Riverside, California · Inland Empire

Commercial cleaning in
Riverside.

Janitorial programs and specialized facility services for Riverside businesses — scheduled around your operation, scoped in writing before work starts.

Request a walkthrough 909-750-2614

Also serving
Moreno Valley
Jurupa Valley
Corona
Colton
Redlands

Riverside carries the region's deepest stock of institutional and civic buildings alongside its commercial corridors — which means terrazzo, natural stone and older hard-floor systems that reward restoration over replacement.

Nexara is based in the Inland Empire, which means a walkthrough in Riverside is a short drive rather than a scheduling problem — and so is showing up when something needs attention between scheduled visits.

Who are Riverside's largest employers, and what does that mean for the building stock?

Riverside's FY2024 financial report lists the County of Riverside (25,300 employees), March Air Force Reserve Base (9,750) and UC Riverside (9,316) as the city's three largest employers, followed by Kaiser Permanente, Riverside University Health System and Riverside Unified School District. Government, higher education and healthcare — not private-sector office tenants — anchor most of the city's largest buildings.

Riverside principal employers, FY2024 (City of Riverside ACFR)

County of Riverside
Employees
25,300
Sector
County government
March Air Force Reserve
Employees
9,750
Sector
Federal/military
University of California, Riverside
Employees
9,316
Sector
Higher education
Kaiser Permanente
Employees
7,420
Sector
Healthcare
Riverside University Health System
Employees
7,355
Sector
Healthcare
Riverside Unified School District
Employees
4,596
Sector
K-12 education
Riverside Community Hospital
Employees
2,958
Sector
Healthcare
City of Riverside
Employees
2,709
Sector
Municipal government
Riverside Community College District
Employees
2,300
Sector
Higher education
Alvord Unified School District
Employees
1,955
Sector
K-12 education

Riverside principal employers, FY2024 (City of Riverside ACFR)
Employer	Employees	Sector
County of Riverside	25,300	County government
March Air Force Reserve	9,750	Federal/military
University of California, Riverside	9,316	Higher education
Kaiser Permanente	7,420	Healthcare
Riverside University Health System	7,355	Healthcare
Riverside Unified School District	4,596	K-12 education
Riverside Community Hospital	2,958	Healthcare
City of Riverside	2,709	Municipal government
Riverside Community College District	2,300	Higher education
Alvord Unified School District	1,955	K-12 education

That concentration of government, hospital and campus employers means Riverside carries an unusually large stock of publicly accountable buildings — county administration, university halls, hospital wings, school and college campuses — each of which typically requires a documented scope of work and inspection standard as a matter of institutional process, not just good practice.

Why does Riverside's downtown and civic building stock need a different floor program?

Downtown Riverside is the county seat and holds a large stock of older civic and institutional buildings, planned under the city's 2024 Downtown Specific Plan. Where those buildings still have terrazzo or natural stone lobbies and corridors, the floors call for honing and polishing rather than the strip-and-recoat treatment used on VCT.

Stripping and recoating a terrazzo or natural stone floor the way a VCT corridor would be treated can dull or damage the surface permanently. See stone and concrete polishing for how older hard-floor systems are restored rather than replaced. The first step on any older building is identifying what the floor actually is before choosing a method.

What does a cleaning program emphasize across Riverside's building types?

Downtown civic and historic buildings need stone and terrazzo restoration rather than aggressive stripping; hospital and university-adjacent buildings run on continuous or near-continuous schedules; and school district administrative buildings, like the rest of the city's public institutions, need a written scope tied to a documented inspection standard.

Riverside building type → what the program emphasizes

Downtown civic/historic (terrazzo, natural stone)
What the program emphasizes
Restoration-grade stone and concrete polishing, not strip-and-recoat
Hospital-adjacent and healthcare office
What the program emphasizes
Continuous-schedule janitorial, high-touch disinfection frequency
University-adjacent office and lab support
What the program emphasizes
Common-area and corridor upkeep tied to academic-term traffic
School and college district administrative buildings
What the program emphasizes
Written scope, documented inspection standard

Riverside building type → what the program emphasizes
Building type	What the program emphasizes
Downtown civic/historic (terrazzo, natural stone)	Restoration-grade stone and concrete polishing, not strip-and-recoat
Hospital-adjacent and healthcare office	Continuous-schedule janitorial, high-touch disinfection frequency
University-adjacent office and lab support	Common-area and corridor upkeep tied to academic-term traffic
School and college district administrative buildings	Written scope, documented inspection standard

How big is Riverside compared to the other cities Nexara serves?

Riverside's 2020 Census population of 314,998 makes it by far the largest of the five cities in Nexara's home service area — about 1.5 times Fontana's, the next largest. The Census Bureau estimates 323,057 residents as of July 1, 2025, a 2.6% increase, on 81.23 square miles of land, or about 3,878 people per square mile in 2020.

A city this size carries proportionally more of every building type — more schools, more hospital square footage, more civic buildings — which is part of why Riverside's principal-employer list runs deeper into institutional sectors than Ontario's or Fontana's logistics-heavy lists.

How hard is Riverside's water, and does it affect glass and floor work?

Riverside Public Utilities' 2024 water quality report puts hardness at 194 mg/L, or about 11 grains per gallon, within a typical range of 180–210 mg/L. That's hard enough to leave spotting on glass and mineral film on hard floors faster than soft water, particularly on the natural stone and terrazzo common in Riverside's older buildings.

On porous stone, hard-water residue is harder to remove after it sets than on sealed VCT — another reason restoration-focused floor care matters more here. See window cleaning and stone and concrete polishing.

What are the stormwater rules for pressure washing in Riverside?

Riverside operates under the Santa Ana Regional Water Quality Control Board's Riverside County MS4 permit (Order No. R8-2010-0033), which requires its cities to prohibit or control water from cleaning parking lots, sidewalks, driveways, patios, plazas, work yards and outdoor eating areas, along with wash water from pressure cleaning.

That covers civic plazas, hospital and university loading areas, and retail sidewalks alike. Pressure washing scoped for Riverside accounts for containing or filtering that runoff rather than just moving soil off the surface.

Questions

Riverside facility questions.

Do you work on terrazzo and natural stone floors in Riverside's older buildings?

Yes — terrazzo and natural stone are honed and polished rather than stripped and recoated. Stripping chemistry and methods built for VCT can dull or damage stone, so the floor is identified first and the method chosen to match. See stone and concrete polishing.

Do you serve buildings near UC Riverside?

Yes. UC Riverside is one of the city's largest employers, and office, lab-support and administrative buildings in that part of Riverside are inside Nexara's home service area, scoped to fit around academic-term traffic patterns rather than a fixed schedule.

How hard is Riverside's tap water, and does it matter for cleaning?

Riverside Public Utilities' 2024 water quality report puts hardness at 194 mg/L, about 11 grains per gallon, within a 180–210 mg/L range. That level leaves mineral spotting on glass and residue on hard floors faster than soft water — a bigger concern on porous natural stone than on sealed modern flooring.

Can you clean hospital-adjacent facilities in Riverside?

Yes, within the scope defined for that account. Kaiser Permanente (7,420 employees) and Riverside University Health System (7,355) are among the city's largest employers, and the medical office and support buildings around them usually need extended schedules and more frequent high-touch cleaning than a standard office.

Is pressure washing a civic plaza or sidewalk in Riverside restricted?

Yes. The Riverside County MS4 permit requires the city to prohibit or control water from cleaning parking lots, sidewalks, plazas and outdoor work areas reaching the storm drain system. See pressure washing for how that containment requirement is handled.

How does Riverside's size compare to the other cities you serve?

Riverside is the largest of Nexara's five service-area cities by population — 314,998 at the 2020 Census, about 1.5 times Fontana's count. That scale means proportionally more school, hospital and civic building square footage than the other four cities.

Do you serve school district administrative buildings in Riverside?

Yes. Riverside Unified and Alvord Unified are both among the city's ten largest employers, and their administrative and campus buildings are scoped like any other education client — a written program tied to the academic calendar. See K-12 and education.

Sources

Reviewed by Nexara Facility Services · Updated September 23, 2026

Services in Riverside

Everything we do, locally.

Also serving

Near Riverside.

Moreno Valley
Jurupa Valley
Corona
Colton
Redlands

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Serving Riverside and the surrounding Inland Empire.

Every scope starts with a walkthrough. We look at the building, ask what is actually going wrong today, and come back with a written scope and a number — not a brochure.