Brock, NE: High Radon Risk — 70/100 (2026)
1 ZIP code · 1 water system · Updated 2026-06-03
EPA compliance records for Brock tell a largely clear story: violation rates are low, health-based exceedances are uncommon, and the city's grade puts it well above average within NE.
How Brock Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Brock Residents
- Average lead level: 0.0007 mg/L.
- Homes built before 1986: 80% — older plumbing may contain lead solder.
- Estimated remediation: $3,000 per household.
- CDC health risk index: 13.48 — above typical levels.
Brock's Water Providers
Brock, NE draws its water from one primary utility across 1 tracked system.
Overview
We track water quality and home safety data for 1 ZIP code in Brock, Nebraska, covering 1 community water system serving approximately 340 people.
No EPA violations recorded across any ZIP codes in Brock — an excellent indicator of water quality.
Home Safety Score
Average Home Safety Score for Brock: B (70/100)
The score combines three factors:
| Factor | What It Measures |
|---|---|
| Water Quality | EPA violations and compliance history |
| Lead Levels | 90th percentile lead concentration vs EPA action level |
| Radon Risk | EPA radon zone classification |
Water Sources
Brock water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0007 mg/L (EPA action level: 0.015 mg/L)
- 0 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 1 (High Risk)
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Areas with No Violations
| ZIP Code | Safety Score | System | Population |
|---|---|---|---|
| 68320 | B | Brock, Village of | 137 |
All ZIP Codes in Brock
- 68320 [B]
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
Updated daily.
Brock Community Health Snapshot
Source: CDC PLACES (County-level estimates). Water contamination can correlate with respiratory and chronic health conditions.
Compared to National Average
Vertical line = national average. ■ Above national · ■ Below national
Brock Infrastructure Age
With 80% of homes built before 1986, lead solder in plumbing is a potential concern. The EPA banned lead solder in 1986, but many older homes retain original plumbing.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Brock's housing stock is predominantly older, with a median build year of 1947 that reflects decades of construction before federal plumbing standards were tightened. The 1986 ban on lead solder and the pre-1970 era of lead service lines are both relevant benchmarks here — a significant share of the residential inventory predates one or both of those cutoffs, creating an elevated baseline for plumbing-related lead risk that aggregate water quality data may not fully reflect at the household level.
Over half of homes in Brock 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.
How Remediation Costs Compare in Brock
Property values and remediation costs in Brock combine to produce a high equity share — the financial burden here is significant.
At 3.2% of home value, remediation costs in Brock represent a significant financial burden. For homes valued near the median, fixing water and safety issues could cost $2,000–$4,000. Home values here are 46% below the Nebraska average.
Brock: Lead Risk & Vulnerable Populations
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.
80% of Brock housing dates to the pre-rule era, alongside aggregate readings hovering at the federal action mark — household-level confirmation through a draw-test kit fits the local picture.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Brock: Flood History & Water Damage Risk
Brock's NFIP record shows a low claim total — a pattern that keeps the link between flooding and water quality in the background rather than the foreground. Treatment infrastructure can be overloaded by severe flood events, but that scenario requires event frequency and magnitude that the area's claim history suggests have not materialized here.
Brock has a relatively low flood history with 1 FEMA claims on record. While risk is limited, severe weather events can still impact water infrastructure.
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. Flood damage can add significantly to the estimated <strong>$3,000</strong> remediation cost per household.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
Deep Dive Reports
Detailed analysis for Brock, NE