Mertens, TX: 1 Health Violation — 94/100 (2026)
1 ZIP code · 4 water systems · Updated 2026-06-03
Unlike many cities its size in TX, Mertens 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 Mertens Compares
Data: EPA SDWIS Last verified: 2026-06-03
Key Facts for Mertens Residents
- Your city's water systems recorded 40 violations in the past 5 years.
- Average lead level: 0.0007 mg/L.
- Homes built before 1986: 57% — older plumbing may contain lead solder.
- Estimated remediation: $300 per household.
- CDC health risk index: 14.22 — above typical levels.
Mertens's Water Providers
Residential water service in Mertens, TX is divided among 3 separate utilities, drawn from 4 systems on file with federal regulators.
Overview
We track water quality and home safety data for 1 ZIP code in Mertens, Texas (population ~245), covering 4 community water systems serving approximately 9,632 people region-wide.
1 of 1 ZIP code (100%) have recorded EPA violations. 1 health-based violation documented.
Home Safety Score
Average Home Safety Score for Mertens: A (94/100)
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
Mertens 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 3 (Low Risk)
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Consumer Confidence Report Rule | Reporting | 36 | 1 |
| Lead and Copper Rule | Treatment Technique | 14 | 1 |
| Revised Total Coliform Rule | Microbiological | 12 | 1 |
| Surface Water Treatment Rule | Treatment Technique | 8 | 1 |
| Stage 1 DBP Rule | Treatment Technique | 6 | 1 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 76666 | A | 40 | 1 | Navarro Mills Water Supply Corporation |
All ZIP Codes in Mertens
- 76666 [A] — 40 violations ⚠
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.
Mertens 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 Mertens's Water?
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Mertens Infrastructure Age
With 57% 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
The lead that enters tap water in older homes often comes not from the municipal supply but from the home's own plumbing — from solder used in copper joints before the 1986 federal ban, or from lead pipes installed before 1970. In Mertens, where the median build year is 1986, these older materials are widespread. More than half the residential stock predates the 1986 solder ban, and a significant fraction predates 1970 as well. For residents in those homes, the city-wide water quality picture is a less relevant frame than the specific materials inside their own walls and under their own street.
Over half of homes in Mertens 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 Mertens
Remediation costs in Mertens are small relative to typical property values — the cost-to-value ratio here is favorable.
Remediation costs in Mertens are relatively low compared to home values. The $150–$600 estimated range is a small fraction of median property value. Home values are 60% below the Texas average.
Mertens: 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.
Households with kids in the home — for whom CDC guidance places particular weight on minimizing exposure — face a specific local picture in Mertens. 57% of homes here come from the pre-rule era, and aggregate utility samples either approach or cross 0.015 mg/L. A baseline draw-test kit and certified lead-removal filtration are available via retailer networks for households confirming conditions at a specific tap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Deep Dive Reports
Detailed analysis for Mertens, TX