[Lex Computer & Tech Group/LCTG] COVID levels in wastewater

[Carl Lazarus]

In Newton there are separate systems for sewage and storm water.  It’s very
separate where I live, though I can’t certify this for the whole city.

On Sun, Jan 15, 2023 at 5:13 PM Ted Kochanski <tedpkphd at gmail.com> wrote:

> Michael,
>
> On my street in Lexington -- there is one and one only sewer main it
> connects to houses as well as to the drains on the edges of the street
> Separation of sewer lines doesn't happen in most places
>
> Ted
>
> On Sun, Jan 15, 2023 at 3:03 PM Michael Alexander <mna.ma at yahoo.com>
> wrote:
>
>> I’d assume that “waste water” is water in/from *sanitary sewers* –
>> hence, not mixed with *storm sewer* water (no longer, at least).
>>
>>     – Mike Alexander
>>
>>
>>
>> On Sunday, January 15, 2023, 2:44 PM, Ted Kochanski <tedpkphd at gmail.com>
>> wrote:
>>
>> John,
>>
>> There is a big problem with this data being compared over long periods of
>> time
>> Some of the waste water includes surface run-off and some mostly doesn't
>> hence, since the y axis is a concentration of virus in the water -- if
>> the amount of "active water" from households is diluted by surface run-off
>> because of recent rain or even more complicating melting snow mixed with
>> recent rain -- how can you tell?
>>
>> I suggest that the data suggests that last year there was a real spike
>> and that recently there is just "noise" in the system
>>
>> Ted
>>
>>
>> On Fri, Jan 13, 2023 at 8:17 PM <jjrudy1 at comcast.net> wrote:
>>
>> Don’t worry about the y-axis, just the shape of the curve.  The article
>> gave no indication as to what is “good”.  In the later graph look at the
>> winter spikes.  The big problem was a year ago.
>>
>>
>>
>>
>>
>>
>>
>> John Rudy
>>
>>
>>
>> 781-861-0402
>>
>> 781-718-8334  cell
>>
>> 13 Hawthorne Lane
>> <https://www.google.com/maps/search/13+Hawthorne+Lane+Bedford+MA?entry=gmail&source=g>
>>
>> Bedford MA
>> <https://www.google.com/maps/search/13+Hawthorne+Lane+Bedford+MA?entry=gmail&source=g>
>>
>> jjrudy1 at comcast.net
>>
>>
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