PFAS Monitoring Results Demonstrate Compliance with Federal Drinking Water Standards

Round Mountain Water and Sanitation District recently completed required monitoring for per- and polyfluoroalkyl substances (PFAS), commonly known as “forever chemicals.” Laboratory analyses conducted by Colorado Analytical Laboratories confirmed that none of the six EPA-regulated PFAS compounds were detected in drinking water samples collected from the District's water system.

The testing was performed as part of ongoing efforts to comply with federal drinking water regulations and to ensure the continued delivery of safe, high-quality water to District customers.

Sampling Program

Drinking water samples were collected on May 19, 2026, from two locations within the District's water system:

• Sample Point 007 (Facility ID 007)
• Sample Point 011 (Facility ID 011)

Both samples were analyzed using EPA Method 533, an approved analytical method designed specifically for detecting PFAS compounds in drinking water. Samples were received by the laboratory on May 20, 2026, analyzed on May 29, 2026, and reported on June 8, 2026.

Results

The laboratory tested for six PFAS compounds currently regulated by the U.S. Environmental Protection Agency:

PFAS CompoundEPA Maximum Contaminant Level (ng/L)Sample Point 007Sample Point 011

HFPO-DA (GenX)10Not DetectedNot Detected

PFBS10Not DetectedNot Detected

PFHxS10Not DetectedNot Detected

PFNA10Not DetectedNot Detected

PFOA4Not DetectedNot Detected

PFOS4Not DetectedNot Detected

All results were reported as ND (Not Detected), indicating that concentrations were below the laboratory reporting limits and could not be measured in either sample.

Quality Assurance and Laboratory Validation

The laboratory's quality control review confirmed the reliability of the analytical results. Method blanks showed no detectable contamination, laboratory control samples met established recovery criteria, and all surrogate recoveries fell within acceptable performance limits established for EPA Method 533. These quality assurance measures demonstrate that the testing procedures were performed properly and that the reported results are valid and reliable.

What These Results Mean

The results indicate that:

• No regulated PFAS compounds were detected in the District's drinking water.
• All sample results were well below EPA regulatory limits.
• The two sampling locations produced consistent results, indicating uniform water quality throughout the tested portions of the distribution system.
• The District is in compliance with current federal PFAS drinking water requirements.

Particularly noteworthy is the absence of PFOA and PFOS, two PFAS compounds that have the most stringent federal drinking water standards due to their potential health impacts.

Commitment to Safe Drinking Water

Round Mountain Water and Sanitation District remains committed to protecting public health through proactive monitoring, regulatory compliance, and ongoing water quality management. The 2026 PFAS monitoring results provide strong evidence that the District's drinking water continues to meet federal safety standards and remains safe for consumption.

The District will continue to perform required testing and monitoring to ensure that customers receive reliable, high-quality drinking water now and in the future.

Round Mountain Water and Sanitation District PFAS Testing Confirms Excellent Water Quality.docx