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EPA drinking water rule · 351

Lead and Copper Rule Revisions

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

Violation records shown
12,624
Systems with a linked record
7,953
Unresolved health-based records
1,582

Rule records by EPA-listed state

Linked community water records
Listed stateSystemsViolation recordsUnresolved health-based records
Alabama38579
Alaska5811319
Arizona2754419
Arkansas469144
California5511,048459
Colorado10815712
Connecticut130256122
District of Columbia341
Georgia3153220
Hawaii220
Idaho1432131
Illinois27843350
Indiana10819110
Kansas2963391
Kentucky25291
Louisiana18129623
Maryland1642852
Massachusetts363
Michigan22334524
Minnesota61670
Mississippi2104180
Missouri6606880
Nebraska83830
Nevada25443
New Mexico17434844
New York35338928
North Carolina31262226
North Dakota22320
Ohio30547016
Oklahoma481957101
Oregon798314
Puerto Rico233464232
South Carolina621020
South Dakota14243
Texas1,4722,569253
U.S. Virgin Islands6312544
Vermont63747
Virginia33330
Washington23303
Wisconsin27136015
Wyoming7143

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