EPA drinking water rule · 340
Radionuclides and Revised Rad Rule
See how this rule appears in the reported histories and find systems with unresolved health-based records.
- Violation records shown
- 15,472
- Systems with a linked record
- 2,656
- Unresolved health-based records
- 29
Rule records by EPA-listed state
| Listed state | Systems | Violation records | Unresolved health-based records |
|---|---|---|---|
| Alabama | 28 | 163 | 0 |
| Alaska | 48 | 267 | 0 |
| American Samoa | 10 | 78 | 0 |
| Arizona | 80 | 541 | 0 |
| Arkansas | 1 | 3 | 0 |
| California | 89 | 741 | 0 |
| Colorado | 130 | 1,459 | 17 |
| Connecticut | 28 | 102 | 0 |
| Delaware | 2 | 5 | 0 |
| District of Columbia | 5 | 27 | 0 |
| Florida | 7 | 42 | 0 |
| Georgia | 154 | 821 | 0 |
| Idaho | 88 | 402 | 0 |
| Illinois | 117 | 278 | 0 |
| Indiana | 65 | 195 | 0 |
| Iowa | 45 | 86 | 0 |
| Kansas | 16 | 72 | 0 |
| Maine | 53 | 98 | 0 |
| Maryland | 8 | 10 | 0 |
| Massachusetts | 14 | 68 | 0 |
| Michigan | 84 | 128 | 0 |
| Minnesota | 39 | 190 | 3 |
| Mississippi | 17 | 28 | 0 |
| Missouri | 22 | 133 | 0 |
| Montana | 55 | 202 | 0 |
| Nebraska | 7 | 74 | 0 |
| Nevada | 26 | 399 | 0 |
| New Hampshire | 42 | 138 | 0 |
| New Jersey | 71 | 593 | 0 |
| New Mexico | 16 | 133 | 0 |
| New York | 63 | 300 | 1 |
| North Carolina | 46 | 248 | 7 |
| North Dakota | 6 | 71 | 0 |
| Northern Mariana Islands | 16 | 53 | 0 |
| Ohio | 12 | 17 | 0 |
| Oklahoma | 121 | 1,863 | 0 |
| Oregon | 205 | 707 | 0 |
| Pennsylvania | 427 | 1,495 | 0 |
| Puerto Rico | 1 | 5 | 0 |
| Rhode Island | 7 | 28 | 0 |
| South Carolina | 3 | 27 | 0 |
| South Dakota | 18 | 65 | 0 |
| Tennessee | 7 | 21 | 0 |
| Texas | 126 | 1,779 | 0 |
| Utah | 2 | 20 | 0 |
| Vermont | 43 | 134 | 0 |
| Virginia | 34 | 178 | 0 |
| Washington | 23 | 80 | 0 |
| West Virginia | 36 | 210 | 0 |
| Wisconsin | 55 | 371 | 1 |
| Wyoming | 38 | 324 | 0 |
Systems with unresolved health-based records for this rule
- A AND B WA INCCO0150100 · Colorado · 1 unresolved health-based records for this rule
- ASHLEY HILLS NORTH S/DNC0392341 · North Carolina · 2 unresolved health-based records for this rule
- AUTUMN RIDGE S/DNC3041109 · North Carolina · 1 unresolved health-based records for this rule
- BEEHIVE WATER ASSOCIATIONCO0145030 · Colorado · 2 unresolved health-based records for this rule
- ElysianMN1400003 · Minnesota · 1 unresolved health-based records for this rule
- EUREKA WCCO0145150 · Colorado · 2 unresolved health-based records for this rule
- FAYETTE WCCO0145180 · Colorado · 1 unresolved health-based records for this rule
- HASTY WATER AUTHORITYCO0106200 · Colorado · 1 unresolved health-based records for this rule
- HOLLY TOWN OFCO0150600 · Colorado · 1 unresolved health-based records for this rule
- KENT WD 1NY3905708 · New York · 1 unresolved health-based records for this rule
- MANZANOLA TOWN OFCO0145450 · Colorado · 1 unresolved health-based records for this rule
- NEWDALE GRAND VALLEY WCCO0145480 · Colorado · 1 unresolved health-based records for this rule
- PATTERSON VALLEY WCCO0145540 · Colorado · 2 unresolved health-based records for this rule
- ROCKBRIDGE S/DNC4092073 · North Carolina · 3 unresolved health-based records for this rule
- Rolling Green First AdditionMN1660022 · Minnesota · 2 unresolved health-based records for this rule
- SOUTHERN TRACE S/DNC4392141 · North Carolina · 1 unresolved health-based records for this rule
- TWIN LAKES PARK WATER COOPWI2300151 · Wisconsin · 1 unresolved health-based records for this rule
- VALLEY WCCO0145750 · Colorado · 3 unresolved health-based records for this rule
- VROMAN WCCO0145780 · Colorado · 1 unresolved health-based records for this rule
- WEST GRAND VALLEY WACO0145810 · Colorado · 1 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.
- We matched active community water systems by public water system ID between EPA’s system search and SDWIS inventory. We show violations with a recorded noncompliance, initial reporting or return-to-compliance date from 2021 onward, plus earlier records listed as Addressed or Unaddressed.
- EPA’s health-based flag identifies violations of contaminant or disinfectant limits or treatment requirements. Monitoring and reporting violations describe required tests or reports. Neither category measures household exposure.
- Addressed means EPA records formal enforcement on a violation that remains unresolved in the snapshot. Unaddressed means no formal action is recorded for an unresolved violation. Resolved can mean compliance was restored, the rule ceased to apply, or further action was unnecessary. Archived is a separate status.
- We count a violation once per water system and group its distinct linked actions. Conflicting records are set aside. Places are EPA-listed search locations and can include mailing locations. Use the provider name and system ID to identify your service.
EPA data dictionary and files · EPA reporting and enforcement FAQ · Find an annual water quality report · How to get the report from your utility