CONCORD-ROBBINS WSC
PWS ID: TX1450018 · MARQUEZ, Texas 77865-0035
CONCORD-ROBBINS WSC serves 9,190 people in MARQUEZ, Texas using Groundwater water sources. It has 26 recorded EPA violations, including 3 health-based violations. PFAS "forever chemicals" were detected in UCMR5 testing (1 compound found).
Water Quality Snapshot: CONCORD-ROBBINS WSC
CONCORD-ROBBINS WSC is a local-owned community water system that delivers drinking water to 9,190 residents in MARQUEZ, Texas (Leon County) through 3,123 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 26 total violations for this system , of which 3 (12%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 13 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.
The most frequently cited contaminant at this system is LEAD AND COPPER RULE REVISIONS, recorded in 3 violations (RPT). Under EPA's UCMR5 PFAS monitoring program, 1 PFAS compound was detected in samples collected from this system, with a maximum reported concentration of 9.67 ppt. PFAS are persistent synthetic chemicals linked to health effects at very low exposure levels.
Across Texas, EPA tracks 7,351 public water systems serving 33,253,313 people, with 746,210 cumulative violations and 162,945 health-based violations on record. About 90% of systems in the state carry at least one violation, and state-wide the average per system is 101.5 violations. CONCORD-ROBBINS WSC's 26 violations sit below the Texas average. Statewide, 1,068 of 1,147 UCMR5-tested systems have reported PFAS detections (93.1%). All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.
1 PFAS "forever chemicals" detected in testing under EPA's UCMR5 monitoring program.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 3,123
- County
- Leon
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 13
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| LEAD AND COPPER RULE REVISIONS | RPT | 3 | 2024 |
| LEAD AND COPPER RULE REVISIONS | TT | 3 | 2024 |
| Consumer Confidence Rule | Other | 2 | 2003 |
| 2,4-D | MR | 1 | 2021 |
| 2,4,5-TP | MR | 1 | 2021 |
| CYANIDE | MR | 1 | 2021 |
| Aldicarb sulfoxide | MR | 1 | 2021 |
| Dalapon | MR | 1 | 2021 |
| ETHYLENE DIBROMIDE | MR | 1 | 2021 |
| Picloram | MR | 1 | 2021 |
| Dinoseb | MR | 1 | 2021 |
| Aldicarb sulfone | MR | 1 | 2021 |
| Carbofuran | MR | 1 | 2021 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | 2021 |
| Aldicarb | MR | 1 | 2021 |
| OXAMYL | MR | 1 | 2021 |
| Public Notice | Other | 1 | 2025 |
PFAS Testing Results (UCMR5)
Results from EPA's Fifth Unregulated Contaminant Monitoring Rule. 1 of 300 samples detected PFAS.
| Contaminant | Date | Result | MRL | Status |
|---|---|---|---|---|
| PFHpA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/23/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFUnA | 4/23/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFHxA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDoA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFDA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFOA | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFOS | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| lithium | 4/23/2024 | <9 µg/L | 9 µg/L | Not Detected |
| PFHxS | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| ADONA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFBS | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 4/23/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFNA | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFMBA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NEtFOSAA | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFTrDA | 4/23/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFTA | 4/23/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| PFHpS | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFPeS | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFEESA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMPA | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| 8:2 FTS | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| NFDHA | 4/23/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| 8:2 FTS | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 4:2 FTS | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 6:2 FTS | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFBA | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFMPA | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| ADONA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| HFPO-DA | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| PFPeA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFMBA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| PFEESA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NFDHA | 4/23/2024 | <0.02 µg/L | 0.02 µg/L | Not Detected |
| PFHpS | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| 9Cl-PF3ONS | 4/23/2024 | <0.002 µg/L | 0.002 µg/L | Not Detected |
| PFTrDA | 4/23/2024 | <0.007 µg/L | 0.007 µg/L | Not Detected |
| PFPeS | 4/23/2024 | <0.004 µg/L | 0.004 µg/L | Not Detected |
| PFHpA | 4/23/2024 | <0.003 µg/L | 0.003 µg/L | Not Detected |
| NMeFOSAA | 4/23/2024 | <0.006 µg/L | 0.006 µg/L | Not Detected |
| PFTA | 4/23/2024 | <0.008 µg/L | 0.008 µg/L | Not Detected |
| NEtFOSAA | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
| 11Cl-PF3OUdS | 4/23/2024 | <0.005 µg/L | 0.005 µg/L | Not Detected |
Verify This Water System
The figures above are aggregated from EPA's public databases. To verify the underlying records — or to file a complaint, request a Consumer Confidence Report, or check current monitoring status — go directly to the federal and state regulators that enforce the Safe Drinking Water Act for CONCORD-ROBBINS WSC.
EPA SDWIS — Federal Reports
EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:
View PWS ID TX1450018 on SDWISSource: EPA SDWIS Federal Reports Search
Texas Drinking Water Authority
Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch is the primacy agency that licenses and inspects CONCORD-ROBBINS WSC under EPA-delegated authority.
Open TX regulator portalSource: Texas Commission on Environmental Quality (TCEQ) — Drinking Water Watch
Violation Timeline
Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.
| Year (latest) | Contaminant | Category | Count | EPA Record |
|---|---|---|---|---|
| 2025 | Public Notice | Other | 1 | SDWIS / TX1450018 / 7500 |
| 2024 | LEAD AND COPPER RULE REVISIONS | RPT | 3 | SDWIS / TX1450018 / 5200 |
| 2024 | LEAD AND COPPER RULE REVISIONS | TT | 3 | SDWIS / TX1450018 / 5200 |
| 2021 | 2,4-D | MR | 1 | SDWIS / TX1450018 / 2105 |
| 2021 | 2,4,5-TP | MR | 1 | SDWIS / TX1450018 / 2110 |
| 2021 | CYANIDE | MR | 1 | SDWIS / TX1450018 / 1024 |
| 2021 | Aldicarb sulfoxide | MR | 1 | SDWIS / TX1450018 / 2043 |
| 2021 | Dalapon | MR | 1 | SDWIS / TX1450018 / 2031 |
| 2021 | ETHYLENE DIBROMIDE | MR | 1 | SDWIS / TX1450018 / 2946 |
| 2021 | Picloram | MR | 1 | SDWIS / TX1450018 / 2040 |
| 2021 | Dinoseb | MR | 1 | SDWIS / TX1450018 / 2041 |
| 2021 | Aldicarb sulfone | MR | 1 | SDWIS / TX1450018 / 2044 |
| 2021 | Carbofuran | MR | 1 | SDWIS / TX1450018 / 2046 |
| 2021 | 1,2-DIBROMO-3-CHLOROPROPANE | MR | 1 | SDWIS / TX1450018 / 2931 |
| 2021 | Aldicarb | MR | 1 | SDWIS / TX1450018 / 2047 |
How CONCORD-ROBBINS WSC Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | CONCORD-ROBBINS WSC | Texas avg | Federal benchmark |
|---|---|---|---|
| Total violations | 26 | 101.5 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 3 | 22.2 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | 1 compound | 93.1% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 9,190 | 4,524 | Sizing context for compliance burden |
Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 7,351 regulated public water systems in Texas.
Federal MCL reference — Safe Drinking Water Act thresholds ▼
| Contaminant | Federal MCL / Action Level | Note |
|---|---|---|
| Lead | 0 mg/L (Action Level: 0.015 mg/L) | Lead and Copper Rule treatment technique |
| Arsenic | 0.010 mg/L (10 ppb) | Health-based MCL since 2006 |
| Total Coliform | Treatment technique (RTCR) | Indicator organism, monitoring trigger |
| PFOA / PFOS (PFAS) | 4.0 ppt each (final 2024 rule) | Compliance deadline 2029 |
| Nitrate (as N) | 10 mg/L | Acute health risk for infants |
Frequently Asked Questions
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