Water systems across Maywood produce average compliance results for CA overall - pockets with documented violations exist, and the variation between areas makes checking the specific system serving a given address the most useful step for residents here.

Data: EPA SDWIS

Overview

We track home safety data for 1 ZIP code in Maywood, California, covering 3 community water systems serving approximately 24,522 people. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.

The available EPA record reports 0 violations for 1 ZIP code with a reported violation count.

Home Safety Score

Average Home Safety Score for Maywood: C (58/100)

Model 4.0.0 uses four measured components across three equally weighted domains. If a required domain is unavailable, no score is published:

Factor	What It Measures
Water Quality	EPA violations and compliance history
PFAS MCL Screen	UCMR 5 testing against the covered federal MCLs
Radon Risk	EPA radon zone classification
Annual AQI	EPA AirData county-year median with at least 90 observed days

Water Sources

Maywood water systems draw from: Surface water.

Lead & Copper

• Average lead level (90th percentile): 0.0000 mg/L (EPA action level: 0.015 mg/L)
• 0 of 1 ZIP code with known status exceed the EPA lead action level

Radon Risk

Dominant radon zone: Zone 2 (Moderate Risk)

The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.

Areas with No Violations

All ZIP Codes in Maywood

• 90270 [C]

Data Sources

• Water quality: EPA Safe Drinking Water Information System (SDWIS)
• Lead/copper: EPA Lead and Copper Rule sampling data
• Radon: EPA Map of Radon Zones

Reporting periods vary by source. Missing data is shown as unavailable, not as zero.

Housing Age Profile

Reading the housing age data for Maywood - median build year 1957 - the overriding implication is that the plumbing materials inside a typical home here reflect pre-1986 construction standards. In practical terms, that means lead-soldered copper joints are common across much of the housing stock. Where those materials are present, water can leach lead as it moves through joints - a pathway that corrosion control treatment under federal rules is designed to reduce, though it cannot eliminate lead risk where the plumbing materials themselves contain lead.

1957

Median Year Built

90%

Pre-1986 (Lead Paint Risk)

68%

Pre-1970 (Lead Pipes Risk)

Pre-1970 (68%) 1970–1986 (22%) Post-1986 (10%)

Over half of homes in Maywood were built before 1986, when lead solder was banned. Older plumbing may leach lead into drinking water, especially with corrosive water chemistry.

Source: U.S. Census Bureau ACS B25034.

Cost Context: What Remediation Means for Maywood Homeowners

In Maywood, property values comfortably outpace what documented remediation typically costs - the equity share is proportionally low.

Median Home Value

$595,000

Est. Remediation

$1,000

Remediation as % of home value 0.2%

Remediation costs in Maywood are relatively low compared to home values. The $400–$1,600 estimated range is a small fraction of median property value. Home values are 19% below the California average.

Lead Exposure Risk for Children in Maywood

90%

Homes Built Before 1986

Why children are most at risk: The CDC states there is no safe level of lead exposure for children. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

Pulling a tap sample fills the gap that utility data cannot close, particularly here where 90% of housing dates from the pre-rule era and citywide monitoring sits at or above the regulatory mark in Maywood.

Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.