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Sweetwater County, WY Water Quality

Water quality data for 12 public water systems serving Sweetwater County, Wyoming — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 12 water systems · 14 cities
✅
Excellent — All Systems Performing Well

Water quality across the county is outstanding with minimal violations and very low lead levels.

A

Sweetwater County Earns a A

Sweetwater County: 14 communities across 12 water systems. 85.7% have no open violations.

  • Median lead where detected: 3.00 ppb
  • 11 communities with a lead detection, 3 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 1 with significant inspection deficiencies
  • 85.7% of communities have no open violations
3 ppb
Median Lead Level
County-wide, 90th percentile
12
Water Systems
Active CWS & NTNCWS
85%
Violation-Free
No active violations on record
How we grade counties: MyWaterIQ uses EPA SDWIS enforcement data — actual MCL violations and lead test results — not the aspirational MCLG targets used by some sites. A grade reflects real compliance history, not theoretical risk. Learn more →

Cities by Water Quality

⭐ Best Performing
⚠ Needs Attention
  • Point of Rocks
    Not detected
    1 violation currently open
    D
  • Superior
    3.00 ppb
    2 violations currently open
    C
  • Bairoil
    Not detected
    Copper above the 1,300 ppb action level
    B
  • Granger
    2.00 ppb
    4 health-based violations since 2015
    B
  • Little America
    4.00 ppb
    24 health-based violations since 2015
    B
County Lead Level — Median 3 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 3 ppb — 20% of the federal action level
Systems by Lead Level
Under 5 ppb
11
No Data
3

All Cities in Sweetwater County

Rock Springs 3.00 ppb A
Green River 2.00 ppb A
North Rock Springs 2.00 ppb B
Clearview Acres 3.00 ppb B
Reliance 3.00 ppb A
James Town Not detected B
Purple Sage 3.00 ppb A
Wamsutter 2.00 ppb B
Superior 3.00 ppb C
Granger 2.00 ppb B
Bairoil Not detected B
Point of Rocks Not detected D
Farson 1.00 ppb B
Little America 4.00 ppb B
Showing 14 cities
No active violations Active violations

About Sweetwater County Drinking Water

Sweetwater County is served by 12 water systems covering 14 communities. 86% have no open violations.

Of the communities reporting lead results, 11 recorded a detection, with a median of 3.00 ppb — 20% of the federal action level. 3 reported none detected, which means below the laboratory limit rather than an absence of lead.

No community here has PFAS above the federal limit on record. State inspectors recorded significant deficiencies at 1 of them.

Frequently Asked Questions

Is Sweetwater County tap water safe to drink?▼
86% of communities have no open violation. No community has PFAS above the federal limit on record.
What is the lead level in Sweetwater County?▼
Among communities with a detection the median is 3.00 ppb, 20% of the 15 ppb action level. 3 reported none detected and 0 reported no result.
How many water systems serve Sweetwater County?▼
12 community water systems serve 14 communities here.
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