Lead In Water (LIW) Sampling Project

Water Fountain

Lead-In-Water (LIW) Sampling Project

Douglas County School District (DCSD), in partnership with our water source providers, proactively launched a massive effort in December 2017 to test water fixtures in all schools and staff support sites.

The majority of buildings in DCSD are relatively new, with most schools built after 1990. This is important because a 1986 federal law limits the use of lead in plumbing. Some older Colorado homes, schools and other buildings could still have old pipes or fixtures containing lead. 

RELATED: Want to learn how to reduce exposure to lead in your home? Check out these tips from the Environmental Protection Agency.

The partnership team developed a water sampling protocol using both federal and state guidance to sample the drinking water. For all sites built before 1990, samples were taken from all drinking water fixtures including drinking water fountains, bottle fillers, classroom sinks (where students may fill water bottles), kitchen sinks, etc. At buildings constructed after 1990, samples were taken from 10 percent of the drinking water fixtures.

Lead is measured by the number of parts per billion (ppb). The Environmental Protection Agency recommends action be taken if lead levels are more than 20 ppb. However, the Colorado Department of Public Health and Environment (CDPHE) strongly recommends that all water fixtures in schools that provide water for drinking or cooking meet a standard of 15 ppb of lead or less. A way to visualize 1 ppb in water is to think of it as one drop in one billion drops of water.

The DCSD water sampling project used a threshold of 15 ppb or less (0.015). A total of 1,565 samples were tested at DCSD schools and staff support sites. The overwhelming majority of samples (96.4%) came back below the 15 ppb threshold following the first test and required no further action. Following a second round of validation testing, another 1.9% were found to be below the threshold.

The remaining fixtures were removed, or replaced and tested again to ensure acceptable levels were present. The majority of the remaining fixtures which required attention were sinks found in science rooms. 

This proactive project was made possible thanks to the strong partnership between DCSD and the local water municipalities in Douglas County. Whether they made a monetary donation or provided staff to help complete the project, all came together to ensure a healthy environment for our students and staff.

Please select a school below to view the most recent water test results for that building. 

Lead Testing Reports

Below is a legend for understanding each site's report.

Site: Where location sampling was conducted.

Sample ID: Specific fixture that was tested, may be preceded by a number ID tag.

Initial Result: Result of first sample taken for that fixture. Shown in parts per billion. 15 ppb is the threshold.

1st Collection Date: Date that the first sample was taken.

Validation Result: If a fixture surpassed the threshold of 15 ppb on the initial sampling, we conducted a sample to validate the results. This is called the validation sample.

2nd Collection Date: This was the date that the validation sample was taken.

Clearance Result: Once replacement of a fixture was complete, a final clearance sample was taken to clear the fixture. This is the clearance sample.

3rd Collection Date: This was the date that the clearance sample was taken. 

Thank you to our partners

Castle Rock Water

Centennial Water

denver water

parker water

the pinery

roxborough water and sanitation


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In compliance with Titles VI & VII of the Civil Rights Act of 1964, Title IX of the Education Amendments of 1972, Section 504 of the Rehabilitation Act of 1973, the Age Discrimination in Employment Act of 1967, the Americans with Disabilities Act, the Genetic Information Nondiscrimination Act of 2008, and Colorado law, the Douglas County School District RE-1 does not unlawfully discriminate against otherwise qualified students, employees, applicants for employment, or members of the public on the basis of disability, race, creed, color, sex, sexual orientation, marital status, national origin, religion, ancestry, or need for special education services. Discrimination against employees and applicants for employment based on age, genetic information, and conditions related to pregnancy or childbirth is also prohibited in accordance with state and/or federal law. Complaint procedures have been established for students, parents, employees, and members of the public. The School District's Compliance Officer and Title IX Coordinator to address complaints alleging sexual harassment under Title IX is Aaron Henderson, 620 Wilcox Street, Castle Rock, Colorado, [email protected], 720-433-1083.

Outside Agencies

Complaints regarding violations of Title VI, (race, national origin), Title IX (sex, gender), Section 504/ADA (handicap or disability), may be filed directly with the Office for Civil Rights, U.S. Department of Education, 1244 North Speer Blvd., Suite 310, Denver, CO 80204. Complaints regarding violations of Title VII (employment) and the ADEA (prohibiting age discrimination in employment) may be filed directly with the Federal Office of Equal Employment Opportunity Commission, 303 E. 17th Ave., Suite 510, Denver, CO 80202, or the Colorado Civil Rights Commission, 1560 Broadway, Suite 1050, Denver, CO 80202.


Special Education records which have been collected by Douglas County School District related to the identification, evaluation, educational placement, or the provision of special education in the district, must be maintained under state and federal laws for the period of five (5) years after special education services have ended for the student. Special education services end when the student is no longer eligible for services, graduates, or completes his/her educational program at age 21, or moves from the district. This notification is to inform parents/guardians and former students of Douglas County School District's intent to destroy the special education records of students who exited special education services as of June 30, 2016. These records will be destroyed in accordance with state law unless the parent/guardian or eligible (adult) student notifies the school district otherwise. After five years, the records are no longer useful to the district, but may be useful to the parent/guardian or former student in applying for social security benefits, rehabilitation services, college entrance, etc. The parent/guardian or eligible (adult) student may request a copy of the records by requesting the records by email to [email protected]