Serving roughly 7,811 people in Lassen County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for CITY OF SUSANVILLE
1 water provider directly on file, serving roughly 7,811 people in Lassen County, California.
Quick answer: CITY OF SUSANVILLE has no violations on file and no single reading stands out against its peers (152 other providers in this area). It serves roughly 7,811 people, and the full breakdown below reflects everything EPA and California have on record for it.
Lead Summary
Lithium
TTHM
Bromoform
Bromodichloromethane
Dibromochloromethane
Copper, Free
Gross Alpha Particle Activity
Nitrate
Utility CITY OF SUSANVILLEPopulation served 7,811Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2025
Copper, Free
Detected: 180 UG/L (ppb)
8/13/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 16 UG/L (ppb)
10/1/2025
A group of disinfection byproducts formed when chlorine reacts with organic matter. Long-term exposure above the legal limit has been linked to increased cancer risk in some studies.
Bromoform
Detected: 10 UG/L (ppb)
10/1/2025
Bromodichloromethane
Detected: 2 UG/L (ppb)
10/1/2025
Dibromochloromethane
Detected: 4 UG/L (ppb)
10/1/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 1.7 MG/L (ppm)
10/8/2025
Commonly from agricultural fertilizer runoff or septic systems. Above the legal limit, it's an immediate concern especially for infants.
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Gross Alpha Particle Activity
Detected: 1.21 PCI/L
10/15/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 23.9 µg/L (ppb)
8/5/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
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.