Centralia, Washington. They extended the vent upward along the wall and sealed the wall opening with silicone sealant. The installation used Schedule 40 ABS pipe to ensure durability and proper airflow.
RAND KOSKINIEMI
A plumber used an air ram and drain snake to clear a clog during a one-hour service call in Morton, Washington. This method helps restore normal drainage in residential or commercial plumbing systems by dislodging blockages in pipes.
RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced an old low boy water heater with a new 38-gallon A.O. Smith electric model in Packwood, Washington. The team disconnected water and power, removed the old unit, installed the new heater with proper fittings, tested for function, and cleaned the area after completion.
RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a faulty pressure switch causing pressure spikes in a well pump system. The team installed a new 40–60 PSI switch and confirmed the pressure tank functioned properly. This service restored normal water pressure. Completed in Castle Rock, Washington.
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RAND KOSKINIEMI
A plumber used an air ram and drain snake to clear a clog during a one-hour service in Longview, Washington. The work involved dislodging debris from the pipe to restore proper drainage. This solution addressed slow or blocked drains caused by buildup or obstruction.
RAND KOSKINIEMI
Rock Creek Plumbing LLC repaired 3 to 4 feet of sewer main pipe from the cleanout to inside the building in Chehalis, Washington. Technicians used new ABS pipe and fittings, reconnected joints at correct angles, and tested the line to confirm it was leak-free.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC performed a camera inspection of the main sewer line up to 200 feet and repaired a leak in the underground main water line at a ¾-inch copper tee. Service was completed in Chehalis, Washington.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC repiped a full water distribution system in Centralia, Washington. The project included connections for bathroom sinks, toilets, showers, a kitchen sink, dishwasher, laundry, hose bibs, and a water heater. Technicians installed PEX piping, isolation valves, and performed a system-wide pressure test to ensure function and code compliance.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC cleared a clogged drain using an air ram or drain snake during a one-hour service in Yelm, Washington. The technician removed the blockage to restore normal water flow efficiently and safely.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC installed a new kitchen faucet using a customer-supplied model in Morton, Washington. The faucet matched the previous one, ensuring compatibility without additional fittings. This service focused on proper alignment and secure connection to existing water lines.
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RAND KOSKINIEMI
A plumber replaced a faulty flapper to stop a toilet from leaking or running continuously. This repair helped conserve water and improve toilet function. Service completed in Chehalis, Washington.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC completed a VIP plumbing service in Morton, Washington. The work involved specialized support for a priority customer. This service focused on meeting specific plumbing needs with prompt and direct assistance in a residential setting.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC cleared a main drain line using a King Air Ram snake tool for one hour. The service included an after-hours visit. This plumbing work took place in Longview, Washington.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC installed an ABS waste and overflow assembly in Longview, Washington. The team ensured proper alignment, made required plumbing adjustments, and secured the system for leak-free drainage. Final testing confirmed reliable water flow and sealed connections.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC repaired an underground main water line in Centralia, Washington. The crew cut and capped a polyurethane line 12 inches deep to prevent freezing. They verified the irrigation line and installed a shut-off valve beneath the pump lid using 1-inch PVC piping.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC performed a four-hour leak detection using an acoustic listening device in Castle Rock, Washington. The technician used specialized equipment to locate hidden pipe leaks and assess areas of water loss without excavation. This service helps identify leaks with precision and reduces unnecessary damage during inspection.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC repaired a leaking bathroom sink drain line and a kitchen drain line in Raymond, Washington. The team tested both lines after the repair to confirm the leaks had been fixed and water was flowing properly.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC repaired a leaking underground main water line in Castle Rock, Washington. The team identified the leak, accessed the damaged section, and restored the water line to proper function. This service helped prevent water loss and ensured stable water supply for the property.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a tub shower valve inside the wall in Chehalis, Washington. The work included installing a Moen Posi-Temp valve in chrome, adding a 14x14 access panel, attaching a removable shower wand, and replacing the spout with a diverter.
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RAND KOSKINIEMI
Rock Creek Plumbing LLC replaced a tub shower valve inside the wall in Chehalis, Washington. The work included installing a Moen Posi-Temp chrome valve, a 14x14 access panel, a detachable shower wand, and a new tub spout with a diverter for improved water control.
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