B75/100
Ellsworth Afb Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 9,100 residents · South Dakota
What's In Ellsworth Afb's Tap Water?
31
Contaminants Tested
0
Exceed EPA Limits
1
Above EPA Goals
1 contaminant above EPA health goals
| Contaminant | Detected | Limit (MCL) | Status |
|---|---|---|---|
Lead (90th percentile) | 0.001 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2014.
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
ELLSWORTH AFB
Population Served
9,100
Water Source
Purchased Surface Water
System ID
SD4680004
Frequently Asked Questions About Ellsworth Afb Water
Is Ellsworth Afb tap water safe to drink?
Ellsworth Afb, South Dakota tap water receives a grade of B (75/100), which is considered good. Out of 31 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 Ellsworth Afb's water?
Of the 31 contaminants tested in Ellsworth Afb'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 Ellsworth Afb have any water quality violations?
Yes, Ellsworth Afb has 6 EPA violation(s) on record, with the most recent in 2014. Violation types include MCL, Other, MR. 4 of these are health-based violations, which are the most serious category.
Do I need a water filter in Ellsworth Afb?
Ellsworth Afb 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 Ellsworth Afb's tap water come from?
Ellsworth Afb's drinking water is sourced from purchased surface water and supplied by ELLSWORTH AFB. The system serves approximately 9,100 people. Surface water sources include rivers, lakes, and reservoirs.
How often is Ellsworth Afb'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. Ellsworth Afb'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 Ellsworth Afb's water compare to other cities in South Dakota?
Ellsworth Afb's water quality score of 75/100 earns a grade of B, which is considered good. This is an above-average score compared to many cities nationwide. Visit our South Dakota state page to see how all cities in the state compare.
What should I do if I'm concerned about Ellsworth Afb's water quality?
If you have concerns about Ellsworth Afb'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 (ELLSWORTH AFB) 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.