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WaterSafeCheck

ZIP Code 92311 Water Quality Report

Barstow, CA · San Bernardino County County

Safety Score
D

Water Safety Grade

Poor — Multiple violations recorded

Health Violations

24

Total Violations

31

Lead Risk

High

Contaminants

2

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Active Water Quality Issues Detected

EPA records show 28 unresolved violations. Contact Usmc Nebo (barstow) for current status.

About Tap Water in ZIP Code 92311

Tap water in ZIP code 92311 (Barstow, CA) has received a D grade (score: 45/100) — below average for the nation. Usmc Nebo (barstow) has recorded notable violations with EPA Safe Drinking Water Act regulations. Residents may want to consider additional filtration and review their annual Consumer Confidence Report.

Water System

Usmc Nebo (barstow)

EPA ID: CA3610701

Water Source

Ground Water

Population Served

1,126 residents

County

San Bernardino County County, California

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Lead Levels in ZIP 92311

EPA action level: 15 ppb | Public health goal: 0 ppb

Lead Data Not Available

Lead testing data was not found in EPA records for ZIP code 92311. This may occur with very small systems or systems that report under a parent utility. Contact Usmc Nebo (barstow) directly to request lead testing results or a copy of their Consumer Confidence Report.

Lead exposure risk in 92311 is rated High. EPA models estimate a 57% probability of lead exposure risk in this ZIP code based on housing age, infrastructure age, and water system data. This typically reflects older housing stock built before 1986 (when lead pipes were banned), aging distribution infrastructure, or detected lead levels in water samples. Families should prioritize getting their tap water tested independently and installing a certified lead-reducing filter.

Lead Exposure Risk Rating
High
Lead Exposure Probability

EPA model estimate based on housing age and infrastructure

57%
Note: Lead levels above are the 90th percentile from EPA monitoring — meaning 90% of samples were at or below this level. Even "undetected" tap water lead doesn't account for lead leaching from home plumbing. If your home was built before 1986, individual tap testing is recommended.
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Violation History

Past 5 years — EPA SDWIS data

Usmc Nebo (barstow) has recorded 24 health-based violations in the past 5 years — significantly above the national average. This volume of violations indicates serious and recurring compliance issues. Independent water testing and in-home filtration are strongly recommended. 28 violations are currently unresolved — meaning the issue has not yet been formally corrected in EPA records. This is a serious concern that residents should follow up on with their water utility.

Total Violations (5 yr)
31
Health-Based Violations
24
Unresolved Violations
28
Boil Water Advisories
0
Compliance Risk
Critical

Regulatory compliance risk is rated Critical — the highest risk category. Usmc Nebo (barstow) has an extensive history of unresolved violations and enforcement actions. Independent water testing is highly recommended.

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Contaminants Detected

Contaminants with health-based violations on record

EPA records identify 2 contaminants associated with health-based violations in ZIP code 92311: Barium, Stage 2 DBP Rule. These contaminants exceeded the Maximum Contaminant Levels (MCLs) established by the EPA under the Safe Drinking Water Act at some point in the 5-year monitoring period. The presence of these violations does not necessarily mean water is currently unsafe — water systems are often required to increase monitoring and treatment when violations occur. Review the annual Consumer Confidence Report for the most current status.

BariumStage 2 DBP Rule

⚖ Enforcement Actions

9 enforcement actions have been issued against Usmc Nebo (barstow) — a high number that reflects sustained compliance struggles. Enforcement actions escalate from administrative orders to financial penalties when utilities repeatedly fail to meet safe drinking water standards.
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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.

Water Source Type
Ground Water
EPA Radon Zone

Moderate potential

Zone 2
Annual Flood Risk Cost

Estimated annual flood-related costs per property

$0
Energy Burden

% of household income spent on energy — indicator of older infrastructure

6.14%

EPA Radon Zone 2 — moderate radon potential. The EPA recommends testing your home regardless of zone designation.

🛡 What Should You Do? — ZIP 92311 Recommendations

  • 🚨 Install a certified NSF/ANSI 53 or 58 (reverse osmosis) filter immediately for drinking and cooking
  • 🚨 Do not give unfiltered water to children, pregnant women, or immunocompromised individuals
  • 🚨 Contact Usmc Nebo (barstow) to request the current violation status and corrective action plan
  • 🚨 Report concerns to your state environmental agency or call the EPA hotline: 1-800-426-4791
  • 🚨 Consider having your home's tap water independently tested by a certified lab

Frequently Asked Questions — ZIP 92311 Water Quality

Is tap water safe to drink in ZIP code 92311?+
Tap water in 92311 has a below-average water quality grade of D. While it is treated, there have been notable compliance issues. We strongly recommend using a certified NSF/ANSI 53 water filter for drinking and cooking, especially for vulnerable populations.
What is the lead level in 92311 tap water?+
Lead level data from EPA monitoring is not available for 92311. Contact Usmc Nebo (barstow) directly for the most recent lead testing results.
Who provides tap water to 92311?+
Tap water in ZIP code 92311 is provided by Usmc Nebo (barstow) (EPA ID: CA3610701). This system serves approximately 1,126 residents. You can contact them directly for Consumer Confidence Reports, current advisories, and billing information.
What is the water source for 92311?+
ZIP code 92311 is served by ground water. Groundwater systems draw from underground aquifers. While naturally filtered, groundwater can still contain naturally occurring contaminants such as arsenic, radium, or nitrates at elevated levels in some regions.
Does 92311 have any active water quality violations?+
Yes — there are currently 28 unresolved violations on record for this water system. Unresolved violations indicate issues that have not yet been formally corrected in EPA tracking systems. Contact Usmc Nebo (barstow) for the latest update.
How do I get a copy of my water quality report for 92311?+
Your water utility — Usmc Nebo (barstow) — is required by law to send you an annual Consumer Confidence Report (CCR) by July 1 each year. You can also request it directly from the utility or find it online by searching "Usmc Nebo (barstow) Consumer Confidence Report." The EPA's ECHO database also has historical compliance data.
What water filter should I use in 92311?+
The right filter depends on what contaminants are present. For lead, look for a filter certified to NSF/ANSI Standard 53. For chlorine byproducts (like THMs), NSF/ANSI 42 filters work well. For a broad range of contaminants including PFAS, look for NSF/ANSI 58 (reverse osmosis) systems. For ZIP code 92311, with detected contaminants including Barium and Stage 2 DBP Rule, a multi-stage filter or reverse osmosis system is recommended.
Is 92311 tap water safe for babies and infants?+
Infants are especially vulnerable to lead, nitrates, and microbial contaminants in drinking water. Current EPA data for 92311 shows no available lead data — we recommend using a certified NSF/ANSI 53 lead filter as a precaution for infant formula. Always consult your pediatrician for guidance specific to your child's health.

Data Sources & Methodology

Water quality data for ZIP code 92311 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 Usmc Nebo (barstow). 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 →