Serving roughly 86,435 people in San Bernardino County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
🏠Local Expertise
Results for CHINO, CITY OF
1 water provider directly on file, serving roughly 86,435 people in San Bernardino County, California.
Quick answer: CHINO, CITY OF has no violations on file. One reading is worth knowing about: Bromodichloromethane was measured at 19UG/L, among the highest of the 669 providers on file in this area. It's the most notable figure in this system's record among its 669 local peers.
Lead Summary
TTHM
Totalhaloaceticacids (HAA5)
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Chromium, Hex
Magnesium
Calcium
Hardness, Total (ASCACO3)
Nitrate
Utility CHINO, CITY OFPopulation served 86,435Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0.001 mg/L (ppm)
12/31/2024
Chromium, Hex
Detected: 0.025 UG/L (ppb)
8/19/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
TTHM
Detected: 64 UG/L (ppb)
10/21/2025
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.
Totalhaloaceticacids (HAA5)
Detected: 2.7 UG/L (ppb)
10/21/2025
Chloroform
Detected: 12 UG/L (ppb)
10/21/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 11 UG/L (ppb)
10/21/2025
Bromodichloromethane
Detected: 19 UG/L (ppb)
10/21/2025
Dibromochloromethane
Detected: 22 UG/L (ppb)
10/21/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Nitrate
Detected: 3.6 MG/L (ppm)
9/3/2025
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
Magnesium
Detected: 16 MG/L (ppm)
8/19/2025
Calcium
Detected: 71 MG/L (ppm)
8/19/2025
Properties
General water characteristics like pH, hardness, and cloudiness (turbidity)
Hardness, Total (ASCACO3)
Detected: 240 MG/L (ppm)
8/19/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 1.5 UG/L (ppb)
10/21/2025
Trichloroaceticacid
Detected: 2.7 UG/L (ppb)
10/21/2025
Dibromoaceticacid
Detected: 3.2 UG/L (ppb)
10/21/2025
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.