D23/100
El Dorado Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 16,999 residents · Kansas
What's In El Dorado's Tap Water?
69
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.005 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2020.
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
BUTLER CO RWD 2
Population Served
1,534
Water Source
Purchased Surface Water
System ID
KS2001505
BUTLER CO RWD 6
Population Served
2,655
Water Source
Purchased Surface Water
System ID
KS2001530
EL DORADO, CITY OF
Population Served
12,810
Water Source
Surface Water
System ID
KS2001511
Frequently Asked Questions About El Dorado Water
Is El Dorado tap water safe to drink?
El Dorado, Kansas tap water receives a grade of D (23/100), which is considered poor. 0 contaminant(s) exceed EPA maximum contaminant levels and 102 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in El Dorado's water?
Of the 69 contaminants tested in El Dorado'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 El Dorado have any water quality violations?
Yes, El Dorado has 102 EPA violation(s) on record, with the most recent in 2025. Violation types include MR, MON, Other. 32 of these are health-based violations, which are the most serious category.
Do I need a water filter in El Dorado?
El Dorado 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 El Dorado's tap water come from?
El Dorado's drinking water is sourced from purchased surface water and supplied by BUTLER CO RWD 2 and 2 other water system(s). The system serves approximately 16,999 people. Surface water sources include rivers, lakes, and reservoirs.
How often is El Dorado'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. El Dorado'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 El Dorado's water compare to other cities in Kansas?
El Dorado's water quality score of 23/100 earns a grade of D, which is considered poor. This is a concerning score that suggests significant water quality issues. Visit our Kansas state page to see how all cities in the state compare.
What should I do if I'm concerned about El Dorado's water quality?
If you have concerns about El Dorado'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 (BUTLER CO RWD 2) 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.