Water Use Rules in Charles County, MD (2026)
1 rule for unincorporated Charles County, Maryland.
Verified from official government sources
Note: These county rules apply to unincorporated areas of Charles County. If you live within an incorporated city, that city's own rules apply: see the city list below.
Recycled Water Rules
Charles County controls reuse of treated wastewater from the Mattawoman WWTP under a formal reclaimed-effluent allocation policy. Industrial and outdoor users must sign a purchase agreement with the County Commissioners, pay a deposit, and accept priority tiers: guaranteed "firm" service or interruptible "non-firm" service, split by a set bulk-allocation percentage table.
Charles County Reclaimed Effluent Allocation
Significant RestrictionsCharles County Code § 291-56, Allocation of reclaimed effluent supply
The Charles County public effluent system is serviced by several small treatment plants and one large treatment plant, which has a total capacity of 20 MGD. In concurrence with water conservation provisions, utilizing reclaimed effluent for industrial and/or outdoor use is allowed in accordance with the following policy. ... The Mattawoman WWTP currently discharges 10.8 MGD of reclaimed effluen...
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