Is Lake Arrowhead Ca 92352, CA Tap Water Safe to Drink?
Graded A, with 1 unresolved violation on record. See what was cited — and what it means for your tap. What to do next ↓
90.8/100
waterverge.com Lake Arrowhead Ca 92352, CA — Water Quality Report
Lake Arrowhead Ca 92352's drinking water received a grade of A (90.8 out of 100), indicating excellent water quality. The city's 1 water system serves approximately 845 residents using purchased surface water.
Lead levels were measured at 0.0 ppb (90th percentile), well within EPA limits. This system has not yet been tested for PFAS under the EPA UCMR 5 program.
The system has 4 violations on record, including 0 health-based violations. 1 remains unresolved.
What to know about Lake Arrowhead Ca 92352's water
Lake Arrowhead Ca 92352 ranks #120 out of 694 cities in California for water quality, placing it above average in the state.
The city draws from surface water sources, which are more susceptible to seasonal runoff and agricultural contamination, requiring extensive multi-barrier treatment including coagulation, filtration, and disinfection.
As a small community water system, Lake Arrowhead Ca 92352 may have fewer resources for advanced treatment technologies and infrastructure upgrades compared to larger utilities.
Water quality score
See methodology →Is Lake Arrowhead Ca 92352, CA water safe to drink?
Lake Arrowhead Ca 92352's tap water meets most EPA standards but has areas that warrant attention. With a grade of A (90.8/100), some contaminant levels or compliance issues suggest that residents may benefit from additional filtration. The city's 1 water system serves approximately 845 residents using surface water (rivers, lakes, or reservoirs).
Recent water quality updates for Lake Arrowhead Ca 92352
A timeline of significant water quality events, violations, and data updates.
Latest EPA compliance and testing data incorporated into Lake Arrowhead Ca 92352's water quality assessment. Grade: A (90.8/100).
Contaminants: Lead and Copper Rule.
Contaminants: Gross Alpha, Excl. Radon and U.
Contaminants: Gross Alpha, Excl. Radon and U.
Key contaminant findings
Based on the most recent EPA sampling data for Lake Arrowhead Ca 92352's water supply.
Well within EPA limits.
Violation history
Lake Arrowhead Ca 92352's water system has 4 total violations on record, including 0 health-based violations. 1 remain unresolved.
Where does Lake Arrowhead Ca 92352's water come from?
Lake Arrowhead Ca 92352's drinking water comes from surface water (rivers, lakes, or reservoirs), supplied by 1 water system serving approximately 845 people. Surface water sources are more susceptible to contamination from runoff, industrial discharge, and algal blooms, requiring extensive treatment.
What Lake Arrowhead Ca 92352 residents can do
Your water utility is required to publish an annual Consumer Confidence Report (CCR) with detailed testing results. Ask for the latest copy or check your utility's website.
Data: EPA SDWIS, UCMR 5 (PFAS), FEMA, NOAA. Last updated May 2026.
Top contaminants to know
View all ↓Violation summary
Violations & advisories
Drought conditions
D1 — moderate droughtSan Bernardino County is currently in D1 (moderate drought) per the U.S. Drought Monitor (week of May 5, 2026). Drought can elevate disinfection-byproduct (TTHM/HAA5) levels and taste/odor issues as utilities draw from lower reservoirs.
Source: U.S. Drought Monitor, updated weekly by NDMC, USDA, and NOAA.
Full contaminants report
| Contaminant | Detected Level | EPA Limit | Unit | Category | Status |
|---|---|---|---|---|---|
| Lead (90th percentile) LeadHeavy Metal A toxic heavy metal that can leach into drinking water from older pipes, solder, and fixtures. No amount of lead in water is considered safe. Health EffectsBrain and nervous system damage in children, kidney damage, high blood pressure, and reproductive problems in adults. EPA Limit15 ppb action level Common SourcesCorrosion of lead pipes, lead solder, brass faucets, and household plumbing. | 0.0 | 15 | ppb | Inorganic | Safe |
Lead level trend (90th percentile)
See how Lake Arrowhead Ca 92352 compares by contaminant
Explore where Lake Arrowhead Ca 92352 ranks among all California cities for specific contaminants.
Water source & infrastructure
Where Lake Arrowhead Ca 92352's water comes from
Lake Arrowhead Ca 92352's drinking water comes primarily from surface water sources such as rivers, lakes, or reservoirs.
Surface water systems require multi-stage treatment including coagulation, sedimentation, filtration, and disinfection to meet EPA Safe Drinking Water Act standards.
These sources can be impacted by seasonal changes, stormwater runoff, upstream agriculture, and industrial discharge.
The system is operated by private ownership and serves approximately 845 people through 1 water system.
Water systems serving Lake Arrowhead Ca 92352
| System Name | PWSID | Population | Source |
|---|---|---|---|
| DEER LODGE WATER SYSTEM | CA3600087 | 845 | SWP |
How Lake Arrowhead Ca 92352 compares
Full California rankings →Lake Arrowhead Ca 92352's score of 90.8/100 is above the average of 57/100 among major California cities. It outscores 9 of 10 nearby cities.
Nearby cities
View California rankings →About Lake Arrowhead Ca 92352, CA
Wikipedia →Lake Arrowhead is an unincorporated community and a census-designated place (CDP) in the San Bernardino Mountains of San Bernardino County, California, surrounded by the San Bernardino National Forest, and surrounding the eponymous Lake Arrowhead Reservoir. Lake Arrowhead is located 13 miles (21 km) north east of the San Bernardino city limits. The population of the CDP was estimated at 12,401 in the 2020 census. It was called "Little Bear Lake" until around 1920, when a group from Los Angeles, the Arrowhead Lake Company, bought the lake and the land surrounding it, and changed its name to Arrowhead Lake.
Learn more about your water
Guides and resources related to Lake Arrowhead Ca 92352's water quality findings.
Explore water quality across San Bernardino
Frequently asked questions
Is Lake Arrowhead Ca 92352, CA tap water safe to drink?
Lake Arrowhead Ca 92352's water quality earned a grade of A (90.8/100). The water generally meets EPA standards and is considered safe for consumption. The city ranks #120 out of 694 cities tested in California.
What contaminants are in Lake Arrowhead Ca 92352's water?
Lead was measured at 0.0 ppb (90th percentile). 4 violations are on record.
How is Lake Arrowhead Ca 92352's water quality grade calculated?
The grade is based on four factors: violation history (40%), lead and copper levels (25%), PFAS contamination (25%), and regulatory compliance (10%). The score is also adjusted based on how complete the available data is. See our methodology page for full details.
Do I need a water filter in Lake Arrowhead Ca 92352?
Based on current data, basic filtration should suffice for additional peace of mind.
Where does Lake Arrowhead Ca 92352's water come from?
Lake Arrowhead Ca 92352's water is sourced from Purchased surface water. The city has 1 water system serving approximately 845 residents.
How does Lake Arrowhead Ca 92352's water compare to other cities?
Lake Arrowhead Ca 92352 ranks #120 out of 694 cities in California (better than 83% of state cities) and #2053 out of 15744 cities nationally (87th percentile). The grade of A reflects the combined assessment of violation history, lead and copper levels, PFAS contamination, and regulatory compliance.
Does Lake Arrowhead Ca 92352's small water system affect quality?
Lake Arrowhead Ca 92352's system serves approximately 845 residents. Small community water systems (under 3,300 people) may have fewer financial resources for infrastructure upgrades and advanced treatment technologies. However, they are held to the same EPA drinking water standards as larger systems. This system has 4 violations on record.