Is Pismo Beach, CA tap water safe?
The short answer
Pismo Beach Water Department serves Pismo Beach. In EPA’s and California’s records it has 1 result above the legal limit and 2 results above the health goal, and 3 health-based violations since 2016.
The worst: Haloacetic acids (HAA5) at 58.7 ppb, above the legal limit.
The water from Pismo Beach Water Department is very hard, typically 490 mg/L (28.6 grains per gallon). How California’s water compares.
Some homes in a town are on private wells or a small system of their own. The name on your water bill tells you which is yours.
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Pismo Beach Water Department’s water.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: Arsenic
Aquasana SmartFlow Reverse Osmosis (AQ-SFRO2)
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Brondell Capella RC250 Reverse Osmosis System
Under-sink reverse osmosis
- WQA listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 9, 2026
Certified for: Arsenic
Water testing near Pismo Beach
The 3 labs California certifies closest to Pismo Beach, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Abalone Coast Analytical, Inc.
San Luis Obispo, CA · about 6 miles
Certified for bacteria
Fruit Growers Laboratory, Inc.
San Luis Obispo, CA · about 6 miles
Certified for bacteria
County of San Luis Obispo Public Health Laboratory
San Luis Obispo, CA · about 8 miles
Certified for bacteria
ZIP codes in Pismo Beach
Which ZIP codes are in Pismo Beach: Census 2020 relationship files. Which utilities serve them, and how many people: EPA SDWIS and EPA’s service area map. Each utility’s results: EPA UCMR 5, EPA SDWIS, and EPA’s and the state’s compliance monitoring, as its report lists them. How they are measured: methodology. Certified labs: California State Water Resources Control Board, ELAP accredited laboratories and their fields of accreditation; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Pismo Beach
Other towns in San Luis Obispo County with a page of their own.
What to do next
- Read Pismo Beach Water Department’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- About Haloacetic acids (HAA5)What it does to health, where it comes from, and the certification claim that addresses it.About Haloacetic acids (HAA5)
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water