Is Del Rey Oaks, CA tap water safe?
The short answer
None of the 3 utilities serving Del Rey Oaks has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and California’s records.
Cal Am Water Company - Monterey, which serves the most people here, has 2 results above EPA’s new limit, which takes effect in 2029, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 8.1 ppt, above EPA’s new limit, which takes effect in 2029.
A town can be served by more than one utility, and some homes are on private wells. The name on your water bill tells you which is yours, and your ZIP code narrows it down. They are listed by how many people each serves in Del Rey Oaks’s ZIP codes, from EPA’s estimates.
- Open report
Cal Am Water Company - Monterey
California · serves 128,928 people · about 900 in Del Rey Oaks
2 results above EPA’s new limit, which takes effect in 2029, 3 results above the health goal and 1 result above EPA’s health benchmark. The worst: PFOA at 8.1 ppt, above EPA’s new limit, which takes effect in 2029.
No health-based violations since 2016
- Open report
Marina Coast Water District
California · serves 38,918 people · about 160 in Del Rey Oaks
2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Lithium at 40.9 ppb, above EPA’s health benchmark. Hardness: moderately hard to very hard depending on the source, 82 to 242 mg/L (4.8 to 14.2 grains per gallon).
No health-based violations since 2016
- Open report
Seaside Municipal Water System
California · serves 2,800 people · under 100 in Del Rey Oaks
2 results above the health goal. The worst: Arsenic at 1.3 ppb, above the health goal. Hardness: moderately hard, 75 mg/L (4.4 grains per gallon).
No health-based violations since 2016
What handles it
Each of these is certified, on a certifier’s listing, for a result above a line in Cal Am Water Company - Monterey’s water, which serves the most people here. Another utility’s report names what handles its own results.
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Countertop reverse osmosis
- IAPMO listing:NSF/ANSI 42NSF/ANSI 53NSF/ANSI 58NSF/ANSI 401checked Oct. 4, 2026
Certified for: PFOA, PFOS, Arsenic, Lead
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: PFOA, PFOS, Arsenic, Lead
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: PFOA, PFOS, Arsenic, Lead
Water testing near Del Rey Oaks
The 3 labs California certifies closest to Del Rey Oaks, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
Monterey Bay Analytical Services, Inc.
Monterey, CA · about 1 mile
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics, radioactivity
Monterey County Consolidated Environmental Laboratory
Salinas, CA · about 12 miles
Certified for bacteria, nitrate, lead and copper, metals, minerals and other inorganics
Santa Cruz County - Health Services Agency - Environmental Health
Santa Cruz, CA · about 30 miles
Certified for bacteria
Which ZIP codes are in Del Rey Oaks: 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 Del Rey Oaks
Other towns in Monterey County with a page of their own.
What to do next
- Read Cal Am Water Company - Monterey’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for PFOARanked by certification and what they cost over five years.The best water filters for PFAS, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water