Animal Waste Disposal Laws in Maryland: Manure, Carcasses, and CAFO Rules Explained
October 7, 2026
If you keep livestock, poultry, or horses in Maryland, animal waste disposal laws touch nearly everything you do on the farm — from how long manure can sit in a pile to how quickly you must bury a carcass. These rules come from two state agencies working in tandem, and they carry real financial consequences for anyone who ignores them. This article walks through what Maryland requires for manure, dead-animal disposal, water protection, and large-operation permitting, so you know exactly where you stand.
Whether you own a few backyard hens or run a permitted animal feeding operation, the same underlying goal drives every regulation: keeping the Chesapeake Bay and Maryland’s groundwater free of excess nutrients and pathogens.
What Maryland Requires for Livestock Waste and Dead-Animal Disposal
Maryland treats manure and dead-animal disposal as two separate but connected obligations. If you produce animal manure as part of raising livestock or poultry, you generally need a written nutrient management plan that governs how you store, stockpile, and apply that waste. If you raise animals such as goats, cattle, sheep, or horses, you’re also responsible for what happens when one of them dies.
Small-scale livestock keepers are not exempt just because their operation is modest. If you’re weighing whether to add a few animals to your property, it’s worth reviewing Maryland’s goat ownership rules alongside these waste requirements, since manure management obligations typically apply regardless of herd size once you’re producing agricultural waste on the land.
Poultry keepers face similar expectations. Anyone raising birds under Maryland’s backyard chicken laws should know that poultry litter — the fecal and urinary waste mixed with bedding material — falls under the same broad nutrient management framework as larger livestock manure once it’s applied to land.
Pro Tip: Even hobby farms with a handful of animals should keep basic manure records. If your operation ever grows into permit territory, having a documented history makes the transition to a formal nutrient management plan far smoother.
For dead-animal disposal, Maryland law is direct: it is required that the owner of a dead animal shall dispose of the animal at the owner’s expense, and a person may not place, leave, or cause another person to place or leave the carcass of a dead animal in a street, alley, or on public property. You also cannot allow the carcass of a dead animal to remain on your own property, a standard that applies across species, including horses.
Manure Storage, Stockpiling, and Land-Application Rules in Maryland
Once manure is generated, Maryland regulates where it sits and how long it stays there before it moves to a field. You must inject or incorporate manure, biosolids, and other organic nutrient sources into the soil within 48 hours of application, though exceptions exist for no-till farming systems, spray irrigation on a growing crop, permanent pastures, hay production fields, and highly erodible fields.
Timing restrictions also apply to when you can spread manure at all. Winter application of chemical fertilizer, and nutrient applications generally, are prohibited from December 16 through the last calendar day of February, with narrow exceptions for green-up of perennial forage crops, small grains, greenhouse production, cool-season grass sod, and vegetable or fruit production following University of Maryland recommendations.
Fall applications carry their own guardrails. Fall application of nitrogen is prohibited on small grains if a fall nitrate test indicates levels greater than 10 parts per million for wheat or 15 parts per million for barley, and cover crops must be planted when organic nutrient sources are applied in fall.
Important Note: A separate industry fact sheet cites a slightly different winter application window (December 18 through February 28) rather than December 16. Because these dates can shift with regulatory updates, always confirm the current calendar with your county nutrient management specialist before scheduling application.
Broader program guidance backs up why these windows exist. Maryland’s Nutrient Management Program protects water quality in the Chesapeake Bay and its tributaries by ensuring that farmers and urban land managers apply fertilizers, animal manure, and other nutrient sources in an effective and environmentally sound manner, with plans that specify how much fertilizer, manure, or other nutrient source may be safely applied to crops. You can review the underlying framework directly through the Maryland Department of Agriculture’s nutrient management guidance.
How You Must Dispose of Dead Livestock Carcasses in Maryland
Maryland’s core statute on this topic is specific and stems from disease-control concerns. Under state law, the owner of any domestic animal that has died of a contagious or infectious disease shall bury it to a depth of at least three feet or burn it within three hours before sunset of the day following the discovery of the animal. That deadline exists because delayed disposal raises the risk of spreading disease to other livestock and wildlife.
For horses specifically, University of Maryland Extension guidance puts a tighter number on general disposal. Maryland law requires disposal of a deceased equine within 48 hours of its death, and if an owner or manager does not dispose of a carcass properly, the Maryland Health Department will become involved.
Important Note: Some third-party summaries cite a 72-hour general removal window for dead livestock rather than 48 hours, with immediate action required for disease-related deaths. Given this variation across sources, treat 48 hours as the safer benchmark for planning and confirm your specific timeline with MDA.
In practice, Maryland livestock owners typically choose from a handful of accepted disposal methods:
- On-farm burial at the depth required by state and local code, away from wells and waterways.
- Composting, following University of Maryland Extension protocols for large-animal mortality.
- Rendering through a licensed facility that collects carcasses for processing.
- Incineration or burning, where permitted, within the statutory timeframe for disease-related deaths.
- Transport to an approved disposal site — though not every landfill accepts carcasses; some, like the St. Mary’s County facility referenced in county disposal summaries, specifically prohibit animal carcasses from being accepted at the site for disposal.
Wild cervids add another layer. If a hunter brings a deer carcass into Maryland from a Chronic Wasting Disease area, a person may import and possess any part of a dead cervid from a CWD positive area or a CWD management area if the dead cervid carcass or part does not remain in the State for longer than 24 hours, per COMAR 08.03.04.22. This matters for anyone processing white-tailed deer (Odocoileus virginianus) taken during Maryland’s hunting seasons, a topic covered in more depth in Maryland’s general hunting laws.
Local animal control typically won’t help with farm animals. Baltimore County’s dead-animal pickup program, for example, does not include dead livestock or farm animals, meaning livestock owners must arrange private disposal rather than relying on county services designed for pets and small wildlife.
Which Agency Regulates Manure and Carcass Disposal in Maryland
Two state agencies split responsibility, and understanding which one to call saves considerable frustration. The Maryland Department of Agriculture (MDA) administers the Nutrient Management Program, certifies the planners who write nutrient management plans, and enforces plans written by a nutrient management planner certified by the MDA that meet all requirements of COMAR 15.20.07 and 15.20.08.
The Maryland Department of the Environment (MDE) takes the water-quality side. MDE’s Land and Materials Administration issues the general discharge permits that govern Animal Feeding Operations, and it’s the agency that steps in when manure handling threatens surface water or groundwater. This division of labor resembles how other Maryland licensing structures work — MDA oversees agricultural production standards much like it intersects with Maryland’s dog breeding laws on the commercial-animal side, while environmental agencies handle discharge and pollution concerns separately.
County government also plays a role, particularly for dead-animal disposal. Baltimore County, St. Mary’s County, and Anne Arundel County each maintain their own local carcass-disposal ordinances layered on top of state law, so a rule that applies in one jurisdiction may look slightly different next door. Montgomery County’s animal services division, for instance, removes dead domestic animals and larger wild animals from county roads and nearby private property, including raccoons, groundhogs, and deer, but not livestock — reinforcing that farm-animal disposal remains the owner’s responsibility statewide.
Water Setbacks, Groundwater Protections, and Health Standards in Maryland
Setback distances form the backbone of Maryland’s water protection strategy for manure. A minimum 10-foot setback is required for all nutrient applications adjacent to surface waters and streams, and a 35-foot setback is required when using broadcast fertilizer application methods. Within that buffer zone, land use is restricted: only pasture and hay may be grown on the 10-foot setback area, while the remaining 25-foot setback may have crops but may not be fertilized.
| Setback Type | Required Distance | Key Restriction |
|---|---|---|
| General nutrient application near surface water | 10 feet | Only pasture or hay permitted in the zone |
| Broadcast fertilizer application | 35 feet | Remaining 25 feet may hold unfertilized crops |
| Livestock sacrifice lots | 35 feet from surface water | Livestock excluded from the buffer area |
| Pastures and hayfields | 10 feet | Livestock not allowed in the setback area |
Livestock exclusion is a related piece of the puzzle. Livestock are not allowed in the setback area, livestock stream protection practices are required, and livestock sacrifice lots require a 35-foot setback from surface water. These rules exist specifically to keep manure and animal traffic away from waterways that feed into the Chesapeake Bay watershed.
Important Note: A 2025 stakeholder letter to MDE recommended expanding buffer requirements, urging regulators to increase setback distances to 300 feet and require that all solid stockpiles be underlain by a tarp. This is a proposed change, not current law — confirm active setback requirements with MDE before assuming any expanded distance applies to your operation.
Health standards intersect with these environmental rules whenever disposal goes wrong. As noted earlier, improperly disposed carcasses can trigger direct involvement from the Maryland Health Department, while contaminated runoff from manure violations falls under MDE’s Clean Water Act enforcement authority rather than a local health inspector’s jurisdiction.
CAFO and Nutrient Management Plan Requirements in Maryland
Larger operations face a more formal permitting structure. Maryland recognizes two categories of regulated animal feeding operations, and the distinction matters for what paperwork you owe the state.
| Designation | Definition | Regulatory Basis |
|---|---|---|
| CAFO | An AFO meeting specific size thresholds set by EPA and MDE | Federal Clean Water Act, more stringent requirements |
| MAFO | Doesn’t meet federal CAFO size but has similar nutrient runoff potential | Regulated by the State of Maryland, similar permit coverage to CAFOs |
Animal feeding facilities are regulated through a general discharge permit, and farms that meet the criteria must apply for coverage by submitting a Notice of Intent (NOI) and a Nutrient Management Plan that demonstrates how manure and processed wastewater are properly stored, handled, and applied to land. You can review the full definitions on MDE’s Animal Feeding Operations page.
The plan itself has to be comprehensive. Required plans for both CAFOs and MAFOs must address all production and land application areas associated with animal manure, chicken litter, and process wastewater, ensuring that appropriate manure management measures are used to store, stockpile, and handle animal manure and waste nutrients to minimize the potential for nutrient loss or runoff.
Pro Tip: If your farm generates more manure than your cropland can absorb, Maryland’s Manure Transport Program can help. Payments of up to $22.50 per ton are available to move manure from high-phosphorus fields to farms that need it or to alternative-use facilities, easing pressure on land application limits.
Record-keeping obligations scale with your operation type. CAFO and MAFO operations under an MDE general discharge permit that export all manure keep one set of records, while operations that also farm cropland and apply manure or nutrients to land under their control must keep an additional set covering land application activities. Poultry operations should note that the permit specifically covers poultry litter, meaning the fecal and urinary excretion of poultry, including poultry litter and materials used as bedding that has come in contact with poultry — relevant background for anyone managing flocks under Maryland’s rooster ownership laws at a larger commercial scale.
Penalties for Illegal Dumping, Missed Carcass Deadlines, and Water Violations in Maryland
Consequences for violating these rules vary by what went wrong and which agency catches it. On the carcass side, older local codes set specific fines — a Baltimore County ordinance dating to 1908 set a $20 penalty per offense plus the cost of burial or removal for illegally depositing a carcass. That figure is historic and almost certainly outdated as a practical deterrent; check current Baltimore County code for the modern penalty schedule rather than relying on that older figure.
Missed carcass deadlines carry a more immediate consequence than a fine: county health department intervention. If a carcass isn’t disposed of in the required window, expect a health official to get involved directly, which can mean mandated professional removal at the owner’s expense on top of any citation.
Water quality violations tend to draw the most serious enforcement. A well-documented Maryland case illustrates the stakes: the Maryland Department of the Environment ordered an animal rendering and recycling company to cease operations at its Linkwood, Maryland facility after exceeding local wastewater discharge permit limits, having consistently dumped illegal amounts of fecal bacteria, ammonia, and phosphorus into the Transquaking River, exceeding ammonia pollution limits 25 times during one summer alone. You can read more about the incident on the Transquaking River’s Wikipedia entry.
Common Mistake: Assuming a single missed inspection or one late land application won’t draw scrutiny. MDE’s permit framework requires ongoing compliance, and repeated violations — not just one-off incidents — are what typically escalate from a warning to a cease-operations order or civil penalty referral.
Illegal dumping of carcasses or manure on public land, in waterways, or along roadsides carries its own risk profile, and it overlaps with rules covered under Maryland’s roadkill laws when dead wildlife or improperly disposed farm animals end up on public roads. Hunters processing game at home should also review Maryland’s duck hunting regulations for carcass and offal disposal expectations that mirror the livestock standards described above.
How to Confirm Current Maryland Animal-Waste Rules With the Agencies
Given how often setback distances, application windows, and permit thresholds get revisited, the smartest move is to verify directly with the agencies rather than relying solely on secondhand summaries — including this one. Start with these steps:
- Call MDA directly at 410-841-5700 for questions on nutrient management plans, carcass disposal, or general livestock waste rules, as recommended by University of Maryland Extension’s equine disposal guidance.
- Check MDE’s Animal Feeding Operations program page before assuming your CAFO or MAFO status, since size thresholds and permit terms are reviewed periodically.
- Contact your county government — Baltimore County, St. Mary’s County, and others maintain separate carcass and dumping ordinances that can be stricter than the state baseline.
- Review MDA’s nutrient management program page for the current version of application windows and setback requirements each planning season.
- Ask about county-specific permits if you’re expanding a livestock operation, since local zoning can add requirements beyond state agricultural rules, similar to how local ordinances shape Maryland’s rooster crowing restrictions at the municipal level.
Anyone importing animals into Maryland to expand a herd or flock should also cross-check Maryland’s pet and animal import laws, since incoming livestock can carry separate health-certificate and quarantine obligations that intersect with waste and disease-control rules. And if your operation involves any commercial breeding alongside livestock, reviewing Maryland’s puppy mill laws offers a useful comparison for how the state structures inspection and permitting across different animal industries.
Maryland’s animal waste framework changes incrementally almost every year, whether through updated nutrient management windows, revised CAFO thresholds, or new stakeholder-driven proposals like the expanded setback recommendation discussed earlier. Building a habit of checking MDA and MDE directly each planning season is the most reliable way to stay compliant and avoid the penalties outlined above.