Is Lompoc, 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 Lompoc-City Water Utility Division.
2 public water systems serve parts of Lompoc. The largest, Lompoc-City Water Utility Division, serves 40,538 people. Your water bill names your system.
Largest system
Lompoc-City Water Utility Division
40,538 people · Surface water · EPA ID CA4210006
Buys treated water from Mission Hills Community Services 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 2025, 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.
Lompoc homes and lead pipes
Lead service lines and lead solder were allowed until 1986, so homes from before then are the ones to check. Renting? Ask your landlord what the service line is made of, because it's their pipe to replace. How to check your own line.
Housing: Census American Community Survey 2020–2024 5-year estimates for Lompoc city (tables B25034, B25003). Estimates for small places have a margin of error.
Other water systems serving Lompoc
- Chalk Hill Estates HOA38 people · Groundwater · California · lists this cityNot in EPA's PFAS sample
How nearby cities compare
| City | PFAS | Lead (90th pct.) |
|---|---|---|
| Santa Maria 19 mi City of Santa Maria Utilities Department | None above limits | 0 ppb |
| Goleta 38 mi Goleta Water District | None above limits | 0 ppb |
| San Luis Obispo 43 mi San Luis Obispo Water Department | None above limits | 0 ppb |
| Santa Barbara 47 mi City of Santa Barbara Water Department | None above limits | 2.5 ppb |
| Atascadero 58 mi Atascadero Mutual Water Company | Above limit | 0 ppb |
| Ventura 74 mi Ventura Water Department | None above limits | 0 ppb |
Lompoc ZIP codes (1)
- 93436
Questions
Is Lompoc tap water safe to drink?
Lompoc-City Water Utility Division 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 Lompoc, CA?
2 public water systems serve parts of Lompoc. The largest is Lompoc-City Water Utility Division (40,538 people). Your water bill names your system. The EPA ID is also on your utility's Consumer Confidence Report.
Does Lompoc tap water have PFAS?
None detected above EPA's reporting limits. Lompoc-City Water Utility Division 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 Lompoc homes have lead pipes?
Census estimates put 58% of Lompoc 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. Lompoc-City Water Utility Division'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.