EPA lists 2 water systems for ZIP 57625 in the Eagle Butte, SD area. A ZIP is a postal boundary, not a service area, so the name on your water bill decides which record applies.
Each card shows that system’s own record, never a blend. Pick one to see its full results below.
Results describe the water system, not a specific tap in ZIP 57625. Each bar marks the listed reference for that substance.
Not measured: no utility report on file. Hardness affects fixtures and appliances, not health.
Below each lab’s reporting limit. A result, not zero, and it covers only what was tested.
One result is above its listed reference. Lead mostly enters from building plumbing, which this system-level record can’t see.
Every finding for this system, with its source.
Open system record →Depends on the contaminant. Check for The certifier's listing for each named contaminant.
See treatment →The only way to see what your building adds.
How to test →Screening tells you if something is worth a closer look; a lab result is the number you can act on.
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Screening: quick check, not lab-grade
Silver Lake Research
Lead, bacteria, nitrate, copper, iron, chlorine, hardness and pH
What it can't tell you: Each test gives a yes/no or a rough range, not a lab number, and it cannot detect PFAS or arsenic.
Lab-certified results
ETR Laboratories
50+ substances, including lead, copper, arsenic, nitrate, hardness and coliform bacteria
What it can't tell you: It does not test PFAS, and not every result on the panel falls under the lab's accredited scope.
When your results arrive, read them here →
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2 public systems are on record for ZIP 57625 (Eagle Butte, SD): Eagle Butte, Tri-County Rural Water System. A ZIP is a postal boundary, not a service area. Confirm your supplier on your water bill.
ZIP 57625 falls within the Eagle Butte, SD area, but a ZIP code can span more than one utility. Read the serving system's own record for the results that apply to your address.
Check the utility name on your water bill, or resolve it from your street address with Find My Water. The ZIP-level view lists candidate systems, not a confirmed household match.