Demarest, NJ: 1 Health Violation - Home Safety 66/100
1 ZIP code · 1 water system · Updated
ZipCheckup grade for Demarest: C.
A mixed picture - some signals here are worth your attention.
Demarest, NJ: a C, mid-scale.
How Demarest Compares
Data: EPA SDWIS
Key Facts for Demarest Residents
- Water systems mapped to your city have 1 violation on record since 2021.
- Average of reported 90th-percentile lead results: 0.011 mg/L.
- Homes built before 1986: 72% - older plumbing may contain lead solder.
- Estimated remediation: $900 per household.
- Health risk index (ZipCheckup composite of CDC data): 10.21.
Demarest's Water Providers
Because water system records on this page are matched to Demarest, NJ through ZIP codes rather than street addresses, the single system in the list below reflects that matching, while federal data connect 1 to the area overall. Anyone unsure which utility supplies a home can check the water bill or contact the utility directly.
- C
Overview
We track home safety data for 1 ZIP code in Demarest, New Jersey (population ~4,916), covering 1 community water system serving approximately 792,713 people region-wide. The EPA snapshots used for this build directly map water systems to 1 of 1 ZIP codes.
1 of 1 ZIP code with a reported violation count in the available EPA record (100%) have recorded EPA violations. 1 health-based violation appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Demarest: C (66/100)
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
Demarest water systems draw from: Surface water.
Lead & Copper
- Average of reported 90th-percentile lead results: 0.0110 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.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Lead and Copper Rule | Treatment Technique | 2 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 07627 | C | 1 | 1 | Veolia Water New Jersey Hackensack |
All ZIP Codes in Demarest
- 07627 [C] - 1 violation ⚠
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.
Demarest Community Health Snapshot
Source: CDC PLACES (County-level estimates). County health indicators are shown for context only and are not linked to this area's water records.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
What's in Demarest's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Demarest Infrastructure Age
With 72% of homes built before 1986, lead solder in plumbing is a potential concern. Federal law banned lead solder in drinking-water plumbing in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
By Census estimates, roughly half or more of the homes in Demarest were built before 1986; the median build year is 1966.
Over half of homes in Demarest 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.
How Remediation Costs Compare in Demarest
Because the median home value in Demarest is large relative to the estimated cost of remediation, the ratio between them stays at or below 1%; that is a statement about two area-level numbers, not a quote for a particular house or a judgment about what an owner can pay.
Estimated remediation costs in Demarest can be compared with local home values. The $550–$1,400 estimated range can be set against the median property value; actual costs vary by home. Home values are 100% above the New Jersey average.
Demarest: Lead Risk & Vulnerable Populations
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.
What does the lead data say about a home in Demarest? Only part of the story. The average of 90th-percentile lead results across the city's ZIP codes is at least 0.010 mg/L, and roughly 72% of dwellings date from the pre-1986 period. Lead usually enters drinking water from a building's own service line and plumbing, so results at any one faucet can be higher or lower than the area average.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Demarest: NFIP Claim Records and Water-Quality Context
Historical NFIP data for Demarest contains 32 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $12,971. 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 $900 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.
What You Can Do in Demarest
- Test your water at home. City-level data shows averages - your tap may differ. Consider testing your home's tap water for lead, since household plumbing can affect its level.
- Install a certified water filter. For Lead and Copper Rule, listed in the water-quality records for Demarest: if it is a rule or reporting requirement rather than a contaminant, ask your utility what the record involved; for bacteria, follow any boil-water notice from your utility; for a specific chemical contaminant, check whether a filter is certified to reduce it. Not every contaminant has a consumer filter certification.
- Check your home's plumbing. With 72% of homes built before 1986, lead solder is a real possibility.
Deep Dive Reports
Detailed analysis for Demarest, NJ