Water Quality in Gillette, WY (82831)

EPA violation data for public water systems serving ZIP code 82831.

No Health-Based Violations

None of the 5 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are2 monitoring/reporting violations (missed testing deadlines), all resolved.

Better than 36% of US ZIP codes.

Based on EPA compliance data. Not a substitute for an official water quality report from your utility.

153

Population

5

Water Systems

2

Violations (5yr)

0

Health-Based

Location

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Water Systems Serving This Area (5)

Gillette, City Of

All resolved
Groundwater 32,222 people served
2 violations (5yr) · All resolved
Lead tested: 4 ppb (limit: 15 ppb)

Sheridan, City Of

Surface water 22,700 people served
0 violations

Arvada School

Groundwater 31 people served
0 violations

Spotted Horse Bar

Groundwater 25 people served
0 violations

Arvada Mobile Home Park

Groundwater 0
0 violations

Contaminants Found

ChlorineMonitoring

Used to disinfect water — generally safe at regulated levels.

1 violation
All resolved
Revised Total Coliform RuleMonitoring

Missed testing deadlines — not a detection of bacteria.

1 violation
All resolved

Lead & Copper Levels

Lead (Pb)

Within limit
4 ppb measured Action level: 15 ppb

Sampled: Jan 2025

How Does This Compare?

Gillette (82831) has more violations than 36% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 2, most of which are monitoring/reporting issues.

Fewer violations 36th percentile More violations

Water Filter Recommendations

No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.

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