The Biden administration has announced a proposal to “strengthen its Lead and Copper Rule that would require water systems to replace lead service lines within 10 years,” the White House said in a statement on Thursday.
According to the White House, more than 9.2 million American households connect to water through lead pipes and lead service lines and, due to “decades of inequitable infrastructure development and underinvestment,” many Americans are at risk of lead exposure.
“There is no safe level of exposure to lead, particularly for children, and eliminating lead exposure from the air, water, and homes is a crucial component of the Biden-Harris Administration’s historic commitment to advancing environmental justice,” the Biden administration said.
These are service lines, as in assuming all the mains are already lead-free, these are the feeds onto each house. Many of them owned by the homeowner, not the utility. An estimated 9 million of which are lead.
When’s the last time leaded pipes were allowed? Surely at least half a century ago. I find it hard to believe there are good records that old, for every house, many of which lines are not even owned by the utility.
I’m picturing something much more exhaustive, like:
I have no way of knowing what records the water utility has but my house is almost 80 years old and the town’s property records are awfully spotty. And I’m in one of the newer houses in my town - my search included some back to 1890
Edit: 1986. Leaded pipes were allowed that recently, wtf. ( and Florida is number one in leaded pipes remaining: that explains a lot)
You don’t need to do that though. Unless there are records otherwise you can just assume it is lead because they all are. Bring in a underground crew to the neighborhood and they can go house to house replacing service lines. Transporting equipment to one house for this is often more expensive than the work itself, but since they are doing an entire neighborhood they can do 10 houses in a day and the cost isn’t too much. Just dig the pipe into wherever, then go inside and hook it up.
Of course many houses have lead pipes as well. That is a lot more money. I’m working on getting the lead out of my house (copper pipes, but old enough to assume they have lead solder), but there are a lot of pipes in the walls that I don’t really have an easy way to get at without a major remodel. (I have a RO drinking water system to every sink so the lead pipes are mostly used for hand washing not drinking)
I think they were banned that year but basically nobody installed them after the late 70s.
But yeah some places are dabbling with machine learning or algorithmic data set collection. Most are just using what historic records they have and doing shovel tests for the rest.