Sherman, TX: 12 Violations — 80/100 (2026)
3 ZIP codes · 19 water systems · Updated 2026-06-03
How does Sherman tap water hold up under EPA scrutiny? Above average for TX — documented violations are uncommon and the safety grade reflects a clean overall record.
How Sherman Compares
Data: EPA SDWIS Last verified: 2026-06-03
What You Should Know About Sherman Water
- Your city's water systems recorded 12 violations in the past 5 years.
- Average lead level: 0.0008 mg/L.
- Homes built before 1986: 60% — older plumbing may contain lead solder.
- Estimated remediation: $1,900 per household.
- CDC health risk index: 13.11 — above typical levels.
Who Supplies Your Water in Sherman
Water service in Sherman, TX is split across 3 utilities out of 19 tracked federally, each operating its own infrastructure and compliance record.
Overview
We track water quality and home safety data for 3 ZIP codes in Sherman, Texas (population ~53,645), covering 19 community water systems serving approximately 235,699 people region-wide.
3 of 3 ZIP codes (100%) have recorded EPA violations. All violations are monitoring/reporting type.
Home Safety Score
Average Home Safety Score for Sherman: B (80/100)
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
Sherman water systems draw from: Groundwater, Surface water.
Lead & Copper
- Average lead level (90th percentile): 0.0008 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)
- Zone 1 (High): 0 ZIP codes
- Zone 2 (Moderate): 0 ZIP codes
- Zone 3 (Low): 3 ZIP codes
Top Contaminants
| Contaminant | Category | Violations | ZIPs Affected |
|---|---|---|---|
| Contaminant 2946 | Other | 4 | 3 |
| Total Organic Carbon | Disinfection Byproducts | 4 | 3 |
| E. coli | Microbiological | 4 | 3 |
| Fecal Coliform | Microbiological | 4 | 3 |
Areas with Most Violations
| ZIP Code | Safety Score | Violations | Health-Based | System |
|---|---|---|---|---|
| 75090 | B | 4 | 0 | City of Sherman |
| 75091 | A | 4 | 0 | City of Sherman |
| 75092 | B | 4 | 0 | City of Sherman |
All ZIP Codes in Sherman
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.
Health Outcomes in Sherman
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 Sherman Water
Based on EPA violation records. Check your ZIP code report for system-specific contaminant data.
Housing & Infrastructure in Sherman
With 60% 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
Decades of residential development in Sherman took place before the two main regulatory milestones that reduced plumbing-era lead risk: the phase-out of lead pipes before 1970, and the federal ban on lead solder in 1986. With a median build year of 1981, the housing stock here is anchored in that earlier period. The distinction between pre-1970 and 1970-to-1986 construction matters: the oldest homes may have lead pipes in the service line and lead solder in the copper joints, while the 1970-to-1986 tier still carries the solder risk even after lead pipes became less common. Together, these two risk layers affect a majority of the residential properties in the city — a fact the aggregate water quality data doesn't directly reveal.
Over half of homes in Sherman 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.
Cost Context: What Remediation Means for Sherman Homeowners
Low proportionality — that's the Sherman picture when remediation costs are placed against typical home equity.
Remediation costs in Sherman are relatively low compared to home values. The $1,233–$2,833 estimated range is a small fraction of median property value. Home values are 14% above the Texas average.
Lead Exposure Risk for Children in Sherman
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.
Although utility-side compliance with federal Lead and Copper requirements remains the system reference, that compliance does not extend down into interior plumbing. With 60% of Sherman stock built before the solder ban and aggregate readings at or beyond the action mark, a household-level sample becomes the practical way to close that information gap.
Sources: EPA Lead and Copper Rule, U.S. Census Bureau ACS, CDC childhood lead poisoning prevention guidelines.
Flood & Climate Risk in Sherman
Sherman's NFIP record reflects high flood exposure — 553 claims spanning a long history of significant events, with 100% of ZIP codes in FEMA-designated zones. High flood frequency increases the probability of water quality disruptions at each point in the supply chain: treatment facilities, transmission infrastructure, and private wells all face elevated stress risk when flooding is a recurring feature rather than a rare exception.
Sherman has a significant flood history with 553 FEMA flood insurance claims on record, averaging $11,437 per claim. With 100% of ZIP codes in FEMA-designated flood zones, flood risk is a major concern for homeowners and water quality.
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>$1,900</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.
Deep Dive Reports
Detailed analysis for Sherman, TX