B77/100
Cedar Rapids Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 141,831 residents · Iowa
What's In Cedar Rapids's Tap Water?
76
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.002 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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
CEDAR RAPIDS WATER DEPARTMENT
Population Served
141,831
Water Source
Groundwater Under Influence of Surface Water
System ID
IA5715093
Frequently Asked Questions About Cedar Rapids Water
Is Cedar Rapids tap water safe to drink?
Cedar Rapids, Iowa tap water receives a grade of B (77/100), which is considered good. Out of 76 contaminants tested, none exceed EPA maximum contaminant levels (MCLs) and 1 exceed health guidelines (MCLGs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Cedar Rapids's water?
Of the 76 contaminants tested in Cedar Rapids's water supply, the most notable include Lead (90th percentile). No contaminants exceed EPA legal limits. 1 contaminant(s) exceed EPA health goals (MCLGs), which are non-enforceable targets set at levels with no known health risk.
Does Cedar Rapids have any water quality violations?
Yes, Cedar Rapids has 8 EPA violation(s) on record, with the most recent in 2017. Violation types include MON, TT, MR. 3 of these are health-based violations, which are the most serious category.
Do I need a water filter in Cedar Rapids?
Cedar Rapids 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. 1 contaminant(s) exceed these stricter goals.
Where does Cedar Rapids's tap water come from?
Cedar Rapids's drinking water is sourced from groundwater under influence of surface water and supplied by CEDAR RAPIDS WATER DEPARTMENT. The system serves approximately 141,831 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Cedar Rapids'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. Cedar Rapids'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 Cedar Rapids's water compare to other cities in Iowa?
Cedar Rapids's water quality score of 77/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our Iowa state page to see how all cities in the state compare.
What should I do if I'm concerned about Cedar Rapids's water quality?
If you have concerns about Cedar Rapids'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 (CEDAR RAPIDS WATER DEPARTMENT) 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.