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EPA drinking water rule · 350

Lead and Copper Rule

See how this rule appears in the reported histories and find systems with unresolved health-based records.

Violation records shown
27,111
Systems with a linked record
13,492
Unresolved health-based records
270

Rule records by EPA-listed state

Linked community water records
Listed stateSystemsViolation recordsUnresolved health-based records
Alabama931060
Alaska2086362
American Samoa140
Arizona4129754
Arkansas831082
California5377915
Colorado3678205
Connecticut2084616
Delaware47600
District of Columbia6140
Florida6631,0450
Georgia2172470
Hawaii790
Idaho2724333
Illinois56995026
Indiana2624814
Iowa1291782
Kansas4307640
Kentucky15150
Louisiana3496945
Maine1783665
Maryland1512312
Massachusetts1592747
Michigan2904723
Minnesota2453883
Mississippi1091551
Missouri3754201
Montana3024663
Nebraska55650
Nevada37670
New Hampshire1632431
New Jersey3131,34125
New Mexico2876680
New York4526967
North Carolina6221,12610
North Dakota1001591
Northern Mariana Islands322200
Ohio951652
Oklahoma3097511
Oregon3339455
Pennsylvania34246221
Puerto Rico2032690
Rhode Island391014
South Carolina1081380
South Dakota64850
Tennessee741061
Texas1,8725,46877
Utah470
Vermont1091712
Virginia1722382
Washington3695506
West Virginia2337838
Wisconsin3135064
Wyoming1082184

Systems with unresolved health-based records for this rule

EPA data and scope

How to read the records

The enforcement snapshot is federal fiscal 2026Q3. The EPA archive labels its violation file October 13, 2026. EPA says federal reporting can lag by several months. For current advisories, check your utility or local drinking-water authority.

EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility