Cities with Zero EPA Water Quality Violations

These cities have maintained perfect or near-perfect compliance with the Safe Drinking Water Act. With no significant violations on record, residents can have confidence in their municipal water systems.

What Does "No Violations" Mean?

These water systems have not exceeded EPA contaminant limits, have properly treated their water, and have fulfilled all monitoring and reporting requirements. This represents the highest standard of regulatory compliance for public water systems.

Compliance Statistics

Cities with
Perfect Compliance

100

Average Score
Among compliant cities

Perfect 100 Score
Exceptional systems

19.3M

People Served
By clean-record systems

Understanding EPA Water Violations

Different types of violations and their significance for water safety

Health-Based Violations

High Severity

Exceeding Maximum Contaminant Levels (MCLs) for regulated substances like lead, arsenic, or bacteria.

Treatment Technique Violations

High Severity

Failing to properly treat water according to EPA requirements, such as inadequate filtration.

Monitoring Violations

Medium Severity

Not testing water as frequently as required or not reporting results to EPA.

Reporting Violations

Low Severity

Failing to notify consumers about water quality issues or provide annual reports.

States with Most Violation-Free Cities

Cities with Perfect EPA Compliance

These cities have maintained excellent compliance records with no significant violations.

Rank	City	State	Score	Grade	Population
1	Los Angeles	California	100/100	A	3,875,566
2	San Diego	California	100/100	A	1,385,379
3	Seattle	Washington	100/100	A	1,161,961
#4	Lawrenceville	Georgia	100/100	A	975,000
#5	Pittsburgh	Pennsylvania	100/100	A	686,000
#6	Perris	California	100/100	A	666,581
#7	Memphis	Tennessee	100/100	A	659,500
#8	Baton Rouge	Louisiana	100/100	A	596,844
#9	Albuquerque	New Mexico	100/100	A	560,326
#10	Long Beach	California	100/100	A	466,772
#11	Alpharetta	Georgia	100/100	A	434,517
#12	Tulsa	Oklahoma	100/100	A	413,000
#13	Wichita	Kansas	100/100	A	395,699
#14	Winston-Salem	North Carolina	100/100	A	391,900
#15	Little Rock	Arkansas	100/100	A	368,455
#16	Fremont	California	100/100	A	344,000
#17	La Mesa	California	100/100	A	277,668
#18	Montgomery	Alabama	100/100	A	276,000
#19	Des Moines	Iowa	100/100	A	246,055
#20	Fontana	California	100/100	A	237,700
#21	Richmond	Virginia	100/100	A	233,655
#22	Greenwood	Indiana	100/100	A	210,510
#23	Lancaster	California	100/100	A	208,129
#24	Oxnard	California	100/100	A	200,232
#25	Salem	Oregon	100/100	A	199,820
#26	Concord	California	100/100	A	198,000
#27	Evansville	Indiana	100/100	A	182,444
#28	Eugene	Oregon	100/100	A	176,000
#29	Santa Rosa	California	100/100	A	175,396
#30	Oceanside	California	100/100	A	171,483
#31	Laguna Hills	California	100/100	A	170,236
#32	Lafayette	Louisiana	100/100	A	169,389
#33	Springfield	Massachusetts	100/100	A	169,170
#34	Savannah	Georgia	100/100	A	168,958
#35	Rancho Santa Margarita	California	100/100	A	168,289
#36	Hayward	California	100/100	A	162,954
#37	Sunnyvale	California	100/100	A	157,566
#38	Roseville	California	100/100	A	155,612
#39	Champaign	Illinois	100/100	A	150,000
#40	Cedar Rapids	Iowa	100/100	A	142,364
#41	Gainesville	Georgia	100/100	A	140,000
#42	Escondido	California	100/100	A	137,044
#43	Warren	Michigan	100/100	A	134,056
#44	Vista	California	100/100	A	132,430
#45	Santa Clara	California	100/100	A	130,746
#46	Macon	Georgia	100/100	A	130,024
#47	Douglasville	Georgia	100/100	A	127,084
#48	Vallejo	California	100/100	A	121,420
#49	Fayetteville	Arkansas	100/100	A	116,398
#50	Antioch	California	100/100	A	115,074