# 35 Ill. Adm. Code 391.405: Section 391.405 Water Treatment Plant Sludge

> Illinois · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_405

## Section

- **Citation:** 35 Ill. Adm. Code 391.405
- **Heading:** Section 391.405 Water Treatment Plant Sludge
- **Jurisdiction:** Illinois
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Illinois Administrative Code / Title 35 ENVIRONMENTAL PROTECTION / CHAPTER II: ENVIRONMENTAL PROTECTION AGENCY / Part 391 DESIGN CRITERIA FOR SLUDGE APPLICATION ON LAND / Section 391.405 Water Treatment Plant Sludge

## Text

Section 391
Section 391.405  Water
Treatment Plant Sludge
a)         Lime sludge shall be applied at rates calculated using soil
type, soil pH, and type of crops grown as determined using APPENDIX E.
b)         Water treatment plant sludge, other than lime sludge, may be
land applied provided the applicant can demonstrate, through field testing on
plots of up to 1 acre in size, that the sludge applied will not have an adverse
impact on the land for agricultural purposes.
c)         Water treatment plant sludge application projects must comply
with Section 391.301; 391.302; 391.402 (a), (b), (c), (d), (f), (h), (j);
391.403; 391.404 (a), (b), (c), (f), (g); and 391.420.

## Nearby sections

- [35 Ill. Adm. Code 391.401 Section 391.401  Introduction](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_401.md)
- [35 Ill. Adm. Code 391.402 Section 391.402  General Criteria](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_402.md)
- [35 Ill. Adm. Code 391.403 Section 391.403  Application Buffer Area](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_403.md)
- [35 Ill. Adm. Code 391.404 Section 391.404  Site Characteristics](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_404.md)
- [35 Ill. Adm. Code 391.405 Section 391.405  Water Treatment Plant Sludge](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_405.md)
- [35 Ill. Adm. Code 391.410 Section 391.410  Nutrient Loading](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_410.md)
- [35 Ill. Adm. Code 391.412 Section 391.412  Phosphorus](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_412.md)
- [35 Ill. Adm. Code 391.413 Section 391.413  Potassium](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_413.md)
- [35 Ill. Adm. Code 391.420 Section 391.420  Heavy Metal Loading](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_420.md)
- [35 Ill. Adm. Code 391.430 Section 391.430  Site Monitoring](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_430.md)
- [35 Ill. Adm. Code 391.440 Section 391.440  Additional Precautions](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_440.md)
- [35 Ill. Adm. Code 391.450 Section 391.450  Land Reclamation Projects](https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_450.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/STATE_IL_IAC_T35_P391_S391_405. Check the current official text before relying on it. Not legal advice.