C59/100
Weiser Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,630 residents · Idaho
What's In Weiser's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
2
Violations (last 5yr)
2
Unresolved
0
Health-Related
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
TIER 3Unresolved
Failed Level 2 Assessment under Revised Total Coliform Rule
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: July 1, 2024 – September 30, 2024Rule: Stage 2 DBPREnforcement: Informal — resolved cooperativelyVerify on EPA.gov
Understanding violation severity
Tier 1Urgent health risk. Utility must notify all customers within 24 hours.Tier 2Important health or treatment issue. Customers notified within 30 days.Tier 3Administrative or monitoring issue. Reported in the annual water quality report.
Source: EPA Safe Drinking Water Information System (SDWIS) · Updated quarterly
Water Utility Details
WEISER CITY OF
Population Served
5,630
Water Source
Surface Water
System ID
ID3440011
Frequently Asked Questions About Weiser Water
Is Weiser tap water safe to drink?
Weiser, Idaho tap water receives a grade of C (59/100), which is considered fair. 0 contaminant(s) exceed EPA maximum contaminant levels and 41 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Weiser's water?
31 contaminants were tested in Weiser's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Weiser have any water quality violations?
Yes, Weiser has 41 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, MON. None of these are classified as health-based violations.
Do I need a water filter in Weiser?
Weiser water meets EPA standards, so a filter is not strictly necessary. However, some residents prefer the added security of a water filter. EPA health goals (MCLGs) are stricter than legal limits and are set at levels with zero expected health risk. All contaminants are within health goals.
Where does Weiser's tap water come from?
Weiser's drinking water is sourced from surface water and supplied by WEISER CITY OF. The system serves approximately 5,630 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Weiser's water tested?
Under the Safe Drinking Water Act (SDWA), water utilities are required to regularly test for over 90 contaminants. Testing frequency varies by contaminant — some are tested monthly, others quarterly or annually. Weiser's water systems must report results to the EPA and publish an annual Consumer Confidence Report (CCR). The data on this page reflects the latest available EPA testing data.
How does Weiser's water compare to other cities in Idaho?
Weiser's water quality score of 59/100 earns a grade of C, which is considered fair. This is a below-average score that indicates room for improvement. Visit our Idaho state page to see how all cities in the state compare.
What should I do if I'm concerned about Weiser's water quality?
If you have concerns about Weiser's tap water, consider these steps: (1) Request your utility's annual Consumer Confidence Report for detailed local data. (2) Get your water independently tested through a state-certified laboratory. (3) Consider an NSF-certified water filter rated for the contaminants found in your area. (4) Contact your water utility (WEISER CITY OF) with specific questions. (5) Report water quality issues to your state drinking water program or the EPA Safe Drinking Water Hotline at 800-426-4791.