AWWA WQTC50445

As required by the Lead and Copper Rule (LCR), Idyllwild Water District (IWD) and Pine Cove Water District (PCWD) conducted a sampling and testing program in 1993 and 1994. The program began with an evaluation of local household plumbing to identify 20 sites in each district which would be most likely candidates for internal corrosion activity. Once identified, customers were asked to take "first draw" samples from their internal plumbing and submit the samples to the water districts. The samples were then tested to determine the concentration of lead and copper in the drawn water. The sampling and testing program found that water used at the identified test sites exceeded the action level for lead and copper at the 90th percentile. Because of the absence of lead or copper in the source water, lead or copper found in the tests resulted from internal corrosion in household plumbing or fixtures. PCWD only took one round of LCR samples because it became obvious corrosion control treatment would be needed. In compliance with the LCR, IWD initiated a pilot corrosion control program utilizing an ortho/polyphosphate corrosion inhibitor. Because of the similarity of water in the two Districts, the State of California allowed PCWD to defer action until results of the IWD pilot program were known. Includes 9 references, tables, figures.

Product Details

Edition:

Vol. - No.

Published:

01/01/1999

File Size:

1 file , 330 KB