Serving roughly 3,642 people in Siskiyou County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for MT. SHASTA, CITY OF
1 water provider directly on file, serving roughly 3,642 people in Siskiyou County, California.
Quick answer: MT. SHASTA, CITY OF currently has an open health-based violation on file: Lead And Copper Rule Revisions, a compliance issue since 10/17/2024. This is active, not historical — see the violation detail below for what EPA's enforcement record shows.
Lead Summary
Copper Summary
Sodium
Calcium
Alkalinity, Total
Alkalinity, Bicarbonate
Hardness, Total (ASCACO3)
TDS
Sulfate
pH
Barium
Conductivity (at 25°C)
Nitrate
Utility MT. SHASTA, CITY OFPopulation served 3,642Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.00136 mg/L (ppm)
12/31/2024
Copper Summary
Detected: 1.51 mg/L (ppm)
12/31/2015
Barium
Detected: 0.9 UG/L (ppb)
5/27/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 0.53 MG/L (ppm)
5/27/2025
Nitrate
Detected: 0.15 MG/L (ppm)
6/30/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Minerals
Everyday minerals that mainly affect taste and water hardness
Sodium
Detected: 3.1 MG/L (ppm)
5/27/2025
Calcium
Detected: 5.7 MG/L (ppm)
5/27/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 17 MG/L (ppm)
5/27/2025
pH
Detected: 6.63 PH
5/27/2025
A measure of how acidic or basic the water is (7 is neutral). Affects taste and plumbing, not a direct health measure.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 27 MG/L (ppm)
5/27/2025
Other
Additional substances tested that don't fit neatly into the categories above
Alkalinity, Total
Detected: 27 MG/L (ppm)
5/27/2025
TDS
Detected: 60 MG/L (ppm)
5/27/2025
Conductivity (at 25°C)
Detected: 54 UMHO/CM
5/27/2025
Filtration considerations: See the table below for how whole-house carbon, under-sink reverse osmosis, and under-sink carbon systems compare against what's actually on file here. These are general system types, not a specific product recommendation.