Water Service Outages in Idaho by City
92% of Idaho's 765 community water systems serve 3,300 people or fewer, so many outages and boil water notices affect a single small town or subdivision.
Idaho drinking water record
Busiest year: 2024 (155 violations). Counted by the year the violation period began. Source: EPA SDWIS.
- Community water systems: 765 active systems serve about 1,568,464 people. 707 of them (92%) serve 3,300 people or fewer; 698 draw mainly on groundwater and 62 on surface water.
- Health-based violations since 2015: 1,172, at 262 systems (34% of all systems). That share is 27th of 50 states (1 = lowest).
- Most common problems: contaminant averages over the limit (344); uncorrected Ground Water Rule deficiencies (308); contaminant readings over the limit (73). Source: EPA SDWIS
- Largest system: Veolia Water Idaho, about 264,978 people, with 0 health-based violations since 2015. Source: EPA SDWIS
- Housing age: the median Idaho home was built in 1991 (US 1980). Source: US Census Bureau, ACS 2020–2024 (table B25035)
- Storm damage to water service: NOAA storm narratives mention water mains, boil water notices or lost water service in 1 episodes in Idaho since 2015. Source: NOAA Storm Events Database
- April 9, 2019, Lewis (flood): “Flood waters also partially inundated a lumber yard, undermined a railroad grade and trestle crossing Lawyer Creek and high water prohibited access to the city's water plant.” Source: NOAA Storm Events Database
| System | People served | Main source | Health violations since 2015 |
|---|---|---|---|
| Veolia Water Idaho | 264,978 | Surface water | 0 |
| Meridian Water Dept | 147,340 | Groundwater | 0 |
| Nampa City Of | 100,200 | Groundwater | 0 |
| Caldwell City Of | 74,000 | Groundwater | 0 |
| Idaho Falls City Of | 69,450 | Groundwater | 0 |
| Pocatello City Of | 58,231 | Groundwater | 1 |
Source: EPA SDWIS.
Idaho is 3rd of 7 (1 = lowest share). Source: EPA SDWIS.
Checked September 2026.
Who to call in Idaho, city by city
4 Idaho cities on this site and the water utility for each. What to do while you wait is in our water service outage guide.
- Boise Veolia Water Idaho
- Meridian City of Meridian Public Works
- Nampa City of Nampa Public Works
- Idaho Falls Idaho Falls Water Division
Frequently asked questions
Is there a water service outage in Idaho right now?
Not on this site: no reports from Idaho in the last 24 hours.
How many public water systems are in Idaho?
EPA records list 765 active community water systems in Idaho, serving about 1,568,464 people. 92% serve 3,300 people or fewer.
How common are drinking water violations in Idaho?
Since 2015, 262 of 765 community water systems in Idaho (34%) have had at least one health-based violation, 1,172 in total.
What is the largest water system in Idaho?
Veolia Water Idaho, which EPA records list as serving about 264,978 people.
Report counts are user-submitted; other figures name their official source. How our data works
Cities in Idaho with Water Service Outages Information
Idaho Falls
no reports in the last 24 hours · pop. 64,718
Idaho Falls Water Division
Meridian
no reports in the last 24 hours · pop. 117,635
City of Meridian Public Works
Nampa
no reports in the last 24 hours · pop. 100,815
City of Nampa Public Works