States › California › Shasta County

Shasta County, CA Water Quality

Water quality data for 20 public water systems serving Shasta County, California — based on EPA SDWIS enforcement records, lead testing results, and health-based violation history.

📅 2026 Report 🔄 Data updated 2026 Q2 📍 20 water systems · 25 cities
✅
Excellent — All Systems Performing Well

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

A

Shasta County Earns a A

Shasta County: 25 communities across 20 water systems. 84.0% have no open violations.

  • Median lead where detected: 1.83 ppb
  • 22 communities with a lead detection, 3 reporting none detected
  • 1 communities with PFAS above the federal limit
  • 0 with significant inspection deficiencies
  • 84.0% of communities have no open violations
1.83 ppb
Median Lead Level
County-wide, 90th percentile
20
Water Systems
Active CWS & NTNCWS
84%
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
  • Shasta Lake
    1.13 ppb
    No federal limits exceeded on record
    A
  • Happy Valley
    3.61 ppb
    No federal limits exceeded on record
    A
  • Bella Vista
    1.83 ppb
    No federal limits exceeded on record
    A
  • Burney
    0.87 ppb
    No federal limits exceeded on record
    B
  • Centerville
    2.09 ppb
    No federal limits exceeded on record
    A
⚠ Needs Attention
  • Round Mountain
    13.10 ppb
    1 violation currently open
    D
  • Anderson
    2.40 ppb
    1 violation currently open
    C
  • Mountain Gate
    2.84 ppb
    1 violation currently open
    C
  • Lakehead
    3.63 ppb
    1 violation currently open
    C
  • Redding
    2.13 ppb
    PFAS above the limit at 1 of 10 sampling points
    C
County Lead Level — Median 1.83 ppb
Based on most recent 90th percentile lead tests across all reporting systems
0 ppb5 ppb10 ppb15 ppb
County median: 1.83 ppb — 12.2% of the federal action level
Systems by Lead Level
Under 5 ppb
21
10 – 15 ppb
1
No Data
3

All Cities in Shasta County

Redding 2.13 ppb C
Anderson 2.40 ppb C
Shasta Lake 1.13 ppb A
Cottonwood 1.07 ppb A
Happy Valley 3.61 ppb A
Bella Vista 1.83 ppb A
Burney 0.87 ppb B
Centerville 2.09 ppb A
Palo Cedro 1.83 ppb A
Shasta 0.97 ppb B
Jones Valley 1.57 ppb B
Mountain Gate 2.84 ppb C
Shingletown Not detected B
Johnson Park 1.71 ppb B
Fall River Mills Not detected B
McArthur Not detected B
French Gulch 0.48 ppb B
Lakehead 3.63 ppb C
Keswick 0.97 ppb B
Cassel 4.50 ppb B
Castella 2.21 ppb B
Old Station 0.58 ppb B
Round Mountain 13.10 ppb D
Millville 1.83 ppb A
Igo 3.61 ppb A
Showing 25 cities
No active violations Active violations

About Shasta County Drinking Water

Shasta County is served by 20 water systems covering 25 communities. 84% have no open violations.

Of the communities reporting lead results, 22 recorded a detection, with a median of 1.83 ppb — 12% of the federal action level. 3 reported none detected, which means below the laboratory limit rather than an absence of lead.

1 of 25 communities have PFAS above the limits EPA set in 2024, measured as a running annual average at each sampling point. State inspectors recorded no significant deficiencies.

Frequently Asked Questions

Is Shasta County tap water safe to drink?▼
84% of communities have no open violation. 1 of 25 have PFAS above the federal limit, which is the main open concern.
What is the lead level in Shasta County?▼
Among communities with a detection the median is 1.83 ppb, 12% of the 15 ppb action level. 3 reported none detected and 0 reported no result.
How many water systems serve Shasta County?▼
20 community water systems serve 25 communities here.
← Back to California water quality overview