Environment - Water Quality Testing - Secondary Maximum Contaminant Levels Action Plan
HB 1196 requires Maryland's Department of the Environment to establish a mobile home park water quality testing program by January 1, 2027. The program mandates testing 25% of parks by 2028, 50% by 2029, 75% by 2030, and 100% by 2031, prioritizing parks with ≥40% minority residents, known contamination areas, or resident complaints. Park owners must take corrective actions if water quality issues are found, and the Department must notify residents and develop a statewide action plan. This directly affects mobile home park owners, residents, and the Department of the Environment through mandated testing, reporting, and remediation requirements.
Bill status
signed
all 5 stages cleared
Introduction
Feb 2026
Committee Review
Apr 2026
House of Delegates Passage
Apr 2026
Senate Passage
Apr 2026
Signed into Law
Apr 2026
Introduced Feb 11, 2026
Signed Apr 28, 2026
Maddy AI version diff · 1 comparison
What changed between versions
First - Environment - Mobile Home Parks - Water Quality Testing
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Third - Environment - Water Quality Testing - Secondary Maximum Contaminant Levels Action Plan
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2 edits
MINOR
The bill was amended to expand its scope from general water quality testing to specifically include a plan for enforcing secondary maximum contaminant levels (non-health-based aesthetic standards like taste and color). The legislative text was updated to reflect this new focus, and the list of bill sponsors was revised to include additional members.
Scope change
The bill's scope was expanded to explicitly require a statewide action plan for secondary maximum contaminant level enforcement, moving beyond just primary health-based standards.
SCOPE
The bill title and purpose were updated to include 'Secondary Maximum Contaminant Levels Action Plan,' broadening the legislative intent to address non-health-based water quality issues like taste, odor, and color.
ELIGIBILITY
The list of bill sponsors was changed to include Delegates Howard, Woods, and Holmes, replacing Delegate Taylor and adding Woods twice in the original text.
Floor votes · Senate Mar 25, 2026 · House of Delegates Mar 7, 2026
How they voted
46–0
Passed · 3 other
Total votes 49
Mar 25, 2026
D
Democratic36
94% Yea
R
Republican13
92% Yea
Vote distribution
All Yea
All Nay
Mixed
No data
Full legislative history
Actions timeline
Total actions
18
Key actions
12
Committee
7
Apr 28, 2026
Signed into law
Approved by the Governor - Chapter 287
executive
Apr 13, 2026
Lower · Passed
Returned Passed
lower
Apr 13, 2026
Upper · Passed
Third Reading Passed
upper
Apr 9, 2026
Upper · Passed
Favorable Adopted
upper
Apr 9, 2026
Upper · Passed
Motion Special Order until Later Today (Senator Kagan) Adopted
upper
Apr 9, 2026
Upper · Passed
Favorable
upper
Apr 9, 2026
Upper · Passed
Favorable Report by Education, Energy, and the Environment
upper
Mar 25, 2026
Senate · Passed
Senate Vote: pass (46-0-3)
senate
Mar 20, 2026
Committee
Referred Education, Energy, and the Environment
upper
Mar 19, 2026
Lower · Passed
Third Reading Passed
lower
Mar 19, 2026
Lower · Passed
Favorable with Amendments {
lower
Mar 19, 2026
Lower · Passed
Favorable with Amendments Report by Environment and Transportation
lower
Mar 7, 2026
House Of Delegates · Passed
House of Delegates Vote: pass (130-0-12)
house of delegates
Feb 11, 2026
Committee
First Reading Environment and Transportation
lower
7 primary · 0 co-sponsors
Sponsors
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