Rocklin, CA: Lead Above EPA Limits — 47/100 (2026)
2 ZIP codes · 4 water systems · Updated 2026-06-03
If you're researching Rocklin, CA tap water quality, the baseline finding is below average — health-based violations are documented in several service areas, and verifying the specific system at your address is the right next step.
How Rocklin Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Rocklin Residents
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.016 mg/L — exceeds the EPA action level of 0.015 mg/L.
- Homes built before 1986: 28% — older plumbing may contain lead solder.
- Estimated remediation: $2,310 per household.
- CDC health risk index: 11.13.
Rocklin's Water Providers
3 water utilities share the residential service territory in Rocklin, CA — out of 4 total systems in federal records.
Overview
We track water quality and home safety data for 2 ZIP codes in Rocklin, California (population ~72,098), covering 4 community water systems serving approximately 299,744 people region-wide.
2 of 2 ZIP codes (100%) have recorded EPA violations. 2 health-based violations documented.
Home Safety Score
Average Home Safety Score for Rocklin: D (47/100)
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
Rocklin water systems draw from: Groundwater.
Lead & Copper
- Average lead level (90th percentile): 0.0160 mg/L (exceeds EPA action level) (EPA action level: 0.015 mg/L)
- 2 ZIP codes exceed the EPA lead action level
Radon Risk
Dominant radon zone: Zone 2 (Moderate Risk)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 2 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 |
|---|---|---|---|
| Stage 2 DBP Rule | Treatment Technique | 6 | 2 |
| Contaminant 1032 | Other | 3 | 2 |
| Haloacetic Acids (HAA5) | Disinfection Byproducts | 3 | 2 |
| Stage 1 DBP Rule | Treatment Technique | 3 | 2 |
| Surface Water Treatment Rule | Treatment Technique | 3 | 2 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 95677 | D | 6 | 1 | City of Roseville |
| 95765 | D | 6 | 1 | Placer Cwa - Foothill |
All ZIP Codes in Rocklin
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.
Rocklin 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
What's in Rocklin's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Rocklin Infrastructure Age
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
Since 1986, federal law has prohibited lead solder in new residential plumbing. With a median build year of 1996, much of Rocklin's housing falls on the safer side of that line — though homes built before 1986 still warrant testing regardless of the city-wide profile.
Most homes in Rocklin 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.
How Remediation Costs Compare in Rocklin
Remediation costs in Rocklin are small relative to typical property values — the cost-to-value ratio here is favorable.
Remediation costs in Rocklin are relatively low compared to home values. The $1,490–$3,380 estimated range is a small fraction of median property value. Home values are 5% below the California average.
Rocklin: 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.
Reading the local data together points toward a structural gap that matters more here than in low-exposure communities. 28% of Rocklin stock comes from the pre-rule era, and citywide monitoring either approaches or sits beyond the federal benchmark under Lead and Copper Rule sampling. A baseline kit fits the routine-diligence category, with certified filtration available via retailer networks where confirmed faucet results warrant additional measures.
<strong>2 ZIP codes</strong> (100% of the city) exceed the EPA lead action level of 0.015 mg/L.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Rocklin: Flood History & Water Damage Risk
Taken together, Rocklin's 25 NFIP flood insurance claims and 50% FEMA flood zone coverage place it in the moderate range of exposure. That middle position has specific implications for water quality. The contamination pathways that flooding can open — surface water overwhelming treatment facility intake, floodwaters infiltrating private wells, distribution pressure changes creating backflow — are not constant risks in a moderate-exposure community. But they do become active during significant flood events, and the claim record here indicates enough of those events to make flood timing an occasional factor in local water quality conversations.
Rocklin has a moderate flood history with 25 FEMA claims averaging $8,386 per payout. 50% of ZIP codes fall within FEMA flood zones. Flood events can contaminate drinking water and overwhelm treatment systems.
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>$2,310</strong> remediation cost per household.
Residents in flood-prone areas should consider flood insurance even outside FEMA zones — over 25% of flood claims come from low-to-moderate risk areas. After any flood event, test your water before drinking.
Source: FEMA National Flood Insurance Program (NFIP) claims data, FEMA flood zone designations.
What You Can Do in Rocklin
- Test your water at home. City-level data shows averages — your tap may differ. Lead testing is especially recommended given the area's lead levels.
- Install a certified water filter. Filters rated for Stage 2 DBP Rule can reduce the most common contaminant found in Rocklin's water.
- Check your home's plumbing. Homes built before 1986 may have lead solder in pipes. A licensed plumber can assess your risk.
- Review your water system's CCR. Your utility publishes an annual Consumer Confidence Report with detailed test results. Request it or find it online.
Deep Dive Reports
Detailed analysis for Rocklin, CA