When water gets in, the damage clock starts immediately. COS Water Damage Restoration's Holliston Emergency Water Removal crew carries professional-grade extraction systems to every job, arriving fast and working fast to limit the scope of what gets damaged.
The right water removal team in Holliston gets to you fast, removes the water completely, and transitions immediately to structural protection — not a service that extracts visible water and leaves hidden moisture to fuel mold growth.
Your water removal response time is directly determined by where the crew is based. Ours is based in Holliston.
Clean supply line failures, Category 2 gray water overflows, and Category 3 sewage-contaminated events each require different extraction methods and PPE. Our Holliston team is trained and equipped for every classification.
No surprise billing after the fact — your written estimate is your price, period.
We document everything at the extraction phase — before conditions change and evidence is lost.
COS Water Damage Restoration's Emergency Water Removal in Holliston covers the full spectrum of water intrusion events — from minor appliance overflows to major storm flooding, and every source of water damage in between.
Rapid volume removal at this stage prevents saturation from reaching framing and subfloor materials.
Pipe failures in Holliston properties — whether from freeze-thaw cycles, corrosion, or pressure failure — release clean or lightly contaminated water rapidly into wall assemblies and floor cavities. Our Holliston crews arrive with injection drying adapters specifically for pipe-failure scenarios where water has traveled behind drywall before it reached the floor.
After extraction, crawlspace vapor barrier inspection and replacement prevents recurring moisture accumulation.
We never use standard extraction equipment on contaminated water events — cross-contamination risk is real, and proper equipment matters.
Dishwasher failures, washing machine overflows, refrigerator line leaks, and water heater ruptures in Holliston homes release water that travels quickly across hard surfaces and wicks under baseboards and into subfloor materials. Even small appliance events can saturate significant square footage if not caught and extracted within hours of the failure.
Water events in Holliston commercial properties carry additional complexity: larger square footages, infrastructure like server rooms and electrical panels, business interruption risk, and tenant notification requirements. Our commercial Emergency Water Removal team in Holliston deploys at scale — multiple extraction units, larger crew sizes, after-hours scheduling to minimize disruption — and maintains a dedicated project manager for commercial loss communication.


Call +1-844-499-0972 and a live dispatcher answers immediately — no voicemail, no automated menu, no hold queue. Your dispatcher identifies the closest Holliston crew, confirms availability, and dispatches within the first few minutes of your call.
Local crew, local knowledge, and fast roads — your Holliston response is as fast as it can be.
On arrival, our crew assesses the water source, category, and extent of migration before placing any equipment. A written scope and cost estimate is prepared and reviewed with you before extraction begins — the number you approve is the invoice you receive.
Extraction continues until standing water is completely eliminated and surface moisture is at levels appropriate for structural drying handoff. Our crew immediately stages dehumidifiers and air movers to begin the drying phase — preventing the 24-48 hour mold risk window from opening.



"A pipe burst in our Holliston home's basement at 11 p.m. on a Saturday. I was bracing for a long night of being on hold. COS Water Damage Restoration answered on the second ring, had a crew at my door in 52 minutes, and the standing water was completely out before 2 a.m. They stayed to set up the drying equipment and I woke up to a dehumidifier running and a dry basement floor. Absolutely excellent."
"A sump pump failure let in about 4 inches of water across our entire finished basement in Holliston. I found it at 6 a.m. on a Monday. COS Water Damage Restoration was on site by 7:15, had the water out by 10, and the drying equipment running before I left for work. The moisture mapping showed water under our LVP flooring that would have become a mold problem if we hadn't caught it. Grateful for the thoroughness."
"Three different companies told me they could help with our Holliston storm flooding. Only COS Water Damage Restoration showed up with a truck-mounted extraction unit instead of a few shop vacs. The difference in output was enormous — they pulled the water out in a fraction of the time I expected. Highly recommend calling them first."
Our Holliston-based crew serves nearby communities with the same fast, professional water removal that Holliston residents rely on.
Our Holliston Emergency Water Removal crew is on standby right now. Call +1-844-499-0972 and we'll have a team at your door in under an hour.
📞 Call +1-844-499-0972 — Holliston Emergency Dispatch24/7 Live Dispatch · All Water Categories · Upfront Pricing · Holliston, MA