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Tap water quality report

South End Water Users S&I District

EPA monitoring tested this supplier for 3 contaminants and detected 3. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

3
contaminants tested
3
detected
150
people served
4
health-based violations
Wyoming rankingsLead in WyomingPFAS in Wyoming
Water source
GWP
Ownership
Local government
Counties served
Big Horn

Compliance record

Formal violations the EPA has on file for this supplier. A health-based violation means a contaminant limit or a required treatment was breached; the rest are monitoring or reporting failures — still violations, but not a measured health risk.

4
health-based violations
22
violations on file
5
still open
ViolationTypeStatusPeriod
MCL Health-based Archived 1992-08-01 → 1992-08-31
MCL Health-based Archived 1992-08-01 → 1992-08-31
MCL Health-based Archived 1992-07-01 → 1992-07-31
MCL Health-based Archived 1992-07-01 → 1992-07-31
Other Monitoring Unaddressed 2025-10-01
Other Monitoring Unaddressed 2025-09-29
Other Monitoring Unaddressed 2025-07-01
MR Monitoring Addressed 2024-12-30
Other Monitoring Unaddressed 2024-10-02
MR Monitoring Resolved 2023-10-01

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
127.5 µg/L 9.8%
of the EPA limit 1300 µg/L
worst single sample: 131 µg/L
15/15 SYR4 2015–2019
Lead
0.0 mg/L 0%
of the EPA limit 0.0150 mg/L
 8/8 LCR 2025
Lead
5.7 µg/L 38%
of the EPA limit 15 µg/L
worst single sample: 6 µg/L
4/15 SYR4 2015–2019

Utility contact

Contact
BROST, TUFFY
Phone
307-548-2377
Email
[email protected]

Frequently asked questions about South End Water Users S&I District

Is South End Water Users S&I District tap water safe to drink?

EPA monitoring detected 3 contaminants in South End Water Users S&I District's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in South End Water Users S&I District's water?

EPA monitoring detected Copper, Lead, Lead. The full list with the level and data source for each is above.

How many people does South End Water Users S&I District serve?

South End Water Users S&I District reports serving 150 people in Wyoming, per its EPA record.

Has South End Water Users S&I District had any water quality violations?

The EPA has 22 violations on file for South End Water Users S&I District, of which 4 are health-based (a contaminant limit or required treatment was breached) and 5 remain open. The rest are monitoring or reporting failures.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.