Serving roughly 62,500 people in Contra Costa County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
📅Updated Quarterly
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Results for CITY OF PITTSBURG
1 water provider directly on file, serving roughly 62,500 people in Contra Costa County, California.
Quick answer: CITY OF PITTSBURG has no violations on file. One reading is worth knowing about: Dichloroaceticacid was measured at 6.3UG/L, among the highest of the 179 providers on file in this area. It's the most notable figure in this system's record among its 179 local peers.
Lead Summary
Lithium
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromoform
Bromodichloromethane
Dibromochloromethane
Dichloroaceticacid
Trichloroaceticacid
Monobromoaceticacid
Dibromoaceticacid
TDS
Sulfate
Manganese
Aluminum
Alkalinity, Total
Alkalinity, Bicarbonate
Utility CITY OF PITTSBURGPopulation served 62,500Owner Local government
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2024
Manganese
Detected: 5.4 UG/L (ppb)
4/8/2025
Mainly a taste/staining concern at typical levels; long-term neurological research at high chronic exposure is ongoing.
Aluminum
Detected: 47 UG/L (ppb)
7/8/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 11 UG/L (ppb)
7/7/2025
TTHM
Detected: 41 UG/L (ppb)
7/7/2025
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: 9 UG/L (ppb)
7/7/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromoform
Detected: 3.5 UG/L (ppb)
7/7/2025
Bromodichloromethane
Detected: 14 UG/L (ppb)
7/7/2025
Dibromochloromethane
Detected: 14 UG/L (ppb)
7/7/2025
Inorganics
Common dissolved minerals and salts, e.g. nitrate, fluoride, chloride
Sulfate
Detected: 48 MG/L (ppm)
7/8/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 22.6 µg/L (ppb)
4/3/2024
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Calculated Parameters
Values worked out mathematically from other test results, not measured directly
Alkalinity, Bicarbonate
Detected: 76.1 MG/L (ppm)
9/16/2025
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 6.3 UG/L (ppb)
7/7/2025
Trichloroaceticacid
Detected: 3.6 UG/L (ppb)
7/7/2025
Monobromoaceticacid
Detected: 1.2 UG/L (ppb)
1/6/2025
Dibromoaceticacid
Detected: 1.5 UG/L (ppb)
7/7/2025
TDS
Detected: 250 MG/L (ppm)
7/8/2025
Alkalinity, Total
Detected: 76.1 MG/L (ppm)
9/16/2025
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.