Water Quality by State

AL 185 health IPC B

Alabama

819 ZIP codes · 477 systems

1571 violations

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AK 1 alert 1173 health UPC B

Alaska

274 ZIP codes · 245 systems

14004 violations

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AZ 4074 health UPC C

Arizona

553 ZIP codes · 439 systems

29686 violations

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AR 1 alert 606 health IPC B

Arkansas

706 ZIP codes · 605 systems

1738 violations

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CA 16 alerts 3328 health UPC B

California

2630 ZIP codes · 1809 systems

7292 violations

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CO 4 alerts 671 health IPC C

Colorado

658 ZIP codes · 622 systems

4570 violations

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CT 1 alert 343 health IPC C

Connecticut

433 ZIP codes · 344 systems

3061 violations

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DE 4 alerts 14 health IPC B

Delaware

97 ZIP codes · 140 systems

155 violations

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DC 1644 health IPC C

District of Columbia

286 ZIP codes · 4 systems

9042 violations

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FL 1608 health IPC B

Florida

1484 ZIP codes · 928 systems

35243 violations

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GA 550 health IPC B

Georgia

964 ZIP codes · 884 systems

4530 violations

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HI 1 health UPC B

Hawaii

137 ZIP codes · 89 systems

16 violations

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ID 1 alert 278 health UPC C

Idaho

324 ZIP codes · 423 systems

1665 violations

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IL 22 alerts 752 health State-specific C

Illinois

1583 ZIP codes · 1480 systems

7431 violations

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IN 5 alerts 909 health IPC C

Indiana

980 ZIP codes · 721 systems

5914 violations

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IA 1 alert 159 health IPC C

Iowa

1058 ZIP codes · 963 systems

2974 violations

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KS 4 alerts 844 health IPC C

Kansas

749 ZIP codes · 799 systems

3375 violations

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KY 241 health State-specific C

Kentucky

947 ZIP codes · 337 systems

573 violations

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LA 5 alerts 3238 health State-specific B

Louisiana

723 ZIP codes · 650 systems

5477 violations

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ME 2 alerts 287 health IPC C

Maine

485 ZIP codes · 348 systems

1440 violations

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MD 1 alert 229 health IPC C

Maryland

615 ZIP codes · 295 systems

1135 violations

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MA 1 alert 148 health State-specific C

Massachusetts

695 ZIP codes · 493 systems

893 violations · 1 rebate prog.

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MI 436 health IPC B

Michigan

1167 ZIP codes · 1019 systems

2609 violations

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MN 188 health IPC C

Minnesota

1009 ZIP codes · 797 systems

946 violations

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MS 1 alert 1109 health IPC B

Mississippi

532 ZIP codes · 814 systems

3537 violations

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MO 29 alerts 404 health IPC C

Missouri

1161 ZIP codes · 1084 systems

3116 violations

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MT 431 health IPC C

Montana

405 ZIP codes · 442 systems

2102 violations

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NE 4 alerts 323 health IPC C

Nebraska

621 ZIP codes · 560 systems

1153 violations

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NV 122 health IPC/UPC B

Nevada

254 ZIP codes · 123 systems

691 violations

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NH 1 alert 301 health IPC C

New Hampshire

282 ZIP codes · 446 systems

809 violations

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NJ 7 alerts 352 health NSPC C

New Jersey

726 ZIP codes · 342 systems

3591 violations

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NM 1299 health UPC C

New Mexico

428 ZIP codes · 446 systems

13426 violations

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NY 2672 health IPC C

New York

2186 ZIP codes · 1761 systems

15109 violations · 3 rebate prog.

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NC 2075 health IPC B

North Carolina

1085 ZIP codes · 1066 systems

12821 violations

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ND 30 health IPC C

North Dakota

407 ZIP codes · 288 systems

395 violations

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OH 515 health IPC C

Ohio

1435 ZIP codes · 883 systems

2908 violations

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OK 3 alerts 3730 health IPC B

Oklahoma

771 ZIP codes · 805 systems

10231 violations

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OR 7 alerts 241 health UPC B

Oregon

482 ZIP codes · 580 systems

3436 violations

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PA 5 alerts 917 health IPC C

Pennsylvania

2184 ZIP codes · 1391 systems

12763 violations

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RI 73 health IPC C

Rhode Island

90 ZIP codes · 76 systems

462 violations

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SC 246 health IPC B

South Carolina

534 ZIP codes · 382 systems

736 violations

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SD 1 alert 92 health UPC C

South Dakota

392 ZIP codes · 330 systems

379 violations

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TN 217 health IPC C

Tennessee

787 ZIP codes · 424 systems

1334 violations

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TX 22 alerts 5329 health IPC B

Texas

2649 ZIP codes · 2219 systems

21910 violations

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UT 2 alerts 101 health IPC B

Utah

347 ZIP codes · 363 systems

890 violations

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VT 2 alerts 73 health IPC B

Vermont

308 ZIP codes · 310 systems

880 violations

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VA 213 health IPC C

Virginia

1228 ZIP codes · 627 systems

1610 violations

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WA 13 alerts 121 health UPC B

Washington

726 ZIP codes · 809 systems

1630 violations

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WV 608 health IPC C

West Virginia

855 ZIP codes · 377 systems

8169 violations

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WI 816 health State-specific C

Wisconsin

898 ZIP codes · 903 systems

5281 violations

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WY 4 alerts 134 health IPC C

Wyoming

195 ZIP codes · 209 systems

747 violations

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