Is my landlord allowed to split the building's water bill evenly among all tenants?

Only if your lease authorizes pro-rata utility allocation. If your lease requires direct metering or usage-based billing, a flat allocation is a violation. Dental practices typically consume 2–4x more water per square foot than standard office tenants, so sub-metering almost always benefits other tenants, and the dental practice should be paying its actual share.

Who is responsible for the amalgam separator required by EPA regulations?

Under most leases, equipment required by a tenant's specific business operations, including dental amalgam separators mandated by EPA 40 CFR Part 441, is the tenant's responsibility. However, if the landlord is billing separator maintenance as a common janitorial cost, that is an improper pass-through. Review your lease's excluded services list.

Is my landlord allowed to split the building's water bill evenly among all tenants?

Only if your lease authorizes pro-rata utility allocation. If your lease requires direct metering or usage-based billing, a flat allocation is a violation. Dental practices typically consume 2–4x more water per square foot than standard office tenants, so sub-metering almost always benefits other tenants, and the dental practice should be paying its actual share.

Who is responsible for the amalgam separator required by EPA regulations?

Under most leases, equipment required by a tenant's specific business operations, including dental amalgam separators mandated by EPA 40 CFR Part 441, is the tenant's responsibility. However, if the landlord is billing separator maintenance as a common janitorial cost, that is an improper pass-through. Review your lease's excluded services list.

CAM Audit for Dental Offices

Dental practices ranging from single-practitioner offices to multi-chair group practices. High water consumption for sterilization and patient care creates outsized utility exposure relative to square footage. Annual CAM exposure for this tenant type ranges up to $8,000–$40,000. CamAudit runs 12 forensic detection rules specific to your lease structure in under five minutes.

Typical Lease Structure

Modified Gross or NNN

Avg. Locations

1–10

Annual CAM Exposure

$8,000–$40,000

Lease Structure

Modified Gross or NNN, tenant pays a base rent plus utilities and CAM escalations. Water and plumbing costs are frequently passed through directly given the dental practice's above-average consumption.

CAM Vulnerabilities for Dental Offices

Landlords aggregate water bills across the building and allocate on a pro-rata square footage basis, causing low-consumption tenants to subsidize the dental practice's heavy usage, and vice versa in buildings where the dental tenant is being charged for the aggregate. Specialty plumbing and amalgam separator maintenance costs are sometimes buried in common-area maintenance line items.

Most Common Overcharges

1Water utility billed on pro-rata basis without sub-metering, causing cross-subsidization
2Amalgam separator and dental waste disposal billed as common janitorial
3Plumbing repairs for dental-specific infrastructure charged to common CAM pool
4ADA compliance pass-throughs for building upgrades unrelated to the dental suite
5Management fee applied to utility pass-throughs excluded from the fee base under the lease

Watch For This Trigger

A year-end utility true-up bill arrives showing that the building's aggregate water cost was allocated without sub-metering, resulting in a large unexpected balance.

Detect Overcharges in Your Dental Office Lease

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Precedent & Case Context

Dental tenants in multi-use medical buildings have recovered significant overcharges by demonstrating that water utility allocation without sub-metering violated lease provisions requiring direct measurement for variable utility expenses.

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Related Resources

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Frequently asked questions

This page provides general educational information. It is not legal advice and may not reflect the most current law in your state. Consult a licensed attorney for advice specific to your situation.