Nitrate in Colorado Drinking Water
280 public water systems in Colorado have historical EPA violation records associated with nitrate in the Q2 2026 snapshot.
648
Historical Records in Colorado
280
Systems With Records
About Nitrate
- EPA Limit
- 10000 ppb
- Category
- Inorganic
- Health Effects
- Blue baby syndrome in infants under six months
- Common Treatment Approaches
- Reverse osmosis, ion exchange
Colorado Systems With the Most Nitrate Records
WHITE MESA WATER SYSTEM
300 served3 historical records
C
URIAH HEEPS SPRING WATER SYSTEM
3,750 served3 historical records
D
ARAPAHOE INDUSTRIAL PARK
650 served1 historical record
B
CROW AGENCY WATER SYSTEM
2,057 served1 historical record
C
AMERICAN HORSE SCHOOL
400 served1 historical record
B
WOUNDED KNEE DISTRICT SCHOOL
280 served1 historical record
D
BEDROCKBABB WATER SYSTEM
645 served1 historical record
C
PEEVER FLATS WATER SYSTEM
129 served1 historical record
A
RED IRON LAKE WATER SYSTEM
95 served1 historical record
A
LONG HOLLOW WATER SYSTEM
265 served1 historical record
A
MNIHNAPA WATER SYSTEM
220 served1 historical record
A
HAYS/WHITE COW CANYON WS
840 served1 historical record
A
FORT BELKNAP AGENCY WATER SYSTEM
2,600 served1 historical record
F
ETHETE WATER SYSTEM
1,950 served1 historical record
C
ARAPAHOE COMM WATER SYSTEM
4,100 served1 historical record
B
WHITEROCKS WATER SYSTEM
812 served1 historical record
B
FORT WASHAKIE
2,620 served1 historical record
B
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.