Herbicides & Fumigants Analysis - 1/02/2025
Fumigants Analysis - 3/06/2025

‍1. Herbicides in Drinking Water Report (Lexington Heights Subdivision)
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This analysis screened for a wide range of regulated and non-regulated herbicides, including 2,4-D, Silvex, Dalapon, and others. All substances were either not detected or detected at trace levels far below safety thresholds. These findings confirm that herbicide levels in the sampled water are within acceptable ranges and meet all TNI (2016) standards and are in compliance with TCEQ regulations for public drinking water.
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2. EDB and DBCP Analysis Report (Lexington Heights Subdivision)

This report presents the results of testing for volatile organic compounds related to pesticide byproducts—specifically ethylene dibromide, dibromochloropropane, and 1,2,3-trichloropropane. All tested substances were found well below detection limits, with values less than 0.01–0.05 µg/L, meeting all standards for public drinking water under TNI (2016) and TCEQ drinking water guidelines.

Carbamates by HPLC Analysis - 1/09/2025
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1. Carbamate Pesticides (Lexington Heights Subdivision)‍

This laboratory analysis tested for a group of carbamate pesticides, which are commonly used in agricultural and pest control settings. The report includes both regulated compounds, such as Aldicarb, Carbofuran, Baygon, and Methomyl. All compounds were either monitored compounds, such as Aldicarb, Carbofuran, Baygon, and Methomyl. All compounds were either not detected or present in trace amounts well below regulatory concern levels. These results confirm that the water sample from the Lexington Heights Subdivision is in full compliance with TNI (2016) laboratory standards for public drinking water.

This analysis was performed using Texas Commission on Environmental Quality (TCEQ) safety requirements for public drinking water. This analysis was performed using EPA Method 531.1 and validated by the Texas Department of State Health Services.

Pesticides, PCBs & SVOCs in Drinking Water - 1/14/2025
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1. Organochlorine Pesticides & Aroclors Analysis Report (Lexington Heights Subdivision)
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This analysis, conducted using EPA Method 508.1, tested for a range of organochlorine pesticides and polychlorinated biphenyls (PCBs) known as Aroclors. Regulated compounds such as Chlordane, Endrin, Heptachlor epoxide, and Toxaphene were either not detected or present at levels well below regulatory concern. Aroclors — historically used in industrial applications — were also screened, including Aroclor 1016, 1221, 1232, 1242, 1248, 1254, and 1260.

These were all either not detected or detected at very low levels. Aroclor identification meets TNI (2016) requirements, though the quantification is noted as not accredited. All results are compliant with Texas Commission on Environmental Quality (TCEQ) drinking water standards.

‍2. Semi-Volatile Organic Compounds (SVOCs) Analysis Report (Lexington Heights Subdivision)
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This comprehensive test analyzed for a broad spectrum of semi-volatile organic compounds (SVOCs) — including both regulated and monitored contaminants such as Atrazine, Heptachlor, Simazine, Di(2-ethylhexyl) phthalate, and numerous polycyclic aromatic hydrocarbons (PAHs). All substances, including trace contaminants like, Dimethylphthalate, Fluorene, Naphthalene, Pyrene, and Metolachlor, were either undetected or present in concentrations significantly below federal and state safety thresholds.

The analysis was conducted using EPA Method 525.2 and meets all TNI (2016) laboratory standards. The results confirm compliance with TCEQ regulations and indicate the water supply remains safe and within acceptable environmental limits.

VOCs & Nitrates in Drinking Water - 3/04/2025
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1. Volatile Organic Compounds (VOCs) Analysis Report (Lexington Heights Subdivision)
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This report provides a comprehensive screening for volatile organic compounds (VOCs) in drinking water using EPA Method 524.2. VOCs include a wide range of industrial solvents, gasoline-related compounds, and chemical byproducts such as benzene, toluene, vinyl chloride, carbon tetrachloride, and many others. All tested compounds, both regulated and monitored, were found below detection limits or present at trace levels well under public health and safety thresholds. The results meet the criteria of the TNI (2016) standard and are compliant with TCEQ water quality regulation.
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Sample condition was deemed acceptable, and the water remains safe for consumption.

2. Nitrate in Drinking Water Analysis Report (Lexington Heights Subdivision)
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This report tests for nitrate levels in drinking water, a key indicator of potential agricultural or wastewater contamination. The analysis was conducted using EPA Method 353.2, which is well below the maximum contaminant level (MCL) of 10 mg/L set by the EPA. These findings confirm that nitrate levels are less than 0.05 mg/L, which is well below the maximum contaminant level (MCL) of 10 mg/L set by the EPA. These findings confirm that nitrate levels are well within safe and acceptable drinking water limits, meeting both TNI (2016) and TCEQ standards.

Radiological Water Quality Reports - 03/27/2025
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1. Radiological & Physical Characteristics Analysis Report (Lexington Heights Subdivision)
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This analysis includes a series of basic physical water quality characteristics and a radiological screening. It tested for acidification, pH, turbidity, visible particles, and uranium presence in drinking water. All results were found to be within acceptable limits. Uranium was measured at < 0.0010 mg/L, which is well below the EPA maximum contaminant level (MCL) of 0.030 mg/L. Other physical properties such as pH and turbidity were marked as completed and acceptable, per EPA and SM standards.

These findings confirm the water meets all TNI (2016) standards and TCEQ regulations for both physical and radioactive parameters.

‍2. Gross Alpha, Beta & Radium Isotopes Analysis Report (Lexington Heights Subdivision)
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This report focuses on radioactive isotopes and particle activity levels, including Gross Alpha, Gross Beta. All values are within regulatory thresholds set by the EPA for radionuclides in drinking water, ensuring continued safety and compliance for the public supply. Testing was performed under EPA 900.0 and SM 7500 series methods, and results meet TNI (2016) laboratory standards.

Private Laboratory Report - 03/27/2025

Private Laboratory Water Quality Report – 2025
Conducted by: North Water District Laboratory Services (NWDLS)

This report presents the results of a private laboratory analysis conducted by North Water District Laboratory Services (NWDLS) on drinking water samples collected from Lexington Heights Subdivision on March 12, 2025. The testing was performed in compliance with NELAP and TCEQ certification standards.

The laboratory analyzed a full range of water quality parameters including pH, temperature, conductivity, total dissolved solids (TDS), total hardness, alkalinity, and levels of calcium, magnesium, sodium, iron, manganese, chloride, sulfate, and orthophosphate. Uranium was also tested and detected at a concentration below 0.001 mg/L, far under the EPA’s maximum contaminant level.

All results were found to be within acceptable ranges, indicating that the water is safe for consumption. Quality control measures including duplicates, blanks, and matrix spike recoveries confirmed the accuracy and reliability of the data. This analysis meets all requirements under the TNI (2016) standards and is in full compliance with applicable TCEQ water quality regulations.