No. ADHS states there are no federal or state regulations in Arizona that require schools to test drinking water for lead, and its free testing program is voluntary. The federal Lead and Copper Rule does require community water systems to sample schools and child care facilities they serve, with a compliance date of November 1, 2027.
Is lead testing required for Arizona schools?
No. The Arizona Department of Health Services (ADHS) answers the question in its program Q&A: "No. There are no federal or state regulations in Arizona that require testing. Participation is voluntary." That answer covers "schools, childcare facilities, and Head Start programs."
There is one carve-out inside that answer. ADHS adds that "Head Start and Early Head Start programs must follow federal health and safety standards that require facilities to be free from hazards, including lead," and that testing drinking water for lead "is an important step in meeting these safety requirements." So testing is not mandated by name, but a Head Start program has a reason to do it.
ADHS runs a free program for schools and child care, built on EPA's 3Ts approach (training, testing and taking action). It is open to public schools, charter schools, private and public child care, home-based child care and Head Start programs. The enrollment steps are on our page about free lead testing for Arizona child care facilities.
What does the federal lead rule require of water systems?
Under the federal Lead and Copper Rule, the duty falls on the utility, not the school. The regulation at 40 CFR 141.92(a)(1) says "All community water systems must conduct public education and lead monitoring at the schools and child care facilities they serve" unless the facility meets both of these conditions: it was built or fully re-plumbed on or after January 1, 2014 (or the date the state adopted a lead-free standard, whichever is earlier), and it is not served by a lead, galvanized-requiring-replacement or unknown service line.
The key dates and mechanics:
- Compliance date. Section 141.80(a)(3) says systems "must comply with the requirements of this subpart no later than November 1, 2027."
- Outreach. At least once a year, the system has to contact schools and child care facilities about the health risks of lead in drinking water.
- Sampling pace. In the first five years, a system must sample at least 20 percent of the elementary schools and at least 20 percent of the child care facilities it serves each year, or follow an alternative schedule the state approves. After that, it samples elementary schools and child care on request, and secondary schools on request from the start.
- How many samples. The rule calls for "five samples per school and two samples per child care facility at outlets typically used to provide water for human consumption."
- Sample conditions. Each sample is 250 ml, and the water must have "remained stationary in the plumbing system of the sampling site (building) for at least 8 but no more than 18 hours."
The rule also lets a school or child care decline. A utility may count a refusal or non-response toward its yearly 20 percent after two outreach attempts. Declining does not make the lead question go away.
The regulation does not apply to a school that is itself a public water system, such as one on its own well. Section 141.92(a)(2) says "The provisions of this section do not apply to a school or child care facility that is regulated as a public water system." Those schools have their own monitoring duties. Our page on when a commercial property with a private well becomes a public water system explains the line.
Federal rules change, so confirm the current text at 40 CFR 141.92 before acting on dates. This page reflects the version we checked on the date above.
What number triggers action?
ADHS uses 10 parts per billion. Its program follows "the EPA action level of 10 parts per billion (ppb) for required follow-up." A result at or above that means the water source comes out of service while ADHS and a consultant do follow-up testing. A result below 10 ppb does not mean no lead. ADHS says "Even at levels below 10 ppb, lead may still be present," and EPA's goal for lead in drinking water is zero.
The first test is a first-draw sample. ADHS describes it as "collected after water has been sitting in the pipes for 8 to 18 hours," which shows the highest level the water could reach. What happens after a high result is covered in how schools fix drinking fountains that test high for lead.
How often should a school test?
ADHS gives a general guide, not a rule: "As a general guide, ADHS recommends that facilities test their drinking water at least every 5 years." It adds that frequency depends on plumbing, water quality and earlier results.
Older buildings deserve a closer look. ADHS notes that "Pipes, solder, and building fixtures, especially those installed before 1986, can release or leach small amounts of lead into the water." CDC lists the most common sources as "lead pipes, faucets, and plumbing fixtures." You cannot see, taste or smell lead, so only a test shows it.
What should a school do now?
Start with an inventory of every tap used for drinking or cooking: fountains, bottle fillers, kitchen sinks and classroom sinks. ADHS asks for that same tap inventory at enrollment. Then enroll in the free program, or ask the water utility about the sampling it is preparing to offer. Our page on how Arizona water systems prepare their service line material inventories explains the utility side, and how to test home water for lead covers the household version of the same question.