Rain barrels and rainwater harvesting are legal in Baltimore County and encouraged as stormwater best-management practices. Maryland has no statute banning rainwater collection; the county and state offer rebates and credits for on-site stormwater capture.
Maryland does not prohibit residential rainwater harvesting, and Baltimore County actively promotes it to reduce stormwater runoff into the Chesapeake Bay watershed. Rain barrels, cisterns, rain gardens, and other on-site capture practices are permitted and are counted as qualifying stormwater best-management practices. The county administers a stormwater remediation fee and offers credits/incentives for property owners who install approved runoff-reduction measures. Larger cistern or rooftop-harvesting systems tied to plumbing or used for non-potable indoor supply must meet Maryland plumbing-code cross-connection and backflow requirements. No permit is needed for a simple downspout rain barrel.
No penalties for using rain barrels. Plumbed cistern systems that violate cross-connection/backflow plumbing-code rules can be flagged during inspection and must be corrected.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
baltimore-county-md
Baltimore County parks are open from sunrise to sunset. Being in a county park outside those hours is prohibited under Article 30 of the Baltimore County Cod...
baltimore-county-md
Baltimore County limits light trespass through the Zoning Regulations' performance standards. Adjacent residential uses are protected by a footcandle cap at ...
baltimore-county-md
Baltimore County has no formal dark-sky lighting ordinance. Outdoor lighting is instead controlled through the Baltimore County Zoning Regulations' performan...
baltimore-county-md
Baltimore County permits a homeowner two garage or yard sales per year as an accessory use, each no longer than a weekend. Sale signs may not be placed in th...
baltimore-county-md
Temporary political and campaign signs on private residential property in Baltimore County are regulated under BCZR Section 450 and its Table of Sign Regulat...
baltimore-county-md
Baltimore County has no separate tiny-home zoning category. A tiny house on a permanent foundation can qualify only as an accessory apartment in a detached a...
See how Baltimore County's rainwater harvesting rules stack up against other locations.
Help us keep this page accurate. If you notice an error or outdated information, let us know.