Drinking water quality at Entz
content last updated Aug. 20, 2017, 11 a.m.

Background

In January 2017, the Arizona Department of Environmental Quality, Schools Facilities Board and Arizona Department of Health Services partnered to conduct a proactive, voluntary school drinking water screening program to test for lead content. Mesa Public Schools joined the effort to ensure the district was providing safe, healthy learning environments.

Districtwide screening sample results were received in May 2017. For any result greater than 15 ppb lead, the following actions were taken at Entz:

  • Access to the drinking water source was blocked and an out-of-service sign posted on May 17.
  • Staff and families were informed of the affected location(s) on May 18.
  • Confirmation samples were collected to determine the cause of the elevated lead levels and appropriate remediation May 31-June 2.
July 3 remediation

Based on the confirmation testing results, the faucet/bubbler fixtures in classrooms A1 and C2 were replaced.

Sampling scheduled for Friday, July 14

Test kits from the laboratory have been received and the samples will be drawn Friday, July 14, beginning at 8 a.m. Samples to be taken:

  • Post-remediation samples from A1 and C2
  • Screening samples from all remaining drinking-water sources that have not been tested to date
Anyone is welcome to observe the sampling.

July 14 sampling complete

Three post-remediation samples and 25 screening samples were taken and will be submitted to the testing lab. One faucet in the staff lounge was not sampled because we were short one sample bottle.

Results of July 14 sampling received

Results for samples taken July 14 were received July 19. These include post-remediation results for A1, A5 and C2 and screening results for most of the remaining drinking water sources on campus. All results were below 15 ppb. The data is in the table below labeled "Results for July 14 samples, part 1."

These samples were submitted to a certified laboratory by Mesa Public Schools to expedite results. As part of the statewide program, ADEQ will be sending sample kits for the three post-remediation sites.

Additional results received

Results for samples taken from the outdoor drinking fountains were received July 20. All results were below 5 ppb. The data is in the table below labeled "Results for July 14 samples, part 2."

Final ADEQ results received

The official reports of the post-remediation test results were received from the ADEQ and Arizona School Facilities Board. The data is in the table below labeled "Final ADEQ results."

Initial screening results

Type of Fixture Location of Fixture Lead, ppb Sample Number Date of Collection Time of Collection Sample Collector
Drinking Fountain Multipurpose Room <5.0 1001 26:Apr:2017 06:10 Allan McKee
Tap/Sink A1 500 1002 26:Apr:2017 06:12 Allan McKee
Tap/Sink/Faucet B2 9.3 1003 26:Apr:2017 06:16 Allan McKee
Tap B1 7.3 1004 26:Apr:2017 06:14 Allan McKee
Tap B4 <5.0 1005 26:Apr:2017 06:15 Allan McKee
Tap C2 21 1006 26:Apr:2017 06:18 Allan McKee
Hose Bib Power Plant/Chiller 5.5 1007 26:Apr:2017 06:20 Allan McKee
Tap E4 9.0 1008 26:Apr:2017 06:23 Allan McKee
Tap F2 6.7 1009 26:Apr:2017 06:25 Allan McKee
Tap X4 8.6 1011 26:Apr:2017 06:27 Allan McKee
Tap X2 6.3 1012 26:Apr:2017 06:29 Allan McKee
Tap X5 <5.0 1013 26:Apr:2017 06:32 Allan McKee


PDF of results

Confirmation testing results

Type of Fixture Location Lead, ppb Sample Identification Number Date of Collection Time of Collection Sample Collector
Tap / Sink A1 1300 D2 1 Confirmation-First Draw 05/31/2017 09:15 Allan McKee
Tap / Sink A1 1.5 2 Confirmation-Flush 05/31/2017 09:16 Allan McKee
Tap / Sink A1 95 3 Confirmation-First Draw Day Two 06/01/2017 06:25 Allan McKee
Tap / Sink A-6 9.1 10 Screening 06/01/2017 06:30 Allan McKee
Tap / Sink A-2 7.6 4 Screening 06/01/2017 06:26 Allan McKee
Tap / Sink A-5 19 5 Screening 06/01/2017 06:29 Allan McKee
Tap / Sink A-4 7 6 Screening 06/01/2017 06:28 Allan McKee
Tap / Sink A-7 13 7 Screening 06/01/2017 06:31 Allan McKee
Tap / Sink A-3 8.6 8 Screening 06/01/2017 06:27 Allan McKee
Tap / Sink C2 16 1 Confirmation-First Draw 06/01/2017 06:35 Allan McKee
Tap / Sink C2 0.51 2 Confirmation-Flush 06/01/2017 06:36 Allan McKee
Tap / Sink C2 3.6 3 Confirmation-First Draw Day Two 06/02/2017 06:10 Allan McKee
Tap / Sink C-1 10 4 Screening 06/02/2017 06:12 Allan McKee
Tap / Sink C-3 4.7 5 Screening 06/02/2017 06:13 Allan McKee
Tap / Sink C-4 7.3 6 Screening 06/02/2017 06:14 Allan McKee
Tap / Sink C-5 12 7 Screening 06/02/2017 06:15 Allan McKee
Tap / Sink C-6 5.3 8 Screening 06/02/2017 06:16 Allan McKee
Tap / Sink D-1 3.4 9 Screening 06/02/2017 06:17 Allan McKee


PDF of results

Results for July 14 samples

Part 2

Location Lead, ppb Location Lead, ppb Location Lead, ppb
Outside A2 <5 Outside C5 <5 Outside media center <5
Outside B2 <5 Outside D3 <5 Outside custodial <5

PDF of results

Part 1

Location Lead, ppb Location Lead, ppb Location Lead, ppb
A1* 5.1 D2 <5.0 E5 <5.0
A5* 13 D3 <5.0 E6 <5.0
B3 <5.0 D4 <5.0 F1 8.7
B4 <5.0 E1 <5.0 Kitchen 12
C2* 6.3 E2 <5.0 MPR <5.0
D1 <5.0 E3 <5.0 * post-remediation

PDF of results

Final ADEQ results

Fixture	Location	Sample	Lead, ppb Drinking Fountain	A1	First Draw	<5.0 Drinking Fountain	A1	Flush	<5.0 Drinking Fountain	A1	First Draw Day Two	<5.0 Drinking Fountain	A5	First Draw	<5.0 Drinking Fountain	A5	Flush	<5.0 Drinking Fountain	A5	First Day Draw Two	<5.0 Drinking Fountain	C2	First Draw	<5.0 Drinking Fountain	C2	Flush	7.8 Drinking Fountain	C2	First Draw Day Two	<5.0

Post-remediation results

complete lab report, part 1

Post-remediation results

complete lab report, part 2

ADEQ Fact Sheet
DHS Things to Know
Screening protocol

sample collection

Confirmation protocol

sample collection

Confirmation testing

complete lab report

Definition of lead-free
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Questions? Contact us

Helen Hollands
480-472-0498