Nampa, ID: 15 Health Violations - Home Safety 76/100
5 ZIP codes · 12 water systems · Updated
ZipCheckup grade for Nampa: B.
This ZIP looks solid, with a few items worth a quick check.
Your top priority: consider a certified water filter (15 health violations on record). NSF certified filters →
Unlike many cities its size in ID, Nampa keeps health-based violation rates low - systems here score at or above the state average for tap water safety, with no systemic concerns flagged in the current data set.
How Nampa Compares
Data: EPA SDWIS
What You Should Know About Nampa Water
- Your city's water systems recorded 43 violations in the past 5 years.
- Average lead level: 0.0047 mg/L.
- Homes built before 1986: 36% - older plumbing may contain lead solder.
- Estimated remediation: $1,120 per household.
- CDC health risk index: 12.08 - above typical levels.
Who Supplies Your Water in Nampa
3 water utilities share the residential service territory in Nampa, ID - out of 12 total systems in federal records.
- B
- B
- B
Overview
We track home safety data for 5 ZIP codes in Nampa, Idaho (population ~136,828), covering 12 community water systems serving approximately 208,152 people region-wide. The EPA snapshots used for this build directly map water systems to 3 of 5 ZIP codes.
3 of 3 ZIP codes with a reported violation count in the available EPA record (100%) have recorded EPA violations. 15 health-based violations appear in the available health breakdown.
Home Safety Score
Average Home Safety Score for Nampa: B (76/100)
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
Nampa water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0047 mg/L (EPA action level: 0.015 mg/L)
- 0 of 3 ZIP codes with known status exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 5 ZIP codes
- Zone 3 (Low): 0 ZIP codes
The EPA recommends testing homes in Zone 1 and Zone 2 areas for radon.
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Barium | Inorganic | 23 | 2 |
| Lead and Copper Rule | Treatment Technique | 10 | 1 |
| Consumer Confidence Report Rule | Reporting | 8 | 3 |
| Contaminant 0700 | Other | 8 | 1 |
| Stage 2 DBP Rule | Treatment Technique | 6 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 83686 | C | 30 | 14 | City of Nampa |
| 83651 | B | 9 | 1 | City of Nampa |
| 83687 | B | 9 | 0 | City of Nampa |
All ZIP Codes in Nampa
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.
Health Outcomes in Nampa
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
Top Contaminants in Nampa Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Nampa
Housing age data helps assess potential lead pipe and infrastructure risks. Newer housing stock generally means lower plumbing-related contamination risk.
Source: U.S. Census Bureau American Community Survey (ACS).
Housing Age Profile
Development in Nampa unfolded across multiple decades, and the median build year of 1988 reflects a housing inventory where eras of construction are genuinely mixed - including portions that predate the federal prohibition on lead solder in plumbing.
Most homes in Nampa were built after 1986, reducing the risk of lead contamination from plumbing. Older homes should still be tested.
Source: U.S. Census Bureau ACS B25034.
Cost Context: What Remediation Means for Nampa Homeowners
Property equity in Nampa runs well ahead of estimated remediation costs - a cost-to-value ratio that sits in the low tier, meaning documented water and safety issues here are the kind homeowners can plan to address without treating the expense as a significant budget event relative to what their homes are worth.
Remediation costs in Nampa are relatively low compared to home values. The $480–$1,880 estimated range is a small fraction of median property value. Home values are 11% above the Idaho average.
Lead Exposure Risk for Children in Nampa
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.
Locally, 36% of Nampa homes carry interior plumbing from the era when lead solder was still permitted in new builds, and citywide monitoring approaches or crosses the EPA action benchmark. Households can find a draw-test kit and certified filtration through verified retailers.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Historical NFIP Claim Context in Nampa
Historical NFIP data for Nampa contains 9 flood insurance claims. Among claims with payment data, the average reported building, contents, and ICC component sum is $3,014. Among ZIP codes with claim records, 50% 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 <strong>$1,120</strong> 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.
Deep Dive Reports
Detailed analysis for Nampa, ID