Serving roughly 8,036 people in San Luis Obispo County, California.
Data current as of July 2026
🔍Straight from EPA
🧪Real Lab Results
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Results for PISMO BEACH WATER DEPARTMENT
1 water provider directly on file, serving roughly 8,036 people in San Luis Obispo County, California.
Quick answer: PISMO BEACH WATER DEPARTMENT has no violations on file. One reading is worth knowing about: Dichloroaceticacid was measured at 30UG/L, among the highest of the 252 providers on file in this area. It's the most notable figure in this system's record among its 252 local peers.
Lead Summary
Lithium
Totalhaloaceticacids (HAA5)
TTHM
Chloroform
Bromodichloromethane
Dibromochloromethane
Bromoform
Dichloroaceticacid
Trichloroaceticacid
Dibromoaceticacid
Monochloroaceticacid
Copper, Free
Utility PISMO BEACH WATER DEPARTMENTPopulation served 8,036Owner Local government
No violations on file
Contaminants found
Metals
Naturally occurring or corrosion-related elements, e.g. lead, arsenic, copper
Lead Summary
Detected: 0 mg/L (ppm)
12/31/2026
Copper, Free
Detected: 300 UG/L (ppb)
9/18/2025
Disinfection Byproducts
Formed when chlorine used to disinfect water reacts with organic matter
Totalhaloaceticacids (HAA5)
Detected: 49 UG/L (ppb)
8/5/2025
TTHM
Detected: 42 UG/L (ppb)
8/5/2025
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: 29 UG/L (ppb)
8/5/2025
One of the individual trihalomethane disinfection byproducts, formed when chlorine reacts with organic matter.
Bromodichloromethane
Detected: 10 UG/L (ppb)
8/5/2025
Dibromochloromethane
Detected: 3 UG/L (ppb)
8/5/2025
Bromoform
Detected: 3 UG/L (ppb)
5/6/2025
PFAS & Emerging Contaminants
Human-made "forever chemicals" and other substances not yet fully regulated
Lithium
Detected: 10.8 µg/L (ppb)
8/11/2025
Occurs naturally in some groundwater. Not currently federally regulated in drinking water.
Other
Additional substances tested that don't fit neatly into the categories above
Dichloroaceticacid
Detected: 30 UG/L (ppb)
8/5/2025
Trichloroaceticacid
Detected: 13 UG/L (ppb)
8/5/2025
Dibromoaceticacid
Detected: 2 UG/L (ppb)
8/5/2025
Monochloroaceticacid
Detected: 4 UG/L (ppb)
8/5/2025
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.