F0/100
Belle Fourche Tap Water Quality: Is It Safe to Drink? (2026 Report)
Serving 5,617 residents · South Dakota
What's In Belle Fourche'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) | 0.003 mg/L | 0.015 mg/L | Above Goal |
EPA Violation History
No violations in the past 5 years
Full EPA compliance since 2017.
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
BELLE FOURCHE
Population Served
5,617
Water Source
Groundwater
System ID
SD4600037
Frequently Asked Questions About Belle Fourche Water
Is Belle Fourche tap water safe to drink?
Belle Fourche, South Dakota tap water receives a grade of F (0/100), which is considered failing. 0 contaminant(s) exceed EPA maximum contaminant levels and 113 violation(s) are on record. Residents should consider using an NSF-certified water filter to reduce contaminant exposure.
What contaminants are in Belle Fourche's water?
Of the 31 contaminants tested in Belle Fourche'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 Belle Fourche have any water quality violations?
Yes, Belle Fourche has 113 EPA violation(s) on record, with the most recent in 2017. Violation types include MR, MCL. 1 of these are health-based violations, which are the most serious category.
Do I need a water filter in Belle Fourche?
Belle Fourche 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 Belle Fourche's tap water come from?
Belle Fourche's drinking water is sourced from groundwater and supplied by BELLE FOURCHE. The system serves approximately 5,617 people. Groundwater is pumped from underground aquifers, which often provides natural filtration.
How often is Belle Fourche'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. Belle Fourche'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 Belle Fourche's water compare to other cities in South Dakota?
Belle Fourche's water quality score of 0/100 earns a grade of F, which is considered failing. This is a concerning score that suggests significant water quality issues. Visit our South Dakota state page to see how all cities in the state compare.
What should I do if I'm concerned about Belle Fourche's water quality?
If you have concerns about Belle Fourche'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 (BELLE FOURCHE) 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.