---
kind: "section"
citation: "40 C.F.R. § 503.15"
title: "40"
number: "503.15"
heading: "Operational standards—pathogens and vector attraction reduction."
url: "https://uscodex.org/cfr/40/503.15"
---

# §503.15. Operational standards—pathogens and vector attraction reduction.

- (a) **Pathogens—sewage sludge.**
  - (1) The Class A pathogen requirements in [§ 503.32(a)](/cfr/40/503.32.md?p=a) or the Class B pathogen requirements and site restrictions in [§ 503.32(b)](/cfr/40/503.32.md?p=b) shall be met when bulk sewage sludge is applied to agricultural land, forest, a public contact site, or a reclamation site.
  - (2) The Class A pathogen requirements in [§ 503.32(a)](/cfr/40/503.32.md?p=a) shall be met when bulk sewage sludge is applied to a lawn or a home garden.
  - (3) The Class A pathogen requirements in [§ 503.32(a)](/cfr/40/503.32.md?p=a) shall be met when sewage sludge is sold or given away in a bag or other container for application to the land.
- (b) **Pathogens—domestic septage.** The requirements in either § [503.32 (c)(1)](/cfr/40/503.32.md?p=c-1) or [(c)(2)](/cfr/40/503.32.md?p=c-2) shall be met when domestic septage is applied to agricultural land, forest, or a reclamation site.
- (c) **Vector attraction reduction—sewage sludge.**
  - (1) One of the vector attraction reduction requirements in [§ 503.33 (b)(1) through (b)(10)](/cfr/40/503.33.md?p=b-1..b-10) shall be met when bulk sewage sludge is applied to agricultural land, forest, a public contact site, or a reclamation site.
  - (2) One of the vector attraction reduction requirements in [§ 503.33 (b)(1) through (b)(8)](/cfr/40/503.33.md?p=b-1..b-8) shall be met when bulk sewage sludge is applied to a lawn or a home garden.
  - (3) One of the vector attraction reduction requirements in [§ 503.33 (b)(1) through (b)(8)](/cfr/40/503.33.md?p=b-1..b-8) shall be met when sewage sludge is sold or given away in a bag or other container for application to the land.
- (d) **Vector attraction reduction—domestic septage.** The vector attraction reduction requirements in § [503.33(b)(9)](/cfr/40/503.33.md?p=b-9), [(b)(10)](/cfr/40/503.33.md?p=b-10), or [(b)(12)](/cfr/40/503.33.md?p=b-12) shall be met when domestic septage is applied to agricultural land, forest, or a reclamation site.

## Notes

### Authority

Authority: Sections 405 (d) and (e) of the Clean Water Act, as amended by Pub. L. 95-217, sec. 54(d), 91 Stat. 1591 (33 U.S.C. 1345 (d) and (e)); and Pub. L. 100-4, title IV, sec. 406 (a), (b), 101 Stat., 71, 72 (33 U.S.C. 1251 et seq. ).

### Source

Source: 58 FR 9387, Feb. 19, 1993, unless otherwise noted.