Editing Philadelphia (section)

====Water purity and availability====
{{Further|Philadelphia Water Department}}
[[File:Fairmount Water Works LOC 314409cu.jpg|thumb|[[Fairmount Water Works]], Philadelphia's second municipal waterworks, in December 1984]]
In 1815, Philadelphia began sourcing its water via the [[Fairmount Water Works]] on the [[Schuylkill River]], the nation's first major urban water supply system. In 1909, the Water Works was decommissioned as the city transitioned to modern [[Sand filter|sand filtration]] methods.<ref>{{cite web |url=http://fairmountworks.com/our-story/ |title=Fairmount Water Works: Our Story |publisher=Fairmount Water Works |access-date=April 24, 2015 }}</ref> [[Philadelphia Water Department]] (PWD) provides [[drinking water]], [[wastewater]] collection, and [[stormwater]] services for Philadelphia, as well as surrounding counties. PWD draws about 57 percent of its drinking water from the [[Delaware River]] and the balance from the Schuylkill River.<ref name="PWD">{{cite web |url=http://www.phila.gov/water/aboutus/Pages/AboutPhiladelphiaWater.aspx |title=About Philadelphia Water |publisher=City of Philadelphia |access-date=April 24, 2015 }}</ref> The city has two filtration plants on the Schuylkill River and one on the Delaware River. The three plants can treat up to 546&nbsp;million gallons of water per day, while the total storage capacity of the combined plant and distribution system exceeds one billion gallons. The wastewater system consists of three water pollution control plants, 21 pumping stations, and about {{convert|3657|mi|km}} of sewers.<ref name="PWD"/>