Water Distribution System Classifications*
System Type | Grade** | |||
Average Daily Pumpage in MGD | ||||
0-0.1 | >0.1-1.5 | >1.5-5 | >5 | |
All municipal water systems | I | II | III | IV |
Community water systems not classified as a Grade A water system | I | II | III | IV |
Nontransient noncommunity water systems not classified as a Grade A water system | I | II | III | IV |
Transient noncommunity water systems not classified as a Grade A water system | I | II | III | IV |
Miles of Pipe | ||||
0-100 | >100-1,000 | >1,000-2,500 | >2,500 | |
Rural water districts | II | II | III | IV |
*Note: A public water system with a well, storage, and a distribution system shall be classified as a water distribution system if no treatment is provided.
**For Grade A water system classification, see subrule 81.6(1).
Iowa Admin. Code r. 567-81.5