A88/100
Cascade Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 2,386 residents · Iowa
What's In Cascade's Tap Water?
1
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2010.
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
CASCADE MUNICIPAL WATER SUPPLY
Population Served
2,386
Water Source
Groundwater
System ID
IA3118080
Frequently Asked Questions About Cascade Water
Is Cascade tap water safe to drink?
Cascade, Iowa tap water receives a grade of A (88/100), which is considered excellent. Out of 1 contaminants tested, none exceed EPA maximum contaminant levels (MCLs). While the water meets federal standards, some residents may still choose to use a filter for additional peace of mind.
What contaminants are in Cascade's water?
1 contaminants were tested in Cascade's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Cascade have any water quality violations?
Yes, Cascade has 12 EPA violation(s) on record, with the most recent in 2010. Violation types include MR. None of these are classified as health-based violations.
Do I need a water filter in Cascade?
Cascade 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 Cascade's tap water come from?
Cascade's drinking water is sourced from groundwater and supplied by CASCADE MUNICIPAL WATER SUPPLY. The system serves approximately 2,386 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Cascade'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. Cascade'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 Cascade's water compare to other cities in Iowa?
Cascade's water quality score of 88/100 earns a grade of A, which is considered excellent. This places Cascade 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 Cascade's water quality?
If you have concerns about Cascade'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 (CASCADE MUNICIPAL 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.