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Missouri Water Rebates

St. Louis, Missouri Water Rebates

MSD Project Clear runs its Rainscaping Small Grants Program with the Missouri Botanical Garden. It reimburses up to $4,000 for projects that slow and soak up stormwater, including rain gardens, native plantings, and permeable patios. Two things trip people up. You have to complete the orientation before you apply, and you have to wait for a Notice to Proceed before you install anything.

Up to $4,000

Rainscaping Small Grants Program

Open the official program site

How to apply

  1. Confirm your property is in the MSD Project Clear service area on the online map
  2. Watch the orientation video and complete the survey
  3. Plan your rainscaping project using the Landowner Handbook
  4. Submit your application by mail or hand delivery
  5. Wait for approval and a Notice to Proceed before installing anything
  6. Complete the project, then submit receipts for reimbursement up to $4,000

What you'll need

  • Service-area confirmation from the online map
  • Orientation survey completion
  • Project plan or design
  • Notice to Proceed
  • Itemized receipts for reimbursement

Pollinator Patch can help: It picks St. Louis-appropriate Missouri natives for the rain garden, designs an HOA-friendly layout that fits the rainscaping requirements, and assembles your plan and plant list for the application packet.

Avoid these mistakes

  • Don't start installation before you receive your Notice to Proceed. Early work is not reimbursed.
  • Don't skip the orientation video and survey. They are a prerequisite to applying.
  • Don't apply for both the MSD grant and a Deer Creek Watershed Alliance award for the same project. A landowner may receive only one.

St. Louis Water Rebate FAQs

How much does the MSD Project Clear rainscaping grant pay?
Up to $4,000, paid as a reimbursement after the project is completed, for rain gardens, native plantings, permeable pavement, and similar stormwater features (MSD Project Clear / Missouri Botanical Garden, verified June 2026).
Can I start my rain garden before applying?
No. You have to complete the orientation, apply, and receive a Notice to Proceed before any installation. Work started early is not reimbursed.
Can I get both the MSD grant and the Deer Creek Alliance award?
No. A landowner may receive an award from only one of the two programs for the same project, not both.
How do I submit the application?
By mail or hand delivery only. The program does not accept online submissions. Contact the Rainscaping Team at rainscaping@mobot.org or 314-577-0202 with questions.

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Programs change throughout the year. If something here is out of date or wrong, tell us and we'll check it against the provider.

We compile these programs from utility and city pages, and not every amount here has been independently confirmed. Program details also change throughout the year. Always verify requirements, amounts, and eligibility directly with your water utility before starting work. Pollinator Patch is not affiliated with any rebate program and does not guarantee approval.