Is Larkspur, CO tap water safe?
The short answer
1 of the 2 utilities serving Larkspur has a result above a legal limit or action level, or a health-based violation since 2016, in EPA’s and Colorado’s records: Town of Larkspur.
Perry Park WSD, which serves the most people here, has 1 result above the limit’s level with no violation recorded, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Arsenic at 12.5 ppb, above the limit’s level, no violation. Health goals are stricter than legal limits and are not enforced.
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 Larkspur’s ZIP codes, from EPA’s estimates.
- Open report
Perry Park WSD
Colorado · serves 3,890 people · under 100 in Larkspur
1 result above the limit’s level with no violation recorded, 2 results above the health goal and 1 result above EPA’s health benchmark. The worst: Arsenic at 12.5 ppb, above the limit’s level, no violation.
No health-based violations since 2016
- Open report
Town of Larkspur
Colorado · serves 275 people · under 100 in Larkspur
2 results above the health goal. The worst: Lead at 0.5 ppb, above the health goal.
8 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 Perry Park WSD’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: 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: 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: Arsenic, Lead
Water testing near Larkspur
The 3 labs Colorado certifies closest to Larkspur, in a straight line. Call first: certification is test by test, and not every lab takes samples from homeowners.
El Paso County Health Department
Colorado Springs, CO · about 22 miles
Certified for bacteria, nitrate, minerals and other inorganics
Colorado Department of Health & Environment
Denver, CO · about 36 miles
Certified for bacteria
SGS North America, Inc. - Denver
Denver, CO · about 41 miles
Certified for nitrate, lead and copper, metals, minerals and other inorganics
ZIP codes in Larkspur
Which ZIP codes are in Larkspur: 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: CDPHE certified drinking water laboratories; distances from the Census 2020 ZIP code tabulation area gazetteer.
Near Larkspur
Other towns in Douglas County with a page of their own.
What to do next
- Read Perry Park WSD’s full reportEvery result with its dates, the violations, and the certification claim that handles each finding.Open the report
- Filters for ArsenicRanked by certification and what they cost over five years.The best reverse osmosis systems, ranked
- On a private well?No utility tests a well. A certified lab test is the first step.How to test well water