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Annual District Water Testing


GPPSS releases results of voluntary water testing

Grosse Pointe Public School System received the results of its voluntary water screening sampling and analysis for lead, copper and Legionella conducted over spring break. Like many school districts across the state, after the Flint crisis GPPSS wanted to be proactive in protecting its students and staff. Our district was among the first to begin voluntary testing, and has continued to do so. GPPSS chose to conduct both first-draw* and two-minute flushed** water samples from representative drinking fountains and sinks at each building for copper and lead. This year due to the prolonged closures, we added Legionella to the samplings we have been conducting.

 

Testing Engineers & Consultants, Inc. (TEC) was hired to take these water samples in GPPSS. Water sampling for Legionella was conducted at representative kitchen or food preparation sinks and bottle filling stations. The samples for Legionella analysis were collected after first draw and flushed water samples had been collected for metals analysis (copper and lead). At least two locations were sampled in elementary and middle schools, and four in each high school. Legionella bacteria were not detected in water samples collected from six of the buildings that were tested. For the remaining buildings, results ranged from positive but below detection limit (<1 cfu/ml) to 30 cfu/ml. A total of 32 Legionella samples were collected in the 14 buildings that were tested, with additional samples taken for metals.

 

These are the Steps Already Taken to ensure student safety:

  • Turned off and disconnected every fountain due to COVID
  • Shared these results with principals, staff, families, city managers, and local health care professionals
  • Cleaned and or disinfected kitchen sink fixtures, and replaced filters
  • Bottled water has been delivered for students and staff at schools where the bottle filling stations were disconnected while the district awaits further test results
  • Directed staff to flush all sinks for two (2) minutes prior to using water for consumption or cooking, particularly after breaks/weekends

 

Here are the Next Steps we are working on:

  • Turning off bottle fillers immediately with a detectible result for Legionella bacteria
  • Hyperchlorination of water lines in all locations where detected
  • Once flushing, cleaning and disinfection have been conducted, GPPSS will conduct follow-up testing to evaluate the effectiveness of the steps that were taken.
  • Continue with ongoing water sample schedule
  • Continue district-wide flushing policy, with written protocols to verify locations and schedule

 

Should families have a concern, the district encourages them to contact their family doctor or health care professional to determine next steps for their child. The contact information for the closest Wayne County Health Department clinic that conducts lead testing by appointment is Healthy Communities Hamtramck or you can call Wayne County Environmental Health at 734-727-2216.

 

The district will continue to update our community as we move forward. This is one more component of our overall health and safety plan. We appreciate your continued partnership as together we provide a safe and secure learning environment.

Initial analysis of the two-minute flushed results appears to indicate more of a problem with individual fixtures than a systemic issue. For more information, please read these documents:

Cover Letter from Testing Engineers and Consultants Legionella 2021

TEC GPPSS Legionella full water sample report 2021

Maire (sampling delayed due to abatement work)

GPPSS Copper and Lead Water Sample Report 2021

 

Scott Chandler, CIH, LEED AP Manager, Industrial Hygiene Services of Testing Engineers and Consultants, Inc., the outside company GPPSS contracted with to conduct testing using Paragon Laboratories, stated: “The findings of this initial screening are comparable to what we’re seeing in other schools and buildings that we have tested.”

 

As stated in the imbedded PathCon Laboratories report regarding Legionella on page 49, “To cause disease several factors must occur: the organism must be virulent, it must be in sufficient number to cause disease, the water source must be aerosolized and distributed to the human host, the legionella must be inhaled by the potential host deeply into the lungs, and the human host’s defenses must be unable to stop the infection. … The risk of infection is greater and a lower dose is required in those individuals who are older, smokers, heavy drinkers, immunocompromised with other diseases or on immunosuppressive therapy.”

 

Results are shown in the following tables.

 

Description

No. of samples

No Legionella bacteria detected

18

Legionella bacteria detected but below quantitation limit

5

Legionella bacteria concentrations between 1 cfu/ml and 9 cfu/ml

5

Legionella bacteria concentration of >9 cfu/ml

4

 

Building

Sample Location

Legionella (cfu/ml)

Lead mg/L

Copper mg/L

Administration Building

1st floor; Room 108. Sink

Not Detected

1st <0.0010

F <0.0010

0.0881

0.0183

2nd floor; Room 212. Sink

Not Detected

1st <0.0010

F <0.0010

0.1160

0.0641

Barnes Early Childhood

1st floor; BF station across from Room 101

Not Detected

1st <0.0010

F <0.0010

0.1280

0.0339

1st floor; Room 104, right sink

Not tested

1st <0.0029

F <0.0010

0.1480

0.2080

2nd floor; Staff Lounge; sink

Not Detected

1st <0.0010

F <0.0010

0.1590

0.0573

Brownell Middle School

1st floor kitchen food prep sink, right

Not tested

1st <0.0057

F <0.0010

0.0258

0.0017

1st floor; BF station near B28

Not tested

1st <0.0012

F <0.0010

0.0614

0.0245

1st floor employee lounge sink, closest to window

Not Detected

1st <0.0030

F <0.0010

0.0416

0.0041

2nd floor BF station across from Room A59

30 Legionella pneumophila, not serogroup 1, Legionella species (fluorescent)

1st <0.0010

F <0.0010

0.0813

0.0304

Defer Elementary

1st floor; BF station outside office

Not Detected

1st <0.0010

F <0.0010

0.0745

0.0419

2nd floor; BF station outside staff lounge

Not tested

1st <0.0010

F <0.0010

0.1650

0.0552

3rd floor; BF station outside Room 310

Not Detected

1st <0.0010

F <0.0010

0.2280

0.0601

Ferry Elementary

1st floor; BF station across from Receiving

Not Detected

1st <0.0010

F <0.0010

0.4290

0.1250

1st floor; BF station across from Room 102

Not tested

1st <0.0010

F <0.0010

0.0992

0.0522

1st floor; BF station across from Room 128

Not Detected

1st <0.0010

F <0.0010

0.1580

0.0305

Kerby Elementary

1st floor; BF station outside Room 23

<1 Legionella species (fluorescent)

1st <0.0010

F <0.0010

0.0439

0.0166

1st floor; Faculty lounge sink

30 Legionella species (fluorescent)

1st <0.0012

F <0.0010

0.0462

0.0320

1st floor; BF station across from Room 19

Not tested

1st <0.0010

F <0.0010

0.0455

0.0168

Maire Elementary

1st floor; BF station near girls’ restroom

Not tested

1st <0.0010

F <0.0010

0.115

0.0213

1st floor; right Kitchen sink

<1 Legionella species (fluorescent)

1st <0.0012

F <0.0010

0.104

0.0078

2nd floor; BF station near boys’ bathroom

<1 Legionella species (fluorescent)

1st <0.0010

F <0.0010

0.1020

0.0248

Mason Elementary

1st floor; BF station outside library

Not tested

1st <0.0011

F <0.0015

0.3140

0.2060

1st floor; Kitchen sink

<1 Legionella pneumophila serogroup 1

1st <0.0030

F <0.0010

0.0476

0.0044

2nd floor BF station outside Room 203

<1 Legionella species (fluorescent)

1st <0.0010

F <0.0010

<0.0010

<0.0010

Monteith Elementary

1st floor; BF station across from Room 101

1 Legionella species (fluorescent)

1st 0.0019

F 0.0011

0.0737

0.0196

2nd floor BF station outside Room 202

Not tested

1st <0.0010

F <0.0010

0.1460

0.0591

2nd floor; Faculty lounge sink

Not Detected

1st <0.0010

F <0.0010

0.0297

0.0038

Grosse Pointe North High School

1st floor; BF station outside Room A117

Not tested

1st <0.0010

F <0.0010

0.0783

0.0151

1st floor; Faculty Lounge sink across from Room B133

1 Legionella pneumophila serogroup 1, 1 Legionella species (fluorescent)

1st 0.0027

F <0.0010

0.0816

0.0797

1st floor; BF station outside Room B102

Not tested

1st <0.0010

F 0.0017

0.0615

0.0369

1st floor; Green Room sink

Not Detected

1st <0.0010

F <0.0010

0.0193

0.0135

1st floor; BF station across from Room C107

Not tested

1st 0.0021

F 0.0026

0.3170

0.1500

1st floor; BF station outside Auditorium

Not tested

1st <0.0010

F <0.0010

0.0361

0.0037

2nd floor; BF station outside Room B216

<1 Legionella pneumophila serogroup 1

1st <0.0010

F 0.0014

0.0420

0.0487

3rd floor; BF station outside Room B320

1 Legionella pneumophila serogroup 1

1st <0.0010

F <0.0010

0.0993

0.0265

Parcells Middle School

1st floor; BF station near Room 157 Cafeteria

Not Detected

1st <0.0010

F <0.0010

0.2580

0.0512

1st floor; BF station outside Room 110

Not tested

1st <0.0010

F <0.0010

0.2350

0.0421

2nd floor; BF station outside Room 220

Not Detected

1st <0.0010

F <0.0010

0.1600

0.0537

2nd floor; BF station outside Room 206

Not tested

1st <0.0010

F <0.0010

0.3570

0.0715

Pierce Middle School

1st floor; BF station outside gym

Not Detected

1st <0.0010

F <0.0010

0.2130

0.0816

1st floor; staff lounge, sink

Not tested

1st <0.0010

F <0.0010

0.2370

0.0231

2nd floor; BF station across from Room 201

Not Detected

1st <0.0010

F <0.0010

0.1610

0.0758

Richard Elementary

1st floor; right BF station across from Receiving

1 Legionella species (fluorescent)

1st <0.0010

F <0.0010

0.2800

0.110

1st floor; right Kitchen sink

Not Detected

1st <0.0010

F <0.0010

0.1230

0.0644

2nd floor; left BF station across from Library

Not Detected

1st <0.0010

F <0.0010

0.1190

0.0535

Grosse Pointe South High School

1st floor; BF station across from counseling

Not Detected

1st <0.0010

F <0.0010

0.0939

0.0287

1st floor; BF station across from Room 148

Not tested

1st <0.0010

F <0.0010

0.0270

0.0493

1st floor; BF station adjacent to Room 166

10 Legionella pneumophila serogroup 1

1st <0.0010

F <0.0010

0.0847

0.0416

1st floor; BF station in Band Room

Not tested

1st <0.0010

F <0.0010

0.0606

0.0281

2nd floor; BF station outside Room 229

Not tested

1st <0.0010

F <0.0010

0.0455

0.0275

2nd floor; Cafeteria west food prep sink

Not Detected

1st <0.0010

F <0.0010

0.0795

0.667

2nd floor; Faculty Lounge sink

30 Legionella pneumophila, serogroup 1

1st 0.0042

F <0.0010

0.2690

0.0347

2nd floor; BF station across from Room 248

Not tested

1st <0.0010

F <0.0010

0.0384

0.0174

Trombly Early Childhood

1st floor; Right Kitchen sink

3 Legionella pneumophila, serogroup 6 Legionella species (fluorescent)

1st <0.0010

F <0.0010

0.5350

0.0058

1st floor; BF station across from Room 109

Not tested

1st 0.0034

F 0.0013

0.5030

0.1240

2nd floor; Faculty lounge sink

<1 Legionella pneumophila serogroup 6 Legionella species (fluorescent)

1st <0.0010

F <0.0010

0.4190

0.0700

 

*1st draw refers to collections made as the water source is turned on

**Two-minute flushed samples are taken after water has been timed running at that source for two minutes

The lead and copper chart data is shown in parts per million. Please note many news stories to date have been relayed in parts per billion.