38 programs · 20 states

Stormwater fee credits

Cities that charge a stormwater fee often cut it for homes that manage their own runoff with rain barrels, rain gardens or permeable surfaces. The credit is a percentage off the fee and usually has to be renewed or re-certified.

  • 38

    programs in 20 states

  • $52.50

    median maximum per household

  • 42%

    ask for a plan or plant list first

The largest programs

  • OpenPlan requiredMaine

    Portland Residential Stormwater Service Charge Credit

    City of Portland Department of Public Works, Water Resources Division

    Reduction of 0.5 stormwater billing unit (SBU) per month for homes billed 1 SBU (400-1,799 sq ft impervious; treat at least 600 sq ft), or 1.0 SBU for homes billed 2 or more SBU (1,800+ sq ft impervious; treat at least 1,200 sq ft). 1 SBU = 1,200 sq ft of impervious area. Stormwater fee is $7.75 per billing unit per month (unchanged effective July 1, 2026), so the credit is worth about $3.88/month (0.5 SBU) or $7.75/month (1.0 SBU).

    Up to $93 per household

  • OpenNew Jersey

    Raritan Township Stormwater Utility Fee Credit

    Raritan Township Stormwater Utility

    Up to 30% off the annual stormwater fee: 10% if the system meets the standards in place when approved, plus 10% if it meets the current NJ Stormwater BMP Manual, plus 10% if green infrastructure exceeds applicable requirements. Search summary of the township notice: 2026 base rate $40/yr, so a typical credit is roughly $20-$40 per the township estimate (not verified on the manual).

    Up to $12 per household

By state

Sow is not affiliated with any of these agencies or utilities. Amounts and rules change, often at the start of a fiscal year, so confirm the details on the official page before you start a project. How we research these programs

Plan the project before you apply

Sow lays out your new planting on a photo of your yard and builds the plant list from plants suited to where you live.

Start a plan in Sow