CAPITOL WATER CORP
PWSID: ID4010022 · Boise, ID · Serves 9,000 people
CAPITOL WATER CORP has 7 health-based violations out of 7 total. Health violations indicate contaminant levels exceeded EPA limits or required treatment was not followed.
CAPITOL WATER CORP (PWSID ID4010022) is a cws water system drawing from a groundwater source, regulated by the EPA Safe Drinking Water Information System (SDWIS) under the Safe Drinking Water Act. It serves approximately 9,000 people in Boise, ID, and is subject to primacy enforcement by the Idaho drinking-water program.
The system's federal compliance record contains 7 total violations, with 7 classified as health-based (MCL exceedances or treatment-technique failures). 3 distinct contaminants have been cited, including Lead (Action Level), Gross Alpha, Fluoride. Recorded violations span 2014–2025.
A historical violation does not necessarily describe current water quality, systems must notify customers and remediate, and monitoring-type violations often reflect reporting lapses rather than contamination. The most authoritative real-time source is the utility's annual Consumer Confidence Report. For enforcement history and corrective-action orders, consult EPA ECHO and the Idaho state drinking-water program's public portal.
System Details
- EPA ID (PWSID)
- ID4010022
- System Type
- CWS
- Water Source
- Groundwater
- Location
- Boise, ID
- Population Served
- 9,000
- Health Violations
- Yes (7)
What contaminants are in this water system?
| Contaminant | Violations | Health-Based |
|---|---|---|
| Lead (Action Level) | 4 | 4 |
| Gross Alpha | 2 | 2 |
| Fluoride | 1 | 1 |
Violation History (7)
| Contaminant | Health | Date |
|---|---|---|
| Lead (Action Level) | Yes | Apr 1, 2025 |
| Lead (Action Level) | Yes | Apr 1, 2025 |
| Lead (Action Level) | Yes | Jan 1, 2025 |
| Lead (Action Level) | Yes | Jan 1, 2025 |
| Gross Alpha | Yes | Oct 17, 2024 |
| Gross Alpha | Yes | Oct 17, 2024 |
| Fluoride | Yes | Jan 1, 2014 |
Frequently Asked Questions
Is CAPITOL WATER CORP water safe to drink?
How many people does CAPITOL WATER CORP serve?
What violations does CAPITOL WATER CORP have?
What contaminants have been found in CAPITOL WATER CORP water?
Nearby Water Systems
Explore More
About This Data
Water system data is from the EPA Safe Drinking Water Information System (SDWIS). Health-based violations include Maximum Contaminant Level (MCL) and Treatment Technique (TT) violations that may pose a direct risk to public health. Violation records may span multiple years.
Source: U.S. Environmental Protection Agency, SDWIS Federal Reporting Services U.S. Environmental Protection Agency, SDWIS Federal Reporting Services
Read our methodology - how this data is sourced, computed, and verified.