Figure 4 presents the geographical distribution of the modeled SW needs. Some of these jurisdictions' SW needs are reflected in the total documented needs. However, this total does not cover the entire SW needs because, in other jurisdictions, they are not documented. Accordingly, EPA has developed a national model of SW needs to provide a more complete estimate. Table A-5 in Appendix A provides a detailed presentation of NPS needs, by category, for each State and U.S. territory.
Many small communities lack the resources to adequately document their existing needs.
Accordingly, beginning with the 1992 CWNS, EPA has made a special effort to obtain a better representation of the needs of small communities. Figure 6 depicts the total documented needs for small communities, by category, comparing them with the needs of larger communities. In four categories, the small community needs are a higher proportion of the overall need. New sewers and secondary treatment in small communities are relatively more important than the other categories when compared to overall needs. Figure 7 shows how small community needs are distributed geographically.