Oklahoma Drinking Water Compliance Records
889 water systems serving 3,653,821 people. 47,463 historical EPA violation records in the Q2 2026 snapshot.
TapScore Compliance-History Grades
A
233
26%
B
70
8%
C
226
25%
D
220
25%
F
140
16%
889
Water Systems
3,653,821
Population Served
47,463
Historical Records
13,435
Health-Based (All Years)
Systems With the Most Recent EPA Records
ROCK CREEK
33 served1,349 historical records1,299 recent
D
WALNUT PARK ESTATES
42 served1,006 historical records666 recent
D
BROOKSVILLE
90 served893 historical records631 recent
F
OILTON
1,435 served609 historical records444 recent
D
SPRING COVE RESORTS
225 served383 historical records353 recent
C
SURREY HILLS
87 served518 historical records351 recent
D
OSAGE PARK ADDN PROP
65 served421 historical records350 recent
D
SHERWOOD FOREST MOBILE ESTATES
172 served349 historical records317 recent
D
PINE COUNTRY LIVING MHP
100 served633 historical records266 recent
D
MENO
195 served262 historical records260 recent
F
Large Systems With No Recent Records
OKLAHOMA CITY
644,000 served1 historical record
A
TULSA
413,000 served22 historical records
A
BROKEN ARROW MUNICIPAL AUTHORITY
116,330 served14 historical records
A
NORMAN UTILITIES AUTHORITY
104,868 served17 historical records
A
EDMOND PWA
79,408 served39 historical records
A
MUSKOGEE MUNICIPAL AUTHORITY
38,310 served14 historical records
A
OKLAHOMA UNIVERSITY
34,000 served1 historical record
A
WAGONER CO. RWD #4
25,792 served1 historical record
A
ARDMORE
24,893 served22 historical records
A
FORT SILL HQUSAFACFS
23,000 served2 historical records
A
Largest Water Systems in Oklahoma
| Water System | Grade | Population | Historical Records |
|---|---|---|---|
| OKLAHOMA CITY | A | 644,000 | 1 |
| TULSA | A | 413,000 | 22 |
| BROKEN ARROW MUNICIPAL AUTHORITY | A | 116,330 | 14 |
| NORMAN UTILITIES AUTHORITY | A | 104,868 | 17 |
| LAWTON | C | 92,757 | 37 |
| EDMOND PWA | A | 79,408 | 39 |
| MIDWEST CITY | C | 55,935 | 19 |
| MOORE PUBLIC WORKS AUTHORITY | D | 55,083 | 162 |
| STILLWATER UTILITIES AUTHORITY | D | 53,000 | 20 |
| ENID | D | 49,347 | 20 |
| MUSKOGEE MUNICIPAL AUTHORITY | A | 38,310 | 14 |
| BARTLESVILLE | B | 34,748 | 14 |
| OKLAHOMA UNIVERSITY | A | 34,000 | 1 |
| SHAWNEE MUNICIPAL AUTHORITY | D | 29,990 | 38 |
| SAND SPRINGS | B | 28,774 | 16 |
| PONCA CITY MUN WATER | B | 27,155 | 19 |
| WAGONER CO. RWD #4 | A | 25,792 | 1 |
| WASHINGTON CO RWD #3 (NEW,#1) | B | 25,375 | 7 |
| ARDMORE | A | 24,893 | 22 |
| TINKER AIR FORCE BASE | C | 24,645 | 10 |
Contaminants in Oklahoma
Lead in OklahomaArsenic in OklahomaNitrate in OklahomaFluoride in OklahomaPFOS in OklahomaPFOA in OklahomaTHMs in OklahomaHAA5 in Oklahoma
Cities in Oklahoma
OKLAHOMA CITY(9)TULSA(4)BROKEN ARROW(2)NORMAN(6)LAWTON(11)EDMOND(15)STILLWATER(5)CLAREMORE(9)MIDWEST CITY(1)MOORE(1)ENID(6)MUSKOGEE(4)ARDMORE(3)BARTLESVILLE(5)PONCA CITY(7)ADA(4)SHAWNEE(5)COLLINSVILLE(2)SAND SPRINGS(3)JENKS(2)SAPULPA(3)MCALESTER(10)SALLISAW(4)ALTUS(4)OWASSO(2)YUKON(3)DUNCAN(1)FORT STILL(1)DEL CITY(2)TAHLEQUAH(5)BETHANY(1)EL RENO(4)GUTHRIE(3)MUSTANG(1)PRYOR(5)CHICKASHA(3)WAGONER(5)WOODWARD(3)OKMULGEE(2)DURANT(1)SKIATOOK(2)MIAMI(3)COWETA(2)EUFAULA(4)SPIRO(3)GLENPOOL(1)ELK CITY(3)VINITA(6)BROKEN BOW(3)GUYMON(1)CHECOTAH(6)MARLOW(2)SULPHUR(3)WEATHERFORD(3)MOUNDS(2)POTEAU(3)PAULS VALLEY(3)CLINTON(1)BLACKWELL(3)HENRYETTA(4)HASTINGS(1)CHOUTEAU(2)CUSHING(1)OCHELATA(6)HULBERT(6)FORT GIBSON(5)STILWELL(4)NEWCASTLE(1)GROVE(4)OOLOGAH(1)PERRY(3)PIEDMONT(1)ANTLERS(2)OKEMAH(3)NOWATA(7)IDABEL(1)TISHOMINGO(3)SEMINOLE(1)CLEVELAND(4)ATOKA(3)ANADARKO(1)PURCELL(1)HARTSHORNE(2)MANNFORD(2)MULDROW(3)MEAD(1)TECUMSEH(2)NOBLE(4)MADILL(5)KETCHUM(2)WILBURTON(2)MORRIS(3)STIGLER(2)KELLYVILLE(1)HUGO(2)EARLSBORO(2)ALVA(2)WALTERS(2)CARNEGIE(2)HOLDENVILLE(2)