Atrazine in Colorado Drinking Water
146 public water systems in Colorado have historical EPA violation records associated with atrazine in the Q2 2026 snapshot.
227
Historical Records in Colorado
146
Systems With Records
About Atrazine
- EPA Limit
- 3 ppb
- Category
- Organic
- Health Effects
- Cardiovascular system and reproductive problems
- Common Treatment Approaches
- Granular activated carbon
Colorado Systems With the Most Atrazine Records
HOT SPRINGS COURT
55 served4 historical records
D
ARAPAHOE COMM WATER SYSTEM
4,100 served4 historical records
B
ROSEBUD RURAL WATER SYSTEM
5,500 served2 historical records
B
DAKOTA MAGIC CASINO
2,360 served2 historical records
D
MNIHNAPA WATER SYSTEM
220 served2 historical records
A
WHITEROCKS WATER SYSTEM
812 served2 historical records
B
URIAH HEEPS SPRING WATER SYSTEM
3,750 served2 historical records
D
FORT THOMPSON WATER SYSTEM
1,357 served1 historical record
B
ARAPAHOE INDUSTRIAL PARK
650 served1 historical record
B
BELCOURT-TURTLE MTN RURAL WATER SYSTEM
13,500 served1 historical record
D
AMERICAN HORSE SCHOOL
400 served1 historical record
B
FRAZER WATER SYSTEM
452 served1 historical record
B
WOUNDED KNEE DISTRICT SCHOOL
280 served1 historical record
D
WHITE MESA WATER SYSTEM
300 served1 historical record
C
ROCKY BOY AGENCY WATER SYSTEM
1,442 served1 historical record
C
OLD HAYS
80 served1 historical record
A
ETHETE WATER SYSTEM
1,950 served1 historical record
C
FOUR BEARS WATER SYSTEM
1,200 served1 historical record
C
These counts describe historical compliance records, not present concentrations or household test results. Confirm current conditions with the utility's latest Consumer Confidence Report.