Serving roughly 53,355 people in Yolo County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for CITY OF WEST SACRAMENTO
1 water provider directly on file, serving roughly 53,355 people in Yolo County, California.
Quick answer: CITY OF WEST SACRAMENTO 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
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Monochloroaceticacid
Copper, Free
Aggressive Index
Langelier Index (pH(s))
Magnesium
Calcium
Potassium
Sodium
Alkalinity, Total
Alkalinity, Bicarbonate
TDS
Chloride
Sulfate
Fluoride
pH
Odor
Barium
Aluminum
Conductivity (at 25°C)
Iron
Chromium, Hex
Utility CITY OF WEST SACRAMENTOPopulation served 53,355Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2027
Copper, Free
Detected: 60 UG/L (ppb)
9/8/2025
Barium
Detected: 18 UG/L (ppb)
8/6/2025
Aluminum
Detected: 220 UG/L (ppb)
10/1/2025
Iron
Detected: 220 UG/L (ppb)
10/1/2025
Mostly an aesthetic issue (metallic taste, staining) rather than a health concern at typical levels.
Chromium, Hex
Detected: 0.24 UG/L (ppb)
6/11/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 20 UG/L (ppb)
10/1/2025
TTHM
Detected: 46 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.
Chloroform
Detected: 40 UG/L (ppb)
10/1/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 5.6 UG/L (ppb)
10/1/2025
Dibromochloromethane
Detected: 0.65 UG/L (ppb)
10/1/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Chloride
Detected: 6.1 MG/L (ppm)
8/6/2025
Sulfate
Detected: 4.8 MG/L (ppm)
8/6/2025
Fluoride
Detected: 0.7 MG/L (ppm)
8/6/2025
Often added deliberately for dental health; can also occur naturally.
Minerals
Everyday minerals that mainly affect taste and water hardness
Magnesium
Detected: 6 MG/L (ppm)
8/6/2025
Calcium
Detected: 11 MG/L (ppm)
8/6/2025
Potassium
Detected: 1.2 MG/L (ppm)
8/6/2025
Sodium
Detected: 11 MG/L (ppm)
8/6/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Langelier Index (pH(s))
Detected: -0.98 LANG
8/6/2025
pH
Detected: 7.7 PH
8/6/2025
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: 76 MG/L (ppm)
8/6/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 8.4 UG/L (ppb)
10/1/2025
Trichloroaceticacid
Detected: 11 UG/L (ppb)
10/1/2025
Monochloroaceticacid
Detected: 2.1 UG/L (ppb)
1/8/2025
Aggressive Index
Detected: 11 AGGR
8/6/2025
Alkalinity, Total
Detected: 76 MG/L (ppm)
8/6/2025
TDS
Detected: 100 MG/L (ppm)
8/6/2025
Odor
Detected: 5.7 TON
8/6/2025
Conductivity (at 25°C)
Detected: 160 UMHO/CM
8/6/2025
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.