Haloacetic Acids (HAA5) in Colorado Drinking Water
233 public water systems in Colorado have historical EPA violation records associated with haloacetic acids (haa5) in the Q2 2026 snapshot.
572
Historical Records in Colorado
233
Systems With Records
About Haloacetic Acids (HAA5)
- EPA Limit
- 60 ppb
- Category
- Disinfection Byproducts
- Health Effects
- Increased cancer risk
- Common Treatment Approaches
- Activated carbon filters
Colorado Systems With the Most Haloacetic Acids (HAA5) Records
FORT BELKNAP AGENCY WATER SYSTEM
2,600 served7 historical records
F
FORT THOMPSON WATER SYSTEM
1,357 served6 historical records
B
ETHETE WATER SYSTEM
1,950 served6 historical records
C
TOWAOC WATER SYSTEM
2,020 served5 historical records
D
POTATO CREEK WATER SYSTEM
95 served4 historical records
C
WHITEROCKS WATER SYSTEM
812 served4 historical records
B
URIAH HEEPS SPRING WATER SYSTEM
3,750 served4 historical records
D
FORT WASHAKIE
2,620 served4 historical records
B
WOUNDED KNEE DISTRICT SCHOOL
280 served3 historical records
D
SEVILLE WATER SYSTEM
300 served3 historical records
C
HEART BUTTE SCHOOL
250 served3 historical records
C
CROW CREEK TRIBAL SCHOOL
516 served3 historical records
C
SICANGU MNI WICONI RURAL WATER SYSTEM
5,610 served2 historical records
C
AMERICAN HORSE SCHOOL
400 served2 historical records
B
STANDING ROCK RURAL WATER SYSTEM
6,839 served2 historical records
C
DAKOTA MAGIC CASINO
2,360 served2 historical records
D
WOUNDED KNEE WATER SYSTEM
255 served2 historical records
C
WANBLEE WATER SYSTEM
773 served2 historical records
B
WHITE SHIELD WATER TREATMENT PLANT
952 served2 historical records
A
BLACKFEET DORM. WATER SYSTEM
66 served1 historical record
A
These counts describe historical compliance records, not present concentrations or household test results. Confirm current conditions with the utility's latest Consumer Confidence Report.