A92/100
Rockwell City Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 2,250 residents · Iowa
What's In Rockwell City's Tap Water?
1
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
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Surface water treatment technique failure
When: July 1, 2024 – August 27, 2024Enforcement: Resolving — corrective action underway
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
ROCKWELL CITY WATER SUPPLY
Population Served
2,250
Water Source
Groundwater
System ID
IA1376098
Frequently Asked Questions About Rockwell City Water
Is Rockwell City tap water safe to drink?
Rockwell City, Iowa tap water receives a grade of A (92/100), which is considered excellent. Out of 1 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 Rockwell City's water?
Of the 1 contaminants tested in Rockwell City'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 Rockwell City have any water quality violations?
Yes, Rockwell City has 5 EPA violation(s) on record, with the most recent in 2024. Violation types include Other, MR. None of these are classified as health-based violations.
Do I need a water filter in Rockwell City?
Rockwell City 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 Rockwell City's tap water come from?
Rockwell City's drinking water is sourced from groundwater and supplied by ROCKWELL CITY WATER SUPPLY. The system serves approximately 2,250 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Rockwell City'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. Rockwell City'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 Rockwell City's water compare to other cities in Iowa?
Rockwell City's water quality score of 92/100 earns a grade of A, which is considered excellent. This places Rockwell City among the better-performing water systems in Iowa. Visit our Iowa state page to see how all cities in the state compare.
What should I do if I'm concerned about Rockwell City's water quality?
If you have concerns about Rockwell City'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 (ROCKWELL CITY WATER SUPPLY) 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.