Illegal Dumping in Colorado: Fines and Federal Penalties

Illegal dumping in Colorado carries fines and penalties that scale sharply with what you dumped and how much damage it caused. Ordinary littering is a civil infraction starting at $20 to $500 for a first offense. Dumping that damages property can be charged as criminal mischief, up to and including a felony. Hazardous waste violations are in a different league altogether, with state civil penalties reaching $25,000 per day and federal penalties climbing higher still.

Fines for Ordinary Littering

Under C.R.S. 18-4-511, it is illegal to deposit, throw, or leave litter on any public or private property or in any body of water. The statute defines litter broadly: rubbish, waste, refuse, garbage, trash, and debris, solid or liquid, of every size. Construction debris on a vacant lot, tires on a roadside, appliances dumped on rural land, motor oil poured on the ground — all of it qualifies. There is no exception for biodegradable material.¹

Littering is classified as a civil infraction, and the fines are mandatory. They rise with each conviction:

First conviction: $20 to $500
Second conviction: $50 to $1,000
Third or subsequent conviction: $100 to $1,000

Since January 1, 2020, those ranges have been adjusted annually for inflation using the Consumer Price Index for the Denver-Aurora-Lakewood area, so current amounts run somewhat higher than the base figures in the statute.¹

You have an affirmative defense only if the site is a legally designated disposal area, the litter goes into an installed receptacle, or you own the property (or have the owner’s written consent).¹

Counties and cities have their own authority on top of the state statute. Colorado counties can compel removal of rubbish, trash, junk, and garbage from lots and tracts of land, and many impose local fines. Denver prohibits dumping in alleys, vacant lots, and public spaces, and code enforcement can issue separate citations and administrative fees. Local governments can also bill offenders for cleanup and place a lien on property to recover those costs.

When Dumping Becomes a Criminal Charge

Ordinary littering is civil. Dumping that damages someone’s property, or that involves hazardous material, can be charged criminally under separate statutes.

Criminal Mischief

When illegal dumping damages another person’s property or land, prosecutors can file criminal mischief charges under C.R.S. 18-4-501. The class of offense turns on the dollar value of the damage, and environmental cleanup costs count toward the total:

Petty offense: damage under $300
Class 2 misdemeanor: $300 to $999
Class 1 misdemeanor: $1,000 to $1,999
Class 6 felony: $2,000 to $4,999
Class 5 felony: $5,000 to $19,999
Class 4 felony: $20,000 to $99,999
Class 3 felony: $100,000 to $999,999
Class 2 felony: $1 million or more

Because remediation is included in the damage figure, a single dumping incident can cross into felony territory quickly. A contractor who dumps construction debris on conservation land can face a felony if cleanup pushes the total past $2,000. Courts can also order restitution, requiring the offender to reimburse cleanup expenses in full.²

Hazardous Waste Crimes

Dumping hazardous material triggers a harsher statute. Under C.R.S. 18-13-112, intentionally spilling hazardous waste is a class 4 felony, and abandoning hazardous waste also carries felony consequences. These charges cover industrial chemicals, asbestos, medical waste, contaminated solvents, and similar substances that are dangerous and expensive to remediate.³

Hazardous Waste Penalties From CDPHE

Separate from criminal charges, the Colorado Department of Public Health and Environment enforces the state’s Hazardous Waste Management Act through administrative and civil actions. The numbers dwarf the littering statute:

Administrative penalties: up to $15,000 per day per violation
Civil penalties in district court: up to $25,000 per day per violation

CDPHE cannot impose both an administrative and a civil penalty for the same violation, but it can refer the case for criminal prosecution on top of either one.⁴

Infectious waste has its own structure. A first offense involving infectious waste can bring a civil penalty of up to $3,000 per day, capped at $15,000 total, assessed by a court in an action brought by CDPHE.⁵

The per-day structure is what surprises people. A dump site that sits unaddressed for weeks can generate a penalty running into six figures before the arithmetic becomes obvious.

Federal Penalties That Can Stack On Top

State charges do not preclude federal ones. Several federal statutes create independent liability, especially when waterways or hazardous substances are involved.

The Resource Conservation and Recovery Act flatly prohibits open dumping of solid or hazardous waste anywhere in the United States and can be enforced through EPA action or citizen suits.⁶ The current inflation-adjusted maximum civil penalty under RCRA reaches $74,943 per day for certain offenses and $124,426 per day for others.⁷

Dumping into rivers, streams, lakes, or wetlands can violate the Clean Water Act. Discharging pollutants from an identifiable source into waters of the United States without a permit violates the National Pollutant Discharge Elimination System program. EPA administrative penalties reach $27,378 per day, and judicial penalties can reach $68,445 per day.⁷ Under Section 404 of the Clean Water Act, unauthorized disposal of fill material or waste into jurisdictional waters exposes offenders to both civil and criminal enforcement, with the EPA and the Army Corps of Engineers sharing authority.⁸

The EPA treats knowing violations of federal environmental statutes as felonies, not misdemeanors. An intentional decision to dump pollutants into a river without a permit qualifies as a knowing violation and a federal felony. That standard applies across all the major federal environmental statutes except the toxic substances and pesticide laws.⁹

Other Costs Beyond the Fine

The listed penalty is rarely the whole bill. Restitution orders can require an offender to pay the full cost of cleanup, and those costs are often the largest single figure in the case. Local governments can lien property to recover cleanup expenses. And equipment used in the dumping is itself at risk.

Colorado’s Contraband Forfeiture Act allows law enforcement to seize vehicles and personal property used in qualifying criminal offenses. Under C.R.S. 16-13-504, any vehicle or personal property connected to acts listed in C.R.S. 16-13-503 can be treated as contraband and seized on probable cause.¹⁰ Large-scale dumping operations using trucks, trailers, or heavy machinery are the most likely forfeiture targets. Cases proceed through civil court, and if the government prevails, seized assets can be auctioned, with proceeds often directed toward environmental cleanup.

Federal forfeiture protections offer some cover for uninvolved owners. Under the Civil Asset Forfeiture Reform Act, an owner whose property was used without their knowledge can raise an innocent owner defense by showing they either did not know about the illegal conduct or took reasonable steps to stop it once they did, such as notifying law enforcement and revoking permission to use the property.¹¹

If Someone Dumps on Your Land

One boundary worth flagging: penalties can reach the property owner even when someone else did the dumping. Colorado defines solid waste broadly, and disposal outside an approved site violates state rules. Landowners who let waste remain on their property can face enforcement from CDPHE or local authorities.

Federal law goes further. Under CERCLA (Superfund), current property owners can be liable for hazardous contamination on their land regardless of who caused it. To avoid that liability, a buyer generally has to qualify as an innocent landowner or a bona fide prospective purchaser. The innocent landowner defense requires conducting All Appropriate Inquiries before purchase, including a professional environmental assessment completed within one year of acquisition, with certain steps (interviewing past owners, searching for cleanup liens, reviewing government records, visual inspection) completed within 180 days before the purchase date.¹² A bona fide prospective purchaser must show that all hazardous waste disposal predated their acquisition, that they conducted appropriate inquiries, that they provide required notices about any discovered contamination, and that they take reasonable steps to stop continuing releases, cooperate with response actions, and comply with land use restrictions tied to cleanup.¹³

For anyone buying rural property or land near industrial operations, an environmental site assessment is the safeguard against inheriting a cleanup bill.p>

1
Justia. Colorado Revised Statutes Title 18 Criminal Code 18-4-511 – Littering of Public or Private Property
2
Justia. Colorado Revised Statutes Title 18 Criminal Code 18-4-501 – Criminal Mischief
3
Justia. Colorado Revised Statutes Title 18 Criminal Code 18-13-112 – Hazardous Waste
4
Justia. Colorado Revised Statutes Title 25 Environmental Control 25-15-309 – Administrative and Civil Penalties
5
Justia. Colorado Revised Statutes Title 25 Environmental Control 25-15-406 – Penalty
6
Office of the Law Revision Counsel. 42 U.S. Code 6945 – Upgrading of Open Dumps
7
eCFR. Part 19 Adjustment of Civil Monetary Penalties for Inflation
8
US EPA. Enforcement Under CWA Section 404
9
US EPA. Basic Information on Enforcement
10
Justia. Colorado Revised Statutes 16-13-504 – Forfeiture of Vehicle, Fixtures and Contents of Building, Personal Property, or Contraband Article
11
Office of the Law Revision Counsel. 18 U.S. Code 983 – General Rules for Civil Forfeiture Proceedings
12
eCFR. 40 CFR Part 312 – Innocent Landowners, Standards for Conducting All Appropriate Inquiries
13
Legal Information Institute (LII) / Cornell Law School. 42 USC 9601(40) – Bona Fide Prospective Purchaser