What Does EPA Report About Your Tap Water?
Search public water systems and review EPA compliance history, recent violation records, and service-area data. TapScore does not replace current utility notices or household testing.
Enter a zip code, city name, or water system name
49,213
Water Systems
1,252,757
Historical EPA Records
56
States & Jurisdictions
EPA Compliance Records by State
AL
AlabamaAK
AlaskaAS
American SamoaAZ
ArizonaAR
ArkansasCA
CaliforniaCO
ColoradoCT
ConnecticutDE
DelawareDC
District of ColumbiaFL
FloridaGA
GeorgiaGU
GuamHI
HawaiiID
IdahoIL
IllinoisIN
IndianaIA
IowaKS
KansasKY
KentuckyLA
LouisianaME
MaineMD
MarylandMA
MassachusettsMI
MichiganMN
MinnesotaMS
MississippiMO
MissouriMT
MontanaNE
NebraskaNV
NevadaNH
New HampshireNJ
New JerseyNM
New MexicoNY
New YorkNC
North CarolinaND
North DakotaMP
Northern Mariana IslandsOH
OhioOK
OklahomaOR
OregonPA
PennsylvaniaPR
Puerto RicoRI
Rhode IslandSC
South CarolinaSD
South DakotaTN
TennesseeTX
TexasVI
US Virgin IslandsUT
UtahVT
VermontVA
VirginiaWA
WashingtonWV
West VirginiaWI
WisconsinWY
WyomingSystems With the Most Recent EPA Records
Ranked by violation-record count from July 1, 2021 through June 30, 2026. This is not a ranking of current tap-water safety.
SUNRISE LAKES SEC 12
125 served2,323 historical records1,701 recent
C
ROCK CREEK
33 served1,349 historical records1,299 recent
D
MARBLE WATER SYSTEM
94 served2,144 historical records1,240 recent
D
COAL MOUNTAIN WATER
80 served3,921 historical records1,118 recent
F
COUNTRY GLEN TOWNHOMES
50 served1,094 historical records1,094 recent
C
GALICE SUBDIVISION WATER CO
33 served1,237 historical records1,088 recent
F
SUNRISE LAKE SECTION 9
125 served1,218 historical records870 recent
C
TRAILS WEST SUBDIVISION
27 served1,112 historical records796 recent
C
OVERPECK MHP
25 served792 historical records784 recent
D
PA AMERICAN AUDUBON
8,200 served1,560 historical records747 recent
C
Large Systems With No Recent Violation Records
Large systems with no EPA violation records in the five-year period ending June 30, 2026. Historical records may still exist.
NEW YORK CITY SYSTEM
8,271,000 served3 historical records
A
LOS ANGELES-CITY, DEPT. OF WATER & POWER
3,875,566 served6 historical records
A
CITY OF HOUSTON
2,970,543 served1 historical record
A
SAN ANTONIO WATER SYSTEM
2,643,729 served22 historical records
A
MWRA
2,580,000 served1 historical record
A
WASHINGTON SUBURBAN SANITARY COMMISSION
1,900,000 served0 historical records
A
CITY OF BALTIMORE
1,600,000 served2 historical records
A
LAS VEGAS VALLEY WATER DISTRICT
1,539,277 served23 historical records
A
EAST BAY MUD
1,442,800 served4 historical records
A
SAN DIEGO, CITY OF
1,385,379 served6 historical records
A