Grahamstown Water Treatment Plant (Hunter Water)

Testing started once a month in Raw West Main from January 4 2016, and increased to once a week in mid 2017.

Testing started once a month in Raw Water East Main from May 2018.

Testing started weekly in Clearwater Tank from March 2018.

Grahamstown Water Treatment Plant – PFOS

PFOS Detections (Australian Guideline Level 0.07ug/L

March 2017: Grahamstown Water Treatment Plant 0.006ug/L

June 2017: Grahamstown Water Treatment Plant 0.004ug/L

July 2017: Grahamstown Water Treatment Plant 0.004ug/L

September 2017: Grahamstown Water Treatment Plant 0.008ug/L

October 2017: Grahamstown Water Treatment Plant 0.005ug/L

November 2017: Grahamstown Water Treatment Plant 0.003ug/L

December 2017: Grahamstown Water Treatment Plant 0.004ug/L

January 2018: Grahamstown Water Treatment Plant 0.002ug/L

Source: Hunter Water Monthly Water Quality Reports

 Grahamstown Clearwater Tank (CWT)

April 2 2018: (CWT) PFOS 0.002ug/L

September 10 2018: (CWT) PFOS 0.002ug/L

December 3 2018: (CWT) PFOS 0.003ug/L

February 19 2019:  (CWT) PFOS 0.005ug/L

September 9 2019: (CWT) PFHxS 0.002ug/L

September 16 2019: (CWT) PFHxS 0.002ug/L

October 28 2019: (CWT) PFHxS 0.004ug/L

January 6 2020: (CWT) PFOS 0.002ug/L, PFHxS 0.002ug/L

January 13 2020: (CWT) PFHxS 0.002ug/L

January 20 2020: (CWT) PFOS 0.002ug/L, PFHxS 0.003ug/L. 

February 17 2020; (CWT) PFHxS 0.002ug/L

June 1 2020: (CWT) PFHxS 0.002ug/L

July 13 2020: (CWT) PFOS 0.003ug/L

August 17 2020: (CWT) PFOS 0.002ug/L

March 16 2021: (CWT) PFOS 0.003ug/L

April 12 2021: (CWT) PFOS 0.002ug/L

April 19 2022: (CWT) PFOS 0.002ug/L, PFHxS 0.002ug/L

August 1 2022: (CWT) PFHxS 0.003ug/L

August 23 2022: (CWT) PFOS 0.002ug/L, PFHxS 0.003ug/L

September 6 2022: (CWT) PFHxS 0.004ug/L

March 6 2023: (CWT) PFOS 0.004ug/L

March 13 2023: (CWT) PFOS 0.002ug/L, PFHxS 0.002ug/L

March 20 2023: (CWT) PFHxS 0.002ug/L

2017/18 – Grahamstown Water Treatment Plant (New South Wales) – PFOS

Grahamstown Water Treatment Plant (Hunter Water)

Testing started once a month in Raw West Main from January 4 2016, and increased to once a week in mid 2017.

Testing started once a month in Raw Water East Main from May 2018.

Testing started weekly in Clearwater Tank from March 2018.

Grahamstown Water Treatment Plant – PFOS

PFOS Detections (Australian Guideline Level 0.07ug/L

March 2017: Grahamstown Water Treatment Plant 0.006ug/L

June 2017: Grahamstown Water Treatment Plant 0.004ug/L

July 2017: Grahamstown Water Treatment Plant 0.004ug/L

September 2017: Grahamstown Water Treatment Plant 0.008ug/L

October 2017: Grahamstown Water Treatment Plant 0.005ug/L

November 2017: Grahamstown Water Treatment Plant 0.003ug/L

December 2017: Grahamstown Water Treatment Plant 0.004ug/L

January 2018: Grahamstown Water Treatment Plant 0.002ug/L

Source: Hunter Water Monthly Water Quality Reports

 Grahamstown Clearwater Tank (CWT)

April 2 2018: (CWT) PFOS 0.002ug/L

September 10 2018: (CWT) PFOS 0.002ug/L

December 3 2018: (CWT) PFOS 0.003ug/L

February 19 2019:  (CWT) PFOS 0.005ug/L

September 9 2019: (CWT) PFHxS 0.002ug/L

September 16 2019: (CWT) PFHxS 0.002ug/L

October 28 2019: (CWT) PFHxS 0.004ug/L

January 6 2020: (CWT) PFOS 0.002ug/L, PFHxS 0.002ug/L

January 13 2020: (CWT) PFHxS 0.002ug/L

January 20 2020: (CWT) PFOS 0.002ug/L, PFHxS 0.003ug/L.

February 17 2020; (CWT) PFHxS 0.002ug/L

June 1 2020: (CWT) PFHxS 0.002ug/L

July 13 2020: (CWT) PFOS 0.003ug/L

August 17 2020: (CWT) PFOS 0.002ug/L

March 16 2021: (CWT) PFOS 0.003ug/L

April 12 2021: (CWT) PFOS 0.002ug/L

April 19 2022: (CWT) PFOS 0.002ug/L, PFHxS 0.002ug/L

August 1 2022: (CWT) PFHxS 0.003ug/L

August 23 2022: (CWT) PFOS 0.002ug/L, PFHxS 0.003ug/L

September 6 2022: (CWT) PFHxS 0.004ug/L

March 6 2023: (CWT) PFOS 0.004ug/L

March 13 2023: (CWT) PFOS 0.002ug/L, PFHxS 0.002ug/L

March 20 2023: (CWT) PFHxS 0.002ug/L