Is Moorpark, CA tap water safe?
Data: U.S. EPA · How we read the data · How we check it
Summary
No federal limits exceeded in EPA data for Ventura Cwwd No. 1 – Moorpark Water System.
3 public water systems serve parts of Moorpark. The largest, Ventura Cwwd No. 1 – Moorpark Water System, serves 35,514 people. Your water bill names your system.
Largest system
Ventura Cwwd No. 1 – Moorpark Water System
35,514 people · Purchased surface water · EPA ID CA5610018
Buys treated water from Calleguas Municipal Water District.
| PFAS | Highest average | Limit |
|---|---|---|
| PFOA Not detected | – | 4 ppt |
| PFOS Not detected | – | 4 ppt |
| PFHxS Not detected | – | 10 ppt |
| PFNA Not detected | – | 10 ppt |
| HFPO-DA (GenX) Not detected | – | 10 ppt |
ppt = parts per trillion. "Highest average" is the highest average at any of the system's entry points, the way EPA compares results with the limits.
Lead: 0 ppb at the 90th percentile (Dec 2024, and 9 in 10 homes sampled were at or below it) Below action level
Health-based violations since 2016: 0
Across California, 129 of 691 water systems EPA tested had PFAS above a 2024 federal limit, and 26 systems were above the lead action level in results from the last five years. California results.
Moorpark homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Moorpark city (tables B25034, B25003). Estimates for small places have a margin of error.
Other water systems serving Moorpark
- Ventura Cwwd No. 38 – Lake Sherwood Water System1,759 people · Purchased surface water · California · reported ZIPs hereNot in EPA's PFAS sample
- Ventura Cwwd No. 19 – Somis Water System1,429 people · Purchased surface water · California · reported ZIPs hereNot in EPA's PFAS sample
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Thousand Oaks 6 mi Las Virgenes Municipal Water District | None above limits | 0 ppb |
| Simi Valley 7 mi Ventura County Waterworks District No. 8 – Simi Valley | None above limits | 0 ppb |
| Camarillo 10 mi Camarillo Water Dept | None above limits | 0 ppb |
| Santa Paula 12 mi City of Santa Paula | None above limits | 0 ppb |
| Oxnard 20 mi Oxnard Water Dept | None above limits | 0 ppb |
| Ventura 22 mi Ventura Water Department | None above limits | 0 ppb |
Moorpark ZIP codes (1)
- 93021
Questions
Is Moorpark tap water safe to drink?
Ventura Cwwd No. 1 – Moorpark Water System has had no health-based violations since 2016. Utility data can't show lead from your own pipes: if your home was built before 1986, test your tap. Your utility's annual Consumer Confidence Report is the official summary.
Who supplies water in Moorpark, CA?
3 public water systems serve parts of Moorpark. The largest is Ventura Cwwd No. 1 – Moorpark Water System (35,514 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.
Does Moorpark tap water have PFAS?
None detected above EPA's reporting limits. Ventura Cwwd No. 1 – Moorpark Water System had no PFAS detected in EPA's 2023–2025 testing. "Not detected" means below the reporting limit (about 2 to 20 ppt), not proven zero.
Do Moorpark homes have lead pipes?
Census estimates put 20% of Moorpark homes as built before 1980 (California: 56%). Lead service lines and lead solder were allowed until 1986, so older homes are more likely to have them. Ventura Cwwd No. 1 – Moorpark Water System's service line inventory says what your line is made of. The only way to know for your home is to check the line where it enters the house and test your tap.
Source: U.S. EPA drinking water records and PFAS testing (UCMR 5). How we read the data.