The cost of achieving financial efficiency for Flint (click here)
The Michigan Department of Environment, (click here) Great Lakes, and Energy (EGLE) today announced that the City of Flint’s water system successfully maintained compliance with the state’s Lead and Copper Rule (LCR) during the past year’s multimillion-dollar project to modernize the city’s drinking water system. Flint is now in its sixth year of meeting strict state and federal standards for lead in drinking water.
Since July 2016, the city of Flint’s water system has tested below action levels (LCR) during 12 consecutive monitoring periods. The latest six-month monitoring period from January 1 through June 30, 2022, shows that the 90th percentile calculation for the samples collected is at 10 parts per billion (ppb) for lead under the stricter state rule that requires a fifth liter sample to better reflect the impact of lead service lines.
The 90th percentile calculation of 10 ppb means 90 percent of the test results used in the calculation came in at or below 10 ppb.
The latest testing result is higher than the previous 6-month period result, but still below the federal action level of 15 ppb. The change is attributed to the increase in non-residential (Tier 2) sites being added to the city’s sampling pool as the vast majority of residential (Tier 1) sites have had their lead service lines replaced and no longer meet the criteria for inclusion in the 90th percentile calculation....
The Michigan Department of Environment, (click here) Great Lakes, and Energy (EGLE) today announced that the City of Flint’s water system successfully maintained compliance with the state’s Lead and Copper Rule (LCR) during the past year’s multimillion-dollar project to modernize the city’s drinking water system. Flint is now in its sixth year of meeting strict state and federal standards for lead in drinking water.
Since July 2016, the city of Flint’s water system has tested below action levels (LCR) during 12 consecutive monitoring periods. The latest six-month monitoring period from January 1 through June 30, 2022, shows that the 90th percentile calculation for the samples collected is at 10 parts per billion (ppb) for lead under the stricter state rule that requires a fifth liter sample to better reflect the impact of lead service lines.
The 90th percentile calculation of 10 ppb means 90 percent of the test results used in the calculation came in at or below 10 ppb.
The latest testing result is higher than the previous 6-month period result, but still below the federal action level of 15 ppb. The change is attributed to the increase in non-residential (Tier 2) sites being added to the city’s sampling pool as the vast majority of residential (Tier 1) sites have had their lead service lines replaced and no longer meet the criteria for inclusion in the 90th percentile calculation....
LEAD AND COPPER RULE TIER SCHEDULE (141.86)
...Tier 2: All types of buildings, (click here) including multiple family structures that have any of the following:
Copper w/lead solder (CLS) constructed after 1982 ( constructed between 1983-1988)*;
ead pipes including lead goosenecks or pigtails (LP);
or lead service lines (LSL).
Only after a PWS has exhausted Tier 1 and Tier 2 sites may it complete its sampling pool with Tier 3
sites....
