Water Damage Restoration Cost in St. Clair County, MI (2026)

A St. Clair County water loss lands in one of three pricing tiers, clean water, gray water, or black water, the same tiers every Michigan county prices against, though the tier that actually shows up here is shaped by the lower St. Clair River rather than by an aging sewer grid. Marine City, East China Township, and parts of St. Clair and Marysville have a documented ice-jam flood history on that river, a different mechanism entirely from the combined-sewer backups behind most of Macomb and Oakland Counties' costliest losses. Port Huron, Marysville, St. Clair, and Marine City each get their own numbers below, along with what a Michigan homeowners policy covers for a river-driven loss versus an ordinary plumbing failure.

Water Damage Restoration Cost Bands in Michigan

Category	How it typically starts	Per sq ft	Typical room	Typical basement
Category 1, clean water	A copper or PEX line bursts, a water heater or shutoff valve fails	$3.75-$4.50	$1,200-$3,200	$2,000-$4,500
Category 2, gray water	A dishwasher or washer overflows, a sump fails, river seepage reaches a wall	$4.50-$6.75	$2,500-$4,800	$3,500-$7,500
Category 3, black water	A sewer backs up, flood water enters, water sits past 72 hours	$7.00-$12.50	$4,500-$9,000	$6,500-$15,000+

These are 2026 Michigan ranges for mitigation, not a quote. The category, the square footage, and whether the space is finished set the actual number, confirmed on-site.

St. Clair River Ice-Jam Flooding: St. Clair County's Documented Risk Pattern

The lower St. Clair River has flooded homes and roads in Marine City and East China Township in multiple recent winters when wind-driven ice piled up and blocked the river's flow, backing water up onto the shoreline:

• February 2021. The National Weather Service's Detroit/Pontiac office issued a flood warning for southeastern St. Clair County as an ice jam pushed the St. Clair River to unusually high levels, flooding homes and roads in and around Marine City and East China Township. A Michigan state of emergency was declared for the county, and both U.S. and Canadian Coast Guard icebreakers, with Army Corps of Engineers technical support, worked to break up the jam.
• Other winters. Similar ice-jam events have affected Marine City, East China Township, and Algonac in other years, with Coast Guard icebreakers deployed to break up river ice and county officials flagging ice plugs needing attention.

Unlike a sanitary-sewer backup, this kind of flooding enters a home from the outside, often through a foundation wall, window well, or low entry point near the waterline. Depending on how long the water sits and whether it carries silt or contaminants from the river, this type of loss is typically scoped as Category 2 or 3, and a homeowner should confirm with their agent whether an NFIP flood policy, rather than the standard homeowners policy, is the correct coverage to file against, since standard policies exclude rising surface water.

St. Clair County Drainage: A Different System Than Macomb or Oakland

The St. Clair County Drain Commissioner's office manages roughly 850 miles of county and intercounty drains, the large majority of them open watercourses rather than enclosed storm sewer pipe, a notably different infrastructure profile than the combined sanitary-and-storm sewer systems common in Macomb County's older inner-ring cities. Most road ditches fall separately under the St. Clair County Road Commission. The drain office publishes stormwater review rules for new development and takes resident reports of county-drain obstructions, but a backup inside a home's own sanitary lateral is a matter for the city that owns the connecting sewer main. The City of Port Huron's Department of Public Works, Utilities Division runs the city's water, wastewater, and stormwater systems under its own municipal ordinance.

Housing Age in St. Clair County's Cities

Third-party aggregators of Census American Community Survey data put Port Huron's median year built at approximately 1955, with roughly a third of the city's homes reported as built before 1940, a figure this page reports as sourced to that aggregation rather than a confirmed Census Bureau table pulled directly in this pass. Port Huron sits where the Black River meets the St. Clair River, and its older housing stock, much of it from the early-to-mid 20th century, carries the original-plumbing and original-foundation risk common to any Michigan city of that housing age: aging supply lines and drain stacks that are more likely to fail at a joint than to burst outright, producing a Category 1 or 2 loss rather than a catastrophic one, but a more frequent one over the life of the home.

Line-Item Costs Inside a Typical St. Clair County Project

Line item	Price	Note
Water extraction, per sq ft	$0.55-$2.25	Climbs on Cat 2/3 once antimicrobial pre-treatment is added
Air mover, per day	$25-$45	Jobs here usually run 6 to 12 units for 3 to 5 days
LGR dehumidifier, per day	$115-$165	Usually 1 to 3 units running alongside the air movers
Drywall removal, per sq ft	$2.25-$3.85	The bottom 24 inches on most jobs, the full wall on Cat 3
Carpet pad replacement, per sq ft	$0.65-$1.15	Never stays in place once Cat 2 or 3 water has touched it
Antimicrobial treatment, per sq ft	$0.35-$0.65	Part of every Cat 2 and Cat 3 scope
HEPA air scrubber, per day	$85-$135	Brought in for Cat 3 work and any flood-contaminated space

Worked Cost Examples for St. Clair County

Example 1: Water Heater Failure, Unfinished Basement, Port Huron

A failed water heater in an older Port Huron home flooded roughly 250 square feet of unfinished basement floor with clean water. This is a Category 1 loss, $2,000-$4,500: extraction, drying with air movers and a dehumidifier over 3 to 5 days, and removal of saturated drywall at the base of the walls.

Example 2: Ice-Jam River Flooding, Marine City

St. Clair River ice-jam flooding, the pattern documented in the February 2021 event, pushed river water into a Marine City home's lower level through a foundation wall, affecting roughly 300 square feet. Depending on how long the water sat, this is typically a Category 2 or 3 loss, $3,500-$15,000: extraction, removal of affected drywall and flooring, antimicrobial treatment, and drying before rebuild. A separate NFIP flood policy, where one exists, may be the correct coverage for the portion of the loss caused by river water entering from outside the foundation.

Example 3: Original Cast-Iron Stack Failure, Port Huron

A joint failure in an original cast-iron drain stack in a 1940s Port Huron home let gray water leak into a first-floor bathroom subfloor, affecting roughly 150 square feet. This is a Category 2 loss, $2,500-$4,800 at the room level: extraction, subfloor removal, antimicrobial treatment, and drying ahead of the plumbing repair.

Example 4: Sewer Backup, Marysville

A municipal sewer backup pushed contaminated water into a Marysville home's basement floor drain, affecting roughly 350 square feet. This is a Category 3 loss, $6,500-$15,000-plus at the basement level: full containment and PPE for the crew, removal and regulated disposal of every porous material the sewage touched, and decontamination before rebuild.

Does Insurance Cover Water Damage Restoration in St. Clair County?

A homeowners policy pays for the sudden kind of water damage without argument: a pipe that bursts, a water heater that fails. River water is a separate conversation entirely, because a standard policy treats anything rising from outside the foundation as flood, which it excludes unless NFIP coverage sits underneath it. Sewage coming back up through a drain is a third category, paid only if a sewer and drain backup endorsement, $40-$150 a year, was already in force. For a Marine City, East China Township, St. Clair, or Marysville homeowner, knowing which of those three a given loss actually is matters more here than almost anywhere else in Michigan, since the river touches all three possibilities in a single corridor. The carrier, not this page, makes that call after inspecting the loss.

What Goes Into a St. Clair County Water Loss File

A St. Clair County estimate is only as useful as the facts it names. It should state which water category applies and how that call was made, not just assumed. It should break the affected area down room by room rather than giving one square-footage figure for the whole loss, since a basement and a main-floor bathroom dry on different timelines. It should say plainly whether the space is finished and what finished material is coming out as a result. The drying plan should list a specific number of air movers and dehumidifiers and a specific number of days, not "as needed." And it should separate reconstruction, with its own timeline, from the mitigation total rather than folding both into one number.

Why St. Clair County Water Damage Restoration Costs What It Does

The price reflects three things most homeowners underestimate: equipment, time, and specialized labor, the same three drivers that set pricing statewide. A single structural drying project uses 6 to 12 commercial air movers and 1 to 3 LGR dehumidifiers running around the clock for 3 to 5 days, and each machine runs $25 to $165 per day on the line-item price list above. Trained technicians return daily to remap moisture content with a meter, not a visual check, and adjust equipment placement toward the drying goal. On a river-flood or ice-jam loss, add the time it takes silt and debris to be cleared from the affected area before drying equipment can even be placed, which is a step a simple supply-line leak never requires. Skipping steps to save money, such as drying around wet insulation instead of removing it, almost always leads to secondary mold damage that costs several times more to fix later, which is why a written scope documents each step rather than quoting a single lump figure.

Reporting a Loss: Who to Call First in St. Clair County

Because St. Clair County splits responsibility between the county drain office, each city's own public works department, and, for river-adjacent losses, FEMA flood insurance rather than a standard homeowners policy, the first call after discovering water damage should go to a restoration company that can help identify which of those paths applies, not only to the agency itself. A company that routinely works St. Clair County losses knows that a Port Huron sanitary backup is a city public works matter, a county-drain obstruction is a Water Resources matter, and a St. Clair River ice-jam flood is most often a homeowners-policy or NFIP matter depending on how the water entered the structure. Getting that identification right on day one avoids a claim being filed with the wrong party and delayed by weeks while it gets redirected.

How Prime Restoration Works a St. Clair County Job

Prime has run as a family Michigan restoration business since 1988, and its closest offices to St. Clair County sit across the line in Macomb County, dispatching 24/7 rather than promising a specific arrival window the way the closer counties get. The visit that starts the job still works the same way everywhere Prime goes: category gets set on-site, square footage gets measured, finish level gets checked, and all of it lands in a written Xactimate scope before any equipment comes off the truck.

How Many Flood Claims Has St. Clair County Filed? The FEMA Numbers

The OpenFEMA NfipClaims dataset, pulled 2026-11-03, shows a St. Clair County flood claim history that is large for a county this size, consistent with its position on the St. Clair River:

Metric	St. Clair County figure
Total NFIP flood claims on record	1,184
Claims that resulted in a payment	804
Median federal payout per paid claim (building + contents)	$2,251
Claims filed in 2019	143
Claims filed in 2021	44
Three heaviest claim years on record	1986 (319 claims), 1985 (252 claims), 2019 (143 claims)

A flood policy and a homeowners policy are not the same thing, and NFIP's 804 paid claims here cover river and surface-water flooding only, not the sewer backups this page also prices. Most St. Clair County homes do not carry NFIP coverage at all, so this record understates actual flood damage across the county rather than overstating it. The $2,251 median is what the federal program paid out, not what a restoration crew charges to dry and rebuild a home, and the two numbers should never be confused when a homeowner is budgeting for a loss. The 2019 spike lines up with documented high water on Lake Huron and the St. Clair River that year, a separate mechanism from the winter ice jams covered above but part of the same river-driven risk profile.

Picking a Water Damage Company in St. Clair County

• A checkable builder's license. Reconstruction work needs a Michigan Residential Builder license, and the LARA lookup tells you in thirty seconds whether the number someone gave you is real.
• Paper, not a verbal number. Dated moisture readings and a line-item estimate an adjuster can actually review, before equipment ever gets dropped.
• Someone who has actually worked a river loss here. An ice-jam claim and a plain homeowners claim route through completely different coverage, and a company new to the corridor won't know to ask which one applies.

For a statewide comparison of the same Cat 1-3 bands, see water damage restoration cost in Michigan. For neighboring counties, see the Macomb County and Oakland County cost pages.

Call Prime Restoration at (586) 277-1069 for 24/7 emergency dispatch in St. Clair County. Prime Restoration holds a 5.0-star average across 186 Google reviews and Michigan Residential Builder license #262500492.