G & W WSC
PWS ID: TX0930048 · WALLER, Texas 77484-1219
G & W WSC serves 1,650 people in WALLER, Texas using Groundwater water sources. It has 213 recorded EPA violations, including 167 health-based violations. No PFAS contamination was detected in UCMR5 testing.
Water Quality Snapshot: G & W WSC
G & W WSC is a local-owned community water system that delivers drinking water to 1,650 residents in WALLER, Texas (Grimes County) through 550 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 213 total violations for this system , of which 167 (78%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 7 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.
The most frequently cited contaminant at this system is Gross Alpha, Excl. Radon and U, recorded in 80 violations (MCL, health-based). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.
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. G & W WSC's 213 violations sit above 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.
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 550
- County
- Grimes
- School/Daycare
- No
- MCL Violations
- 167
- Monitoring Violations
- 7
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MCL | 80 | 2024 |
| Combined Radium (-226 and -228) | MCL | 75 | 2024 |
| Public Notice | Other | 37 | 2024 |
| Arsenic | MCL | 12 | 2022 |
| Chlorine | MR | 4 | 2014 |
| Consumer Confidence Rule | Other | 2 | 2003 |
| Lead and Copper Rule | MR | 2 | 2014 |
| Coliform (TCR) | MR | 1 | 2009 |
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 G & W 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 TX0930048 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 G & W 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 |
|---|---|---|---|---|
| 2024 | Gross Alpha, Excl. Radon and U | MCL | 80 | SDWIS / TX0930048 / 4000 |
| 2024 | Combined Radium (-226 and -228) | MCL | 75 | SDWIS / TX0930048 / 4010 |
| 2024 | Public Notice | Other | 37 | SDWIS / TX0930048 / 7500 |
| 2022 | Arsenic | MCL | 12 | SDWIS / TX0930048 / 1005 |
| 2014 | Chlorine | MR | 4 | SDWIS / TX0930048 / 0999 |
| 2014 | Lead and Copper Rule | MR | 2 | SDWIS / TX0930048 / 5000 |
| 2009 | Coliform (TCR) | MR | 1 | SDWIS / TX0930048 / 3100 |
| 2003 | Consumer Confidence Rule | Other | 2 | SDWIS / TX0930048 / 7000 |
How G & W WSC Compares
Cross-reference this system's record against state averages and the federal MCL framework for context.
| Metric | G & W WSC | Texas avg | Federal benchmark |
|---|---|---|---|
| Total violations | 213 | 101.5 | SDWA compliance — any non-zero count is a recorded breach |
| Health-based violations | 167 | 22.2 | Indicates a contaminant exceeded a federal MCL |
| PFAS detection | None | 93.1% | EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt |
| Population served | 1,650 | 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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Related Data for Texas
Read our methodology — how this data is sourced, computed, and verified.