ZIP Code 95045 Water Quality & Testing Report
San Juan Bautista, CA · San Benito County County · Updated for 2026
Is Tap Water Safe to Drink in ZIP 95045 (San Juan Bautista, CA)?
Caution / Filtration Recommended: Tap water in ZIP code 95045 (San Juan Bautista, CA) has compliance concerns, earning an EPA Safety Grade of C (66/100) due to 3 health violation(s) and 1.3 ppb lead. While treated by City of San Juan Bautista,, residents are advised to use an NSF/ANSI 53 certified water filter for drinking and cooking.
Water Safety Grade
Fair — Some compliance concerns
Health Violations
3
Total Violations
7
Lead Risk
High
Contaminants
1
Active Water Quality Issues Detected
EPA records show 7 unresolved violations. Contact City of San Juan Bautista, for current status.
About Tap Water in ZIP Code 95045
Tap water in ZIP code 95045 (San Juan Bautista, CA) is distributed by City of San Juan Bautista, (EPA ID: CA3510002), serving approximately 2,335 residents. Based on EPA Safe Drinking Water Act compliance records, this system receives a water safety grade of C with a composite quality score of 66/100.
Water System
City of San Juan Bautista,
EPA ID: CA3510002
Water Source
Ground Water
Population Served
2,335 residents
County
San Benito County County, California
Lead Levels in ZIP 95045
EPA action level: 15 ppb | Public health goal: 0 ppb
Lead Level: 1.3 ppb — Very Low
Lead exposure risk in 95045 is rated High. EPA models estimate a 53% exposure probability based on housing and infrastructure age.
EPA model estimate based on housing age and infrastructure
Water Hardness & Mineral Content
Grains per gallon (GPG) & Parts per million (PPM / mg/L)
Water in ZIP 95045 is Hard (163 mg/L / 9.5 GPG). Residents may notice white mineral spots on glassware, reduced soap efficiency, and mineral scale on faucets and showerheads.
Grains per gallon
Parts per million CaCO3
Official EPA SDWIS Database Entry
Utility: City of San Juan Bautista, · PWSID: CA3510002
Violation History
Past 5 years — EPA SDWIS data
City of San Juan Bautista, has recorded 3 health-based violations out of 7 total violations over the past 5 years. 7 violations remain unresolved in EPA tracking records.
Regulatory compliance risk for this utility is rated High based on past reporting and enforcement records.
Contaminants Detected
Contaminants with health-based violations on record
EPA records identify 1 contaminant with health-based violations in the past 5 years: Stage 2 DBP Rule.
⚖ Enforcement Actions
Water Source & Environmental Factors
Ground Water
This system draws water from underground aquifers. Groundwater is naturally filtered through soil and rock, but can still contain naturally occurring minerals like arsenic, radium, or nitrates.
Moderate potential
Estimated annual flood-related costs per property
% of household income spent on energy — indicator of older infrastructure
EPA Radon Zone 2 — moderate radon potential. The EPA recommends testing your home regardless of zone designation.
Water Quality Testing in ZIP 95045
Tap Water & Well Testing Recommendations
Residents in ZIP code 95045 served by City of San Juan Bautista, can test tap water or private well systems to verify water purity. Testing detects hidden contaminants before they impact family health.
Tap Water Testing Steps
- 1.Conduct a certified lead check if your home was constructed before 1986.
- 2.Use certified lab testing kits rather than uncalibrated test strips for regulated compliance.
- 3.Sample water from both your kitchen faucet and water heater to compare line purity.
Private Well Testing Steps
- •Test for Coliform bacteria and Nitrates annually.
- •Test for heavy metals, radon, and PFAS every 3 years.
- •Send samples to a state-certified drinking water laboratory recognized by California State Water Resources Control Board.
🛡 What Should You Do? — ZIP 95045 Recommendations
Some compliance concerns — take precautions
- ⚠ Use a certified NSF/ANSI 53 filter for drinking and cooking water if you have young children
- ⚠ Never give unfiltered tap water to infants in formula — use certified bottled or filtered water
- ⚠ Request a copy of the Consumer Confidence Report to see what was detected and when
- ⚠ Call the EPA Safe Drinking Water Hotline: 1-800-426-4791
Recommended Water Treatment Systems:
NSF 53 Lead Pitcher Filter
Specifically certified to reduce lead and copper at the tap.
NSF 58 Under-Sink RO System
Advanced filtration for PFAS, fluoride, nitrates, and organic chemicals.
Frequently Asked Questions — ZIP 95045 Water Quality
Is tap water safe to drink in ZIP code 95045?+
How do I get my water tested in ZIP 95045 (San Juan Bautista, CA)?+
How hard is the tap water in 95045?+
Should I test private well water in 95045?+
What is the lead level in 95045 tap water?+
Is there an active boil water notice in 95045?+
Who provides tap water to 95045?+
What water filter should I use in 95045?+
Data Sources & Methodology
Water quality data for ZIP code 95045 is compiled from the EPA Safe Drinking Water Information System (SDWIS), EPA ECHO enforcement database, UCMR5 unregulated contaminant monitoring, and Consumer Confidence Reports filed by City of San Juan Bautista,. Safety scores are composite metrics derived from violation history, lead levels, enforcement actions, and infrastructure risk indicators. Data reflects a 5-year monitoring window. Last dataset update: 2024. View EPA source data →