Is Your Tap Water Safe?
Check your water quality with real EPA data. Safety grades, contaminant levels, and violation history for every US water system.
Enter a zip code, city name, or water system name
49,184
Water Systems
1,383,453
Violations Analyzed
51
States & DC
Water Quality by State
AL
AlabamaAK
AlaskaAS
ASAZ
ArizonaAR
ArkansasCA
CACO
ColoradoCT
CTDE
DelawareDC
DCFL
FloridaGA
GeorgiaGU
GuamHI
HawaiiID
IdahoIL
IllinoisIN
IndianaIA
IowaKS
KansasKY
KentuckyLA
LAME
MaineMD
MarylandMA
MAMI
MichiganMN
MNMS
MSMO
MissouriMT
MontanaNE
NebraskaNV
NevadaNH
NHNJ
NJNM
NMNY
New YorkNC
NCND
NDMP
MPOH
OhioOK
OklahomaOR
OregonPA
PAPR
PRRI
RISC
SCSD
SDTN
TNTX
TexasVI
VIUT
UtahVT
VermontVA
VirginiaWA
WAWV
WVWI
WIWY
WyomingMost Contaminated Water Systems
Water systems with the most violations in the past 5 years.
EASTSIDE MHP
32 served5107 violations4647 recent
F
SUNRISE LAKES SEC 12
125 served5485 violations4513 recent
C
PA AMERICAN AUDUBON
8,200 served4949 violations4273 recent
C
GALICE SUBDIVISION WATER CO
33 served2676 violations2454 recent
F
BULLHEAD CITY MOHAVE
36,330 served2390 violations2359 recent
D
ROCK CREEK
33 served2338 violations2245 recent
D
SUNRISE LAKE SECTION 9
125 served2823 violations2228 recent
C
TIMBER CREEK MHP EAST & WEST
40 served3293 violations2002 recent
C
COUNTRY GLEN TOWNHOMES
50 served1978 violations1978 recent
C
OILTON
1,435 served1797 violations1604 recent
C
Cleanest Water in America
Large water systems with zero violations and an A safety grade.
NEW YORK CITY SYSTEM
8,271,000 served10 violations
A
LOS ANGELES-CITY, DEPT. OF WATER & POWER
3,875,566 served16 violations
A
MWRA
2,660,000 served0 violations
A
SAN ANTONIO WATER SYSTEM
2,113,151 served6 violations
A
WASHINGTON SUBURBAN SANITARY COMMISSION
1,900,000 served0 violations
A
LAS VEGAS VALLEY WATER DISTRICT
1,539,277 served66 violations
A
EAST BAY MUD
1,442,800 served0 violations
A
SAN DIEGO, CITY OF
1,385,379 served36 violations
A
DALLAS WATER UTILITY
1,356,479 served1 violations
A
COLUMBUS PUBLIC WATER SYSTEM
1,305,946 served4 violations
A