Water Use Rules in Maryland (2026)
8 rules on the books across Maryland, 7 cities and counties. Select a rule to read the full details.
Severity: Few Restrictions · Light Restrictions · Some Restrictions · Significant Restrictions · Heavy Restrictions
Recycled Water Rules
Where purple-pipe recycled water is required for irrigation, dual-plumbing requirements for new construction, and cross-connection-control rules.
Charles County
Significant RestrictionsCharles County controls reuse of treated wastewater from the Mattawoman WWTP under a formal reclaimed-effluent…
Read full rule →Howard County
Some RestrictionsHoward County operates a separate reclaimed water system alongside its drinking water and sewer utilities, billing…
Read full rule →Rockville
Few RestrictionsRockville exempts commercial vehicle washing facilities that use recycled water from the city's water-restriction ban…
Read full rule →Leak Reporting Duty
Property owner's duty to report and repair water leaks within a set window once notified, plus how utilities issue leak-adjustment credits and impose penalties.
Annapolis
Some RestrictionsAnnapolis requires customers to fix broken water or sewer lines after City notice, or forfeit a high-bill leak…
Read full rule →Carroll County
Some RestrictionsCarroll County lets water customers apply for a bill reduction after repairing a leak in their service line, but only…
Read full rule →Frederick
Some RestrictionsFrederick property owners must fix leaking pipes or fixtures once the city's water superintendent finds unnecessary…
Read full rule →Howard County
Some RestrictionsUnder Howard County Code § 18.106, the Director of Public Works may deny water service to any user who refuses to…
Read full rule →Montgomery County
Some RestrictionsIn licensed Montgomery County rental housing, pervasive water leaks causing chronic dampness, mold, or property damage…
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