States › California › Placer County

Placer County, CA Water Quality

Water quality data for 13 public water systems serving Placer County, California — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 13 water systems · 19 cities
✅
Excellent — All Systems Performing Well

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

A

Placer County Earns a A

Placer County: 19 communities across 13 water systems. 100.0% have no open violations.

  • Median lead where detected: 1.45 ppb
  • 7 communities with a lead detection, 12 reporting none detected
  • 0 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 100.0% of communities have no open violations
1.45 ppb
Median Lead Level
County-wide, 90th percentile
13
Water Systems
Active CWS & NTNCWS
100%
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
  • Roseville
    Not detected
    No federal limits exceeded on record
    A
  • Rocklin
    Not detected
    No federal limits exceeded on record
    A
  • Lincoln
    Not detected
    No federal limits exceeded on record
    A
  • Granite Bay
    Not detected
    No federal limits exceeded on record
    A
  • Auburn
    Not detected
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Kings Beach
    1.45 ppb
    Copper above the 1,300 ppb action level
    A
  • Tahoe Vista
    1.45 ppb
    Copper above the 1,300 ppb action level
    A
  • Dollar Point
    7.86 ppb
    Lead at 7.86 ppb, above a third of the action level
    B
  • Roseville
    Not detected
    No federal limits exceeded on record
    A
  • Rocklin
    Not detected
    No federal limits exceeded on record
    A
County Lead Level — Median 1.45 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.45 ppb — 9.7% of the federal action level
Systems by Lead Level
Under 5 ppb
6
5 – 10 ppb
1
No Data
12

All Cities in Placer County

Roseville Not detected A
Rocklin Not detected A
Lincoln Not detected A
Granite Bay Not detected A
Auburn Not detected A
North Auburn Not detected A
Loomis Not detected A
Kings Beach 1.45 ppb A
Meadow Vista 0.65 ppb B
Colfax Not detected B
Foresthill Not detected A
Tahoe Vista 1.45 ppb A
Sunnyside-Tahoe City 4.40 ppb A
Penryn Not detected A
Newcastle Not detected A
Sheridan Not detected B
Cedar Flat 1.18 ppb B
Dollar Point 7.86 ppb B
Carnelian Bay 1.18 ppb B
Showing 19 cities
No active violations Active violations

About Placer County Drinking Water

Placer County is served by 13 water systems covering 19 communities. No community here has an open violation on record.

Of the communities reporting lead results, 7 recorded a detection, with a median of 1.45 ppb — 10% of the federal action level. 12 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 no significant deficiencies.

Frequently Asked Questions

Is Placer County tap water safe to drink?▼
No community in Placer County has an open violation on record. No community has PFAS above the federal limit on record.
What is the lead level in Placer County?▼
Among communities with a detection the median is 1.45 ppb, 10% of the 15 ppb action level. 12 reported none detected and 0 reported no result.
How many water systems serve Placer County?▼
13 community water systems serve 19 communities here.
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