<html xmlns:v="urn:schemas-microsoft-com:vml" xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:w="urn:schemas-microsoft-com:office:word" xmlns:m="http://schemas.microsoft.com/office/2004/12/omml" xmlns="http://www.w3.org/TR/REC-html40"><head><meta http-equiv=Content-Type content="text/html; charset=utf-8"><meta name=Generator content="Microsoft Word 15 (filtered medium)"><style><!--
/* Font Definitions */
@font-face
{font-family:"Cambria Math";
panose-1:2 4 5 3 5 4 6 3 2 4;}
@font-face
{font-family:Calibri;
panose-1:2 15 5 2 2 2 4 3 2 4;}
/* Style Definitions */
p.MsoNormal, li.MsoNormal, div.MsoNormal
{margin:0cm;
font-size:11.0pt;
font-family:"Calibri",sans-serif;}
a:link, span.MsoHyperlink
{mso-style-priority:99;
color:blue;
text-decoration:underline;}
span.EmailStyle18
{mso-style-type:personal-reply;
font-family:"Calibri",sans-serif;
color:windowtext;}
.MsoChpDefault
{mso-style-type:export-only;
font-family:"Calibri",sans-serif;
mso-fareast-language:EN-US;}
@page WordSection1
{size:612.0pt 792.0pt;
margin:72.0pt 72.0pt 72.0pt 72.0pt;}
div.WordSection1
{page:WordSection1;}
--></style><!--[if gte mso 9]><xml>
<o:shapedefaults v:ext="edit" spidmax="1026" />
</xml><![endif]--><!--[if gte mso 9]><xml>
<o:shapelayout v:ext="edit">
<o:idmap v:ext="edit" data="1" />
</o:shapelayout></xml><![endif]--></head><body lang=EN-GB link=blue vlink=purple style='word-wrap:break-word'><div class=WordSection1><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Wastewater is the norm in the UK to cover all waste types.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Greywater is typically from baths/sinks/washing machines and in some localities is used extensively for irrigation.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Blackwater (what we generally call sewage) includes toilets etc.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>At the outfall point or points there will often be a diffuser(s), especially on newer outfalls. Most outfalls will have some means of stopping backflow somewhere along their length. For older short outfalls this may be on the end as a flap valve.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>I’ve been involved with a fair few long sea outfalls around the UK and elsewhere in my time so could help add a few where I know their location.<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Cheers<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'>Andy<o:p></o:p></span></p><p class=MsoNormal><span style='mso-fareast-language:EN-US'><o:p> </o:p></span></p><div style='border:none;border-top:solid #E1E1E1 1.0pt;padding:3.0pt 0cm 0cm 0cm'><p class=MsoNormal><b><span lang=EN-US>From:</span></b><span lang=EN-US> SK53 <sk53.osm@gmail.com> <br><b>Sent:</b> 27 October 2021 09:13<br><b>To:</b> talk-gb@openstreetmap.org<br><b>Subject:</b> [Talk-GB] Sewage Outfalls<o:p></o:p></span></p></div><p class=MsoNormal><o:p> </o:p></p><div><div><p class=MsoNormal>As sewage outfalls are in the news at present it might be a good opportunity to map some of them, particularly those close to popular bathing beaches.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Tagging is still a little unsettled, but the following seems reasonable:<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>* The outfall pipe mapped as man_made=pipeline, substance=sewage (some existing pipes are mapped as man_made=outfall). There doesn't seem to be a consensus tag for "grey water", both waterwaste and wastewater having roughly equal usage. Overpass query showing current objects tagged with substance=sewage:<a href="https://overpass-turbo.eu/s/1cqG"> https://overpass-turbo.eu/s/1cqG</a><o:p></o:p></p></div><div><p class=MsoNormal>* The end of the pipe mapped either as <a href="https://wiki.openstreetmap.org/wiki/Tag:man_made%3Doutfall">man_made=outfall</a> or with the new <a href="https://wiki.openstreetmap.org/wiki/Proposed_features/Outlets_proposal">outlet key</a> which is currently under discussion.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>I'm open to other suggestions, and any other ideas for locating the outfalls.<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal>Jerry<o:p></o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div><div><p class=MsoNormal><o:p> </o:p></p></div></div></div></body></html>