Water Quality: Boise, ID

40 water systems • 285,954 people served

Multiple Health Violations
1306
Total Violations
83
Health-Based Violations
40
Water Systems
285,954
Population Served

Water Quality Summary

Boise is served by 40 public water systems with a combined service population of 285,954 people, and has 1,306 EPA Safe Drinking Water Act violations on record. Critically, 83 of those are health-based violations, meaning one or more contaminants were detected above EPA-established safe levels — a serious public health concern. Boise's violation count is 882% above the national average for Idaho. Contaminants associated with violations include Chlorine Dioxide, Disinfection Byproducts, E. coli, Fecal Coliform, Gross Alpha.

Contaminants Found

Chlorine Dioxide

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

Disinfection Byproducts

Broad category of chemicals formed during disinfection, associated with increased cancer risk and adverse reproductive effects.

Common source: Reaction of disinfectants (chlorine, ozone, chloramines) with organic matter

E. coli

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)

Fecal Coliform

Indicates direct fecal contamination; associated with diarrhea, cramps, nausea, and potential severe illness.

Common source: Human and animal fecal waste

EPA limit: Zero tolerance (any positive triggers violations)

Gross Alpha

Alpha-emitting radioactive particles increase cancer risk, particularly from bone and other internal cancers.

Common source: Natural uranium and radium in geological formations

EPA limit: 15 pCi/L (excluding radon and uranium)

Haloacetic Acids

Linked to increased cancer risk and potential reproductive and developmental effects with long-term exposure.

Common source: Reaction of chlorine disinfectants with organic matter in treated water

EPA limit: 0.060 mg/L (60 ppb)

Selenium

Hair loss, nail brittleness, and nervous system damage at elevated concentrations.

Common source: Natural geological deposits, mining discharges, oil refinery waste

EPA limit: 0.05 mg/L (50 ppb)

Stage 2 DBP

Trihalomethanes and haloacetic acids that increase cancer risk and may cause adverse reproductive outcomes.

Common source: Chlorine disinfection reacting with natural organic matter in source water

EPA limit: TTHM: 0.080 mg/L; HAA5: 0.060 mg/L

Total Haloacetic Acids (HAA5)

Haloacetic acids are associated with increased cancer risk and potential reproductive and developmental effects.

Common source: Reaction of chlorine disinfectants with organic matter in treated water

EPA limit: 0.060 mg/L (60 ppb)

Water Systems Serving Boise

System Name PWSID Source Population Violations
VEOLIA WATER IDAHO ID4010016 Surface Water 264,978 248
CAPITOL WATER CORP ID4010022 Groundwater 9,000 49
IDOC SBX COMPLEX ID4010141 Groundwater 3,309 24
IDOC IDAHO STATE CORRECTIONAL CENTER ID4010240 Groundwater 2,204 38
HILLSDALE ESTATES HOMEOWNERS ASSN ID4010218 Groundwater 800 90
RUSTIC ACRES MOBILE HOME PARK ID4010126 Groundwater 540 5
WILDERNESS RANCH OWNERS ASSOCIATION INC ID4080055 Surface Water 525 69
IDOC MOUNTAIN VIEW TRANSFORMATION CENTER ID4010255 Groundwater 456 24
FLYING H TRAILER RANCH ID4010062 Groundwater 430 1
LAKEYS CAFE AND TRAILER PARK ID3140061 Groundwater 300 16
EAGLE GLEN HOMEOWNERS ASSN INC ID4010047 Groundwater 300 2
WYMOSA WATER ASSN INC ID4010161 Groundwater 280 5
PARADISE ESTATES WATER CORP ID4010111 Surface Water 273 67
WEST MEADOWS ESTATES ID4010158 Surface Water 270 4
CANYON CREEK MOBILE HOME PARK ID4200010 Groundwater 243 7
KLUGHERZ WATER CORP ID4010083 Groundwater 200 1
BLACKHAWK ON THE RIVER ID4430105 Groundwater 150 3
MORES CREEK RIM RANCH WATER DIST ID4080029 Surface Water 140 316
RIVERS POINT PROPERTY OWNERS ASSN ID4080037 Surface Water 140 16
EAGLE MHC ID4010123 Groundwater 135 3
LINDA VISTA MOBILE HOME PARK ID4010088 Groundwater 125 10
KRIZVIEW PARK ID4010178 Groundwater 120 18
OSPREY ID4080101 Groundwater 100 22
HAMPTON HOMES HOME OWNERS ASSN ID4010071 Groundwater 95 2
FRANKLIN DOMESTIC WATER USERS ID4010064 Groundwater 75 20
STANLEY POND INC ID4010139 Groundwater 72 9
ISLAND VILLAGE MOBILE HOME PARK ID4010076 Groundwater 70 18
MALAD AND HILTON WATER COMPANY INC. ID4010092 Groundwater 70 1
RANCH SUBD ID4080036 Groundwater 65 4
MOUNTAIN SAGE ID4200073 Groundwater 65 79
PIONEER MOBILE HOME PARK LLC ID3370035 Groundwater 53 22
DANSKIN PROPERTIES ASSOCIATION INC ID4200091 Groundwater 52 3
CHRISTIS MOBILE PARK ID3140142 Groundwater 50 3
AMY TRAILER PARK ID4010068 Groundwater 46 4
MOUNTAIN VIEW ESTATES ID1400088 Groundwater 43 7
H AND L PARK ID3140060 Groundwater 43 0
ANDERSON CIRCLE WATER CORP ID4010005 Groundwater 40 4
BOISE HOLCOMB WATER USERS ASSOC. INC ID4080004 Groundwater 36 4
RIM ACRES MUTUAL WATER ID4010122 Groundwater 31 83
RILEY TRAILER PARK ID4010121 Groundwater 30 5

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 Idaho

Meridian 84 violations • 148,669 served Nampa 1154 violations • 104,636 served Idaho Falls 801 violations • 96,603 served Caldwell 922 violations • 77,542 served Pocatello 1450 violations • 59,491 served Coeur D Alene 354 violations • 56,446 served Twin Falls 99 violations • 56,296 served Post Falls 512 violations • 42,169 served

View all cities in Idaho →

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.

Verify at epa.gov • Search ECHO for ID