Jurisdiction

Stormwater Remediation Fee Details for Residential Customers



Stormwater Remediation Fee Details for Others





Credit Opportunities




Notes and Links


Anne Arundel County
  • R10, R15, R22 zoning: $34.00
  • R1, R2, R5 zoning: $85.00
  • RA and RLD zoning: $170.00
  • Non-residential fees are $85.00/ERU of measured actual impervious surface.
For:
  • Owners of Multi-Family Property
  • Owners of Non-Residential Property
  • Owners of Residential Property with an Inspection/Maintenance Agreement for Private Stormwater Management executed after 2002.
"The maximum available Stormwater Fee Credit by state law is is 50%.The maximum credit will only be approved if entire impervious surface of a property is treated using one or more of the eligible runoff control practices or activities under the stormwater policy." Stormwater Fee Credit
ERU = 2,940 sq. ft. = $85.00 
Scheduled 60% due (2014) and 80% due (2015). Full fees due in 2016

Watershed Protection and Restoration Fee


Baltimore City
  • <820 sq. ft. impervious surface: $10/quarter
  • 820-1,500 sq. ft. impervious surface: $15/ quarter
  • >1,500 sq. ft. impervious surface: $30/quarter
  • All non-Single Family Properties will be charged based on a calculation of impervious surface: $15/ERU/quarter.
  • The only exception is the structures of religious non-profits, which will be billed at $3/ERU/quarter.
"Customers may earn credits against their fee by removing impervious surface from their property, or adopting best management practices like installing rain gardens or planting trees. Single- family properties may also earn credits by participating in organized clean ups or other approved activities." Maryland Stormwater Remediation Fee Information
One ERU = 1050 sq. ft. of impervious area


Clean Water Baltimore


Baltimore County
  • Single-family home, detached: $39 per year
  • Townhome or duplex: $21 per year
  • Condominium: $32 per year
  • Industrial and commercial property: $69 per 2,000 square feet
  • Institutional property, including non-profit organizations: $20 per 2,000 square fee
"An industrial, commercial or institutional property’s fee may be reduced upon installation of County-approved stormwater best-management practices (BMPs) to reduce the property’s pollutant load. This credit is based on the amount of impervious surface that drains to the BMP and its efficiency at removing pollutants." Stormwater Remediation Fee: Credits and Fee Reduction

There is an opportunity for residents to apply for financial hardship exemption from the fee. This applies only if they already qualify for hardship tax credits through another state program.
County Website

Carroll County

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Charles County
  • $43.00 per improved property flat fee
  • $43.00 per improved property flat fee
For Residential Property: 50% fee credit if property has stormwater best management practices in place and verified with photos.
For Non-Residential Property: 50% fee credit if property has stormwater best management practices in place and verified by an engineer.
See Credit Application
County Website
Federick County
$.01 per property per year
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County Policy


Harford County
  • $125 per year (only 12.50 for tax year 2013)
  • Commercial property: $7 per 500 sq. ft. of impervious area (only 10% to be paid for tax year 2013)
"Homeowners and business owners can get up to a 100% credit for doing remediation projects on their own property. Some of these projects include the use of rain barrels, the installation of rain gardens, retrofitting existing stormwater management facilities, and the planting of trees along waterways...Rules and regulations regarding stormwater remediation fee credits and/or exemptions have not yet been established. Once an advisory board has been selected and rules established, the committee will process the credit and exemption applications. This is expected to occur by late fall of 2013. The only applications that can be processed at this time are the “Hardship Exemption” which will be handled by the Treasury and “Appeal” which will be handled by Department of Public Works." Maryland Stormwater Fee: Projects, Credits and Exemptions
During the tax year 2013, the County Council task force will decide the fees for future years.



County FAQ


Howard County
  • $15 for own­ers of town­houses and condominiums
  • $45 for own­ers of homes on lots of one-quarter acre or less
  • $90 for own­ers of homes on lots larger than one-quarter acre
  • $15 for every 500 sq. ft. of impervious surface area
  • Non-profits are eligible for 100% reimbursement if they enroll and participate in a county program
"Your credit application cannot be processed without first reporting your practice on the University of Maryland Sea Grant Extension's SMART Tool (information from the SMART Tool does not need to be included, we receive it automatically)...Credit Appli­ca­tions are due no later than August 29, 2014 for con­sid­er­a­tion for the December 1, 2014 bills." Residential Credit Application

SMART Tool

"This application is for properties with an SDP of January 1, 2003 or later that are eligible for a credit of 50% of their fee. Credit Applications are due no later than March 3, 2014 for consideration for the July 1, 2014 bills." Non-Residential/Commercial Credit Application
Clean Water Howard



Montgomery County
  • Tier 1: <1,000 sq. ft. = $29.17
  • Tier 2: 1,000 - 1410 sq. ft. =$44.20
  • Tier 3: 1,410 - 3,412 sq. ft. = $88.40
  • Tier 4: 3,412 -3,810 sq. ft. =$132.60
  • Tier 5: 3,810 - 5,815 sq. ft. = $172.80
  • Tier 6: 5,815- 6,215 sq. ft. = $221.00
  • Tier 7: >6,215 sq. ft. = $265.20
  • Non-residential properties are calculated as such: (total impervious surface area/ 2,406) * $88.40
  • Non-profits properties are calculated at the same rate with the following tier structure:
  • Tier 1: <6,910 sq. ft. = no more than $132.60
  • Tier 2: 6,910 - 54,455 sq. ft. = no more than $795.60
  • Tier 3: >54,455 sq. ft. = no more than $2,033.20
"A reduction of up to 50% of the Water Quality Protection Charge will be awarded based on volume of water treated." Residential WQPC Credits

"A reduction of up to 50% of the charge will be awarded based on the volume of water treated by a combination of environmental site design and other stormwater management systems; or 60% reduction based on the volume of water treated, if the property is completely treated by environmental site design practices alone." Non-Residential/Commercial WQPC Credits
For 2013 one ERU= 2,406 sq. ft. of impervious surface= $88.40

Shared hardscapes are measured and divided among total residents for townhouses and condos.

Water Quality Protection Charge


Prince George's County
  • $20.58 per tax account flat fee for administrative costs and:
  • Tier 1: RT, R20, R35, and RU: $12.22
  • Tier 2: R55, RS, R80, RR and RM: $20.90
  • Tier 3: RE, ROS, RA, and RL: $41.80
  • $20.58 per tax account flat fee for administrative costs and:
  • A calculated rate of $20.90 for every ESU
The administrative fee must always be paid.
For Residential Properties: Best management practices must be installed and maintained for the impervious area fee to be reduced by up to 100%.
For Non-Residential Properties: Best management practices in place may reduce the impervious surface fee by up to 100%.
Stormwater Management Credits
One ESU = 2,456 square feet of impervious area

Clean Water Act Fees


City of Rockville
  • $99.65/ERU for single family detached homes
  • $99.65/ERU calculated for total area of impervious surface measured on all other non-residential properties
Credits are given only for structural stormwater practices maintained on Non-Residential property.
SWM Utility Fee Credit 
One ERU = 2,330 sq. ft. of impervious surface area. This is the median number for all residential properties in the county.

Water Quality Protection Charge