A99/100
Dallas Center Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 1,901 residents · Iowa
What's In Dallas Center's Tap Water?
21
Contaminants Tested
0
Exceed EPA Limits
0
Above EPA Goals
EPA Violation History
1
Violation (last 5yr)
0
Unresolved
0
Health-Related
TIER 3Resolved
Monitoring Violation
This is a paperwork/process violation — it does not mean a contaminant was detected at unsafe levels.
When: October 1, 2023 – October 31, 2023Rule: Total Coliform RuleEnforcement: 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
DALLAS CENTER WATER SUPPLY
Population Served
1,901
Water Source
Groundwater
System ID
IA2520098
Frequently Asked Questions About Dallas Center Water
Is Dallas Center tap water safe to drink?
Dallas Center, Iowa tap water receives a grade of A (99/100), which is considered excellent. Out of 21 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 Dallas Center's water?
21 contaminants were tested in Dallas Center's water supply. No contaminants exceed EPA legal limits (MCLs) or health goals (MCLGs), which is a positive indicator of water quality.
Does Dallas Center have any water quality violations?
Yes, Dallas Center has 1 EPA violation(s) on record, with the most recent in 2023. Violation types include MON. None of these are classified as health-based violations.
Do I need a water filter in Dallas Center?
Dallas Center 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 Dallas Center's tap water come from?
Dallas Center's drinking water is sourced from groundwater and supplied by DALLAS CENTER WATER SUPPLY. The system serves approximately 1,901 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Dallas Center'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. Dallas Center'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 Dallas Center's water compare to other cities in Iowa?
Dallas Center's water quality score of 99/100 earns a grade of A, which is considered excellent. This places Dallas Center 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 Dallas Center's water quality?
If you have concerns about Dallas Center'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 (DALLAS CENTER 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.