Water Quality: Holbrook, AZ
3 water systems • 5,705 people served
Multiple Health ViolationsWater Quality Summary
Holbrook is served by 3 public water systems with a combined service population of 5,705 people, and has 246 EPA Safe Drinking Water Act violations on record. Critically, 6 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Holbrook's violation count is 35% below the national average for Arizona. Contaminants associated with violations include Chlorine Dioxide, E. coli, TTHM.
Contaminants Found
Can cause anemia in infants and young children; may cause nervous system effects at high levels.
Common source: Water treatment disinfectant used to control taste, odor, and microorganisms
EPA limit: 0.8 mg/L
Causes gastrointestinal illness; certain strains (e.g., O157:H7) can cause severe kidney failure and death.
Common source: Fecal contamination from humans or animals entering the water supply
EPA limit: Zero (no E. coli permitted in drinking water)
Total trihalomethanes are linked to increased risk of bladder cancer and adverse reproductive outcomes.
Common source: Reaction of chlorine disinfectants with naturally occurring organic matter in water
EPA limit: 0.080 mg/L (80 ppb)
Water Systems Serving Holbrook
| System Name | PWSID | Source | Population | Violations |
|---|---|---|---|---|
| HOLBROOK CITY OF | AZ0409015 | Groundwater | 5,318 | 92 |
| SUN VALLEY UTILITIES | AZ0409001 | Groundwater | 287 | 116 |
| HOLBROOK SDA INDIAN SCHOOL | AZ0409046 | Groundwater | 100 | 38 |
Concerned About Your Water?
A home water filter can remove common contaminants. NSF-certified filters are tested against EPA standards.
Consider a reverse osmosis system for comprehensive filtration or a carbon filter for basic improvement.
Other Cities in Arizona
Data Sources
Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). Data includes all recorded violations for active community water systems.