A82/100
GRANGER MUNI WATER SUPPLY — Water Quality Report 2026
Serving 1,654 people · Iowa
Water Source
Groundwater
County
—
System ID
IA2537001
Violations
6
Contaminant Test Results
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Copper (90th percentile) | 1.40 mg/L | 1.30 mg/L | Over Limit |
EPA Violation History
2
Violations (last 5yr)
1
Unresolved
0
Health-Related
TIER 3Resolved
Exceeded the MCL for disinfection byproducts
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: January 1, 2024 – March 31, 2024Enforcement: Resolving — corrective action underway
TIER 3Unresolved
Disinfection byproduct treatment technique failure
When: April 26, 2021Rule: Ground Water RuleEnforcement: 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
Frequently Asked Questions About GRANGER MUNI WATER SUPPLY
Is GRANGER MUNI WATER SUPPLY water safe to drink?
GRANGER MUNI WATER SUPPLY water receives a grade of A (82/100), which is considered excellent. Out of 2 contaminants tested, 1 exceed EPA legal limits. 1 contaminant(s) exceed non-enforceable health goals. The water meets federal safety standards.
What contaminants has GRANGER MUNI WATER SUPPLY detected?
2 contaminants were tested in GRANGER MUNI WATER SUPPLY's water. Notable contaminants include Copper (90th percentile). 1 exceed EPA legal limits (MCLs). 1 exceed EPA health goals (MCLGs).
Does GRANGER MUNI WATER SUPPLY have any EPA violations?
Yes, GRANGER MUNI WATER SUPPLY has 6 EPA violation(s) on record, with the most recent in 2024. Violation types include MR, Other, MON. 1 are health-based violations.
How many people does GRANGER MUNI WATER SUPPLY serve?
GRANGER MUNI WATER SUPPLY serves approximately 1,654 people, Iowa. The system provides water to 1 community: Granger.
What type of water does GRANGER MUNI WATER SUPPLY provide?
GRANGER MUNI WATER SUPPLY sources its water from groundwater. Groundwater is pumped from underground aquifers, which often provides natural filtration. The utility's system ID is IA2537001.
How does GRANGER MUNI WATER SUPPLY compare to other utilities in Iowa?
GRANGER MUNI WATER SUPPLY scores 82/100 with a grade of A (excellent). This places it among the higher-performing utilities in the state. Visit our Iowa state page for a full comparison of water systems.