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Rainwater harvesting in Maryland can save you money and help conserve water. Here’s what you need to know:
- Rebates Available: Up to $7,500 for residential properties in Montgomery County, $6,000 in Prince George’s County, and $5,000 in Rockville.
- Eligible Systems: Rain barrels, cisterns, rain gardens, permeable pavement, tree planting, and more.
- Key Programs:
- Montgomery County RainScapes Rewards: Highest residential rebate at $7,500, active as of June 2025.
- Prince George’s County Rain Check: $6,000 cap, but the program may pause in FY26 (July 2025–June 2026).
- Rockville RainScapes: $5,000 lifetime cap, covers smaller-scale projects.
- Pre-Approval Required: Most programs require approval before starting your project.
- Application Process: Submit plans, receipts, and schedule inspections for reimbursement.
Quick Comparison
| Feature | Prince George’s County Rain Check | Montgomery County RainScapes Rewards | Rockville RainScapes |
|---|---|---|---|
| Max Residential Rebate | $6,000 | $7,500 | $5,000 |
| Max Commercial Rebate | $20,000 | $20,000 | $5,000 |
| Program Status (Jun 2025) | Pausing FY26 | Active | Active |
| Coverage Area | Prince George’s County | Montgomery County (excluding some cities) | City of Rockville |
| Eligible Practices | Rain barrels, cisterns, rain gardens, permeable pavement, tree planting | Same as Prince George’s County | Similar but smaller scope |
Act now to take advantage of these rebates and improve water management on your property!
Major Rainwater Harvesting Rebate Programs in Maryland
In Maryland, rainwater harvesting rebates are largely managed at the county level, with each program featuring its own set of rules, rebate amounts, and eligible systems. Below is an overview of some key programs and local initiatives.
Prince George’s County Rain Check Rebate Program
Prince George’s County offers one of the most extensive rainwater harvesting rebate programs in Maryland. Funded by the county’s Clean Water Act Fee, this program had an annual budget of about $260,000 in FY25 [4]. Applications for the program closed on April 5, 2025, and it is scheduled to pause during FY26 (July 1, 2025 – June 30, 2026) [4].
For homeowners, the program provided a lifetime rebate cap of $6,000. Commercial, industrial, and institutional properties could qualify for up to $20,000 [4]. Rebates were available for a variety of stormwater practices, with specific rates outlined in the table below:
| Practice | Residential Rate | Commercial/Institutional Rate | Minimum Requirements |
|---|---|---|---|
| Rain Barrels | $2 per gallon | $2 per gallon | 50 gallons (residential); 100 gallons (commercial) |
| Cisterns | $2 per gallon | $2 per gallon | 250 gallons minimum |
| Rain Gardens | $10 per sq. ft | $10 per sq. ft | 100 square feet minimum |
| Permeable Pavement | $12 per sq. ft | $12 per sq. ft | 400 sq. ft minimum (commercial) |
| Urban Tree Canopy | $150 per tree | $150 per tree | Minimum tree height of 5 feet |
| Conservation Landscaping | $5 per sq. ft | $5 per sq. ft | 250 square feet minimum |
The program has delivered tangible benefits to participants. For example, a Capitol Heights resident installed four 50-gallon rain barrels and received a $400 rebate. Meanwhile, a Greenbelt homeowner earned $1,057.80 for creating a 200-square-foot rain garden. The Windsor Green Homeowner’s Association in Greenbelt utilized the program to remove 12,812 square feet of pavement, earning the maximum rebate of $20,000 [4].
"This is a very worthwhile program to help protect our local waterways and the Chesapeake Bay… We planted over 15 trees on our property to help reduce stormwater runoff… The coordinator continued to act as a liaison with Prince George’s County regarding our rebate and we were reimbursed in full. We are very happy we found out about this program!"
– Jessica and Franklin, Prince George’s County Resident [4]
Montgomery County RainScapes Rewards Rebate Program
Montgomery County’s RainScapes Rewards Rebate Program is still active and offers the highest residential rebate in Maryland – up to $7,500 per property. Commercial, HOA, multifamily, and institutional properties can qualify for rebates up to $20,000 [1]. However, this program is only available to properties located outside the municipalities of Rockville, Gaithersburg, and Takoma Park, as these areas manage their own programs [1]. Rainwater harvesting systems are among the practices eligible for rebates, with a focus on reducing stormwater runoff.
Additional Local and State Rebate Programs
In addition to the county-level initiatives, several municipalities in Maryland have their own programs to promote rainwater harvesting.
- Gaithersburg: The city offers rebates for rainwater collection systems with a minimum capacity of 40 gallons. Homeowners and properties smaller than half an acre can receive up to $250, while larger properties, including HOAs, nonprofits, and multifamily dwellings, are eligible for up to $1,000 [3].
- Rockville: Rockville’s RainScapes Rebate Program provides up to $5,000 for residential properties and nonprofits. The program includes incentives for rain barrels, cisterns, rain gardens, and urban tree planting [5][6].
Residents in Bowie, Rockville, Gaithersburg, and Takoma Park are encouraged to check with their local governments for additional programs that may complement county-level rebates [4][1]. With various options available, many Maryland homeowners can access financial assistance for rainwater harvesting projects. However, funding levels and program availability may vary depending on municipal budgets and priorities.
How to Qualify and Apply for Rebates
Understanding how to qualify and apply for Maryland’s rainwater harvesting rebates is essential if you want to take advantage of these programs. Below, you’ll find the key steps and requirements to ensure your application process goes smoothly.
Basic Qualification Requirements
To qualify for Maryland’s rebate programs, a few essential criteria must be met. First, property ownership is a major factor. Most programs require you to own the property where the rainwater harvesting system will be installed. However, some allow nonprofits to complete projects on private or public land if formal agreements are in place [2]. If you live in a property governed by an HOA, securing HOA approval will likely be necessary before you proceed [2].
The type of project also matters. Rebates are typically not available for projects that are part of permit requirements for new construction, additions, or renovations [2][4]. Eligible projects must generally be voluntary improvements rather than those mandated by local regulations.
Before starting your project, you must obtain pre-approval from the Chesapeake Bay Trust [2]. Once approved, you’ll need to complete the installation within 12 months to stay in compliance with program rules and ensure the project delivers the intended environmental benefits [2].
Application Documents and Steps
While specific documentation varies by program, there are some standard requirements most applicants must meet. For Montgomery County’s RainScapes Rewards program, for instance, you’ll need to provide a scaled location plan showing the foundation area. If your property is part of an HOA, you’ll also need to include an HOA approval letter. Final submissions usually require itemized receipts (excluding taxes), a signed Property Owner Agreement, and scheduling a final inspection [7].
Prince George’s County’s Rain Check Rebate Program follows a similar process, administered through the Chesapeake Bay Trust. Applicants must submit documentation confirming HOA approval if applicable, along with invoices and receipts to avoid delays. Additionally, commercial or public projects require an operations and maintenance agreement [2].
A site inspection is often the final step to confirm that the installation meets all program specifications and functions correctly. It’s important to schedule this inspection promptly after completing your project to ensure you meet program deadlines.
Some local programs offer expanded opportunities. For example, Gaithersburg’s program includes single-family homes, HOAs, private schools, nonprofits, and multifamily properties that install qualifying rainwater collection systems [3]. Similarly, Rockville works with the Chesapeake Bay Trust to administer its rebate program [5].
Program Limits and Restrictions
Each rebate program has specific limits on funding. In Montgomery County, residential properties can receive up to $7,500, while commercial, HOA, multifamily, or institutional properties may qualify for up to $20,000 per parcel [1].
Rebates are capped at the actual cost of the project [2], and applicants can complete multiple projects until they reach the maximum rebate amount for their property [4]. For Rockville residents, the lifetime rebate limit is $5,000, allowing for ongoing improvements over time [5].
Since program rules can vary and sometimes change, it’s a good idea to contact program administrators directly if you have questions. The Chesapeake Bay Trust is an excellent resource for guidance on applications for Prince George’s County and Rockville programs [2][5].
Maryland Rebate Program Comparison
If you’re looking to save on water conservation projects in Maryland, comparing rebate programs can help you make the most of your investment. Here’s a breakdown of the key features of the top programs available in the state.
Side-by-Side Program Comparison
The table below outlines the major rainwater harvesting rebate programs in Maryland, making it easier to find the best fit for your location and project needs.
| Feature | Prince George’s County Rain Check | Montgomery County RainScapes Rewards | Rockville RainScapes |
|---|---|---|---|
| Program Status (as of Jun 13, 2025) | Proposed suspension for FY26 (July 1, 2025 – June 31, 2026) [4] | Active [1] | Active [5] |
| Coverage Area | Prince George’s County (excluding City of Bowie) [4] | Montgomery County (excluding Rockville, Gaithersburg, Takoma Park) [1] | City of Rockville [5] |
| Residential Max Rebate | $6,000 (lifetime) [2][4] | $7,500 (per parcel) [1] | $5,000 (lifetime) [5] |
| Commercial/HOA Max Rebate | $20,000 (per property) [2] | $20,000 (per parcel) [1] | $5,000 (lifetime) [5] |
| Eligible Practices | Rain barrels, cisterns, rain gardens, green roofs, permeable pavement, pavement removal, conservation landscaping, urban tree canopy [2][4] | Stormwater gardens, water harvesting, green roofs, permeable pavement, pavement removal [1] | Conservation landscaping, rain gardens, pavement removal, rain barrels, cisterns, tree canopy, permeable paver retrofit, green roofs [5] |
| Application Partner | Chesapeake Bay Trust [2][4] | Montgomery County DEP Planner [1] | Chesapeake Bay Trust [5] |
| Pre-Approval Required | Yes, before project implementation (except rain barrels) [2] | Yes, projects installed before site assessment and plan approval do not qualify [1] | Not specified |
Key Differences Among Programs
Montgomery County stands out with the highest residential rebate, offering up to $7,500 per parcel [1]. However, residents in Rockville, Gaithersburg, and Takoma Park must use separate municipal programs instead [1].
Prince George’s County provides rebates up to $6,000 for residential properties, but the program is facing a potential suspension for FY26, which could limit future opportunities [4]. Additionally, Bowie residents are excluded since the city operates its own stormwater program [2].
Rockville offers a $5,000 lifetime cap for both residential and commercial properties [5]. While this may work for smaller projects, it’s less competitive for larger installations compared to the $20,000 maximum offered by Montgomery and Prince George’s counties for commercial or HOA properties [1][2].
Application Process and Eligible Practices
The application process varies across programs. Montgomery County assigns a dedicated planner to guide applicants through site assessments and plan approvals [1]. In contrast, both Prince George’s County and Rockville rely on the Chesapeake Bay Trust to manage applications [2][4][5].
When it comes to eligible practices, Prince George’s County offers the most extensive list, including urban tree canopy and conservation landscaping projects not available under Montgomery County’s program [2][4]. However, certain geographic restrictions apply in Prince George’s County for areas like Cheverly, University Park, and College Park due to existing municipal incentives for tree planting [2].
For commercial properties and HOAs, Montgomery and Prince George’s counties provide a $20,000 rebate cap, making them better suited for larger-scale installations compared to Rockville’s $5,000 limit [1][2][5].
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Getting the Most from Maryland Rebate Programs
With some thoughtful planning and smart choices, you can make the most of Maryland’s rebate programs while setting up an efficient rainwater management system for your property. Combining various practices, meeting program guidelines, and working with experienced professionals can transform a simple project into a well-rounded solution that delivers both environmental and financial benefits.
Combining Multiple Systems for Higher Rebates
One of the best ways to maximize your rebate is by implementing multiple rainwater management practices on your property. Not only does this approach increase your rebate amount, but it also creates a more effective system to handle stormwater.
For instance, pairing a cistern with a rain garden and pavement removal can help you hit the maximum rebate thresholds in many counties. These combinations address a range of water issues, like erosion, runoff, and standing water, while also boosting your rebate potential. Start by identifying problem areas on your property and then choose solutions that tackle these issues while qualifying for higher rebates [1].
However, combining systems is only part of the equation. To fully benefit, you’ll need to strictly follow program requirements.
Meeting Program Requirements
Navigating program requirements is crucial to securing your full rebate. Each program has specific rules about technical standards and documentation, and missing any of these details could disqualify your application.
Pre-approval is a must for most projects. For example, Montgomery County requires a site assessment and plan approval before you start any work. Projects completed without this step won’t qualify for rebates [1]. Similarly, in Prince George’s County, all practices except rain barrels need pre-approval [2]. Skipping this step can mean losing out on the rebate entirely.
Once approved, you’ll need to stick to strict documentation standards. Programs administered by the Chesapeake Bay Trust, such as those in Prince George’s County and Rockville, require detailed plans, material specs, and proof of completion. Inspections are often conducted to ensure everything is up to code [2][5].
Timing is another key factor. After receiving pre-approval, you’ll typically have a limited period to finish the installation and submit your final paperwork. If delays arise, it’s important to contact your program coordinator right away to avoid losing eligibility.
Maintenance also plays a role in long-term benefits. For instance, Montgomery County residents who properly maintain their systems can continue to receive Water Quality Protection Charge credits, adding savings beyond the initial rebate [1].
Finally, working with trained professionals can simplify the process. Prince George’s County, for example, provides a list of contractors who have completed Rain Check Rebate training and are familiar with program standards [4][2].
To meet all requirements and get the most from your investment, professional installation is highly recommended.
Professional Installation and Support
Hiring professionals to install your rainwater management system ensures that it not only meets all rebate program requirements but also performs effectively over the long term. Expert installers can integrate different systems – like rain gardens, permeable pavements, and cisterns – to work together seamlessly, maximizing both functionality and rebate potential.
Pro Landscapes MD is a trusted name in stormwater management across central Maryland, serving areas like Howard, Montgomery, Carroll, Frederick, Prince George’s, and Baltimore counties. They handle everything from site assessments and design to maintenance, covering a wide range of rebate-eligible practices such as rain gardens, cisterns, and permeable pavement installations.
One major advantage of working with professionals is their ability to manage the technical documentation required for rebate applications. This reduces the administrative burden on homeowners and ensures compliance with program standards.
Additionally, professional installations often use high-quality materials and proven methods, ensuring durability and reliability. While DIY projects might seem cheaper upfront, professional work typically delivers better long-term value through proper design, superior materials, and warranty protections.
With rebates for residential properties reaching up to $6,000 to $7,500, it’s financially wise to ensure your project meets all requirements [1][2]. Professional installation not only helps you achieve this but also reduces long-term costs while enhancing system performance.
Summary and Next Steps
Maryland’s rainwater harvesting rebate programs offer financial support to encourage better stormwater management practices. For example, Montgomery County provides rebates of up to $7,500 for residential properties, while Prince George’s County offers up to $6,000. These funds help offset installation costs and contribute to improving local water quality[1][2].
To qualify for these rebates, you’ll need to pay upfront and then apply for reimbursement once your project is completed[8]. Each program has its own set of rules, including pre-approval requirements and documentation standards. In Montgomery County, for instance, the application process generally takes about 6–8 weeks[1].
However, some programs face funding challenges. For example, the Prince George’s County Rain Check Rebate Program is proposed to be suspended for fiscal year 2026[4]. This highlights the importance of staying updated about program availability and acting quickly when opportunities arise.
To make the most of these rebates, start by assessing your property’s water management needs – whether it’s reducing runoff or addressing erosion[1]. Explore eligible projects like rain gardens, cisterns, or permeable pavement. Combining multiple systems could even help you qualify for higher rebate amounts.
Professional installation services, such as those offered by Pro Landscapes MD, can ensure your project meets all technical requirements. Their expertise in drainage solutions, environmental pavers, and sustainable landscaping can simplify the process and help you maximize your rebate.
Before starting any work, reach out to your local program administrator, as pre-approval is often mandatory[2]. Keep detailed records of your expenses and maintain open communication with program coordinators to ensure you receive the full reimbursement. These steps not only help secure your rebate but also set the stage for lasting environmental benefits.
"Prince George’s County is committed to improving the quality of life for its communities by promoting green solutions to stormwater runoff."[2]
FAQs
What’s the best way to choose a rainwater harvesting rebate program for my property in Maryland?
To locate the best rainwater harvesting rebate program in Maryland, consider options like Montgomery County’s RainScapes Rewards or Prince George’s County’s Rain Check Rebate. These initiatives often offer rebates based on the system’s capacity – such as $1 per gallon of water collected.
Make sure to carefully check the eligibility requirements, including deadlines, necessary documentation, and specific project guidelines. For instance, some programs might require you to apply before installation or by a particular date. By comparing rebate amounts and program conditions, you can choose the program that works best for your property and helps you get the most savings.
What do I need to do to apply for a rainwater harvesting rebate in Montgomery County, Maryland?
To apply for a rainwater harvesting rebate in Montgomery County, begin by submitting your project application. Make sure to include your Property Tax ID as part of the submission. Once your application is in, a planner will be assigned to assist you throughout the process. After your project gets the green light, you can move forward with the installation.
Once the installation is complete, you’ll need to submit documentation, including receipts, proof of completion, and a signed property owner agreement. It’s important to follow all the guidelines outlined by Montgomery County’s Department of Environmental Protection (DEP) to make sure your rebate application is approved.
Can I start my rainwater harvesting project in Maryland without getting pre-approval?
Starting a rainwater harvesting project in Maryland without getting pre-approval from the appropriate program administrators can create a host of problems. You could end up facing fines, project delays, or even be forced to alter or remove your system entirely if it doesn’t align with local regulations.
Getting pre-approval helps ensure your project meets all legal standards, makes you eligible for any rebates or incentives, and keeps things running smoothly. Be sure to consult with your local program administrators before diving in to avoid headaches and make the most of your efforts.
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