The C shown for Mountainside, NJ is an average of Home Safety Scores across the city's ZIP codes; that composite blends several data sources, so it can move for reasons unrelated to water, and it is not a measurement of what comes out of any tap in the city.

Data: EPA SDWIS

Overview

We track home safety data for 1 ZIP code in Mountainside, New Jersey (population ~6,967), covering 1 community water system serving approximately 615,430 people region-wide. 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 Mountainside: C (67/100)

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

Mountainside water systems draw from: Surface water.

Lead & Copper

• Average of reported 90th-percentile lead results: 0.0020 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

1 of 1 ZIP records with known zones is in EPA Radon Zone 2.

The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.

Areas with No Violations

All ZIP Codes in Mountainside

• 07092 [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

Ask the water utility whether your address in Mountainside has a lead service line; its inventory can answer what a median build year of 1951 cannot.

1951

Median Year Built

89%

Pre-1986 (lead solder era; lead paint banned 1978)

82%

Pre-1970 (Lead Pipes Risk)

Pre-1970 (82%) 1970–1986 (7%) Post-1986 (11%)

Over half of homes in Mountainside were built before 1986, when federal law began restricting lead solder in drinking-water plumbing. 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 Mountainside Homeowners

Compared with typical property prices, the remediation estimate for Mountainside is small in percentage terms - at or under one percent.

Median Home Value

$755,600

Est. Remediation

$500

Remediation as % of home value 0.1%

Estimated remediation costs in Mountainside can be compared with local home values. The $300–$800 estimated range can be set against the median property value; actual costs vary by home. Home values are 56% above the New Jersey average.

Lead Exposure Risk for Children in Mountainside

89%

Homes Built Before 1986

0.002

mg/L average of reported water-system 90th-percentile lead results (the 0.015 action level applies to each system's result, not to this average)

Why children are most at risk: The CDC states that no safe blood lead level in children has been identified. Children under 6 absorb lead more readily than adults, and even low levels can cause developmental delays, learning difficulties, and behavioral problems.

If you have young children or are pregnant, consider testing your home's water - especially if your home was built before 1986.

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

Historical NFIP Claim Context in Mountainside

28

Total FEMA Flood Claims

$22,876

Avg Reported Sum With Payment Data

0%

A/V Share of Claim-Record ZIPs

Historical NFIP data for Mountainside contains 28 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $22,876. Among ZIP codes with claim records, 0% have an A- or V-family dominant rated zone recorded in those historical claims. This is not a complete current FEMA property-map inventory.

How flooding affects water quality: Flood events can introduce sewage, agricultural runoff, and industrial chemicals into water supplies. Even after floodwaters recede, contamination can persist in wells and aging infrastructure. The $500 remediation estimate shown here excludes flood insurance and is not derived from NFIP claim count.

Claim count does not establish current property risk. Check the exact address in FEMA's current map and obtain a property-specific insurance quote when relevant.

Source: historical FEMA National Flood Insurance Program (NFIP) claim records. No current FEMA property-map designation is asserted.