# 40 C.F.R. § 147.753 (2026): Existing Class I and III wells authorized by rule

> Federal · Regulations · In force

URL: https://www.frixlaw.com/law-library/statutes/CFR_T40_P147_S147_753

## Section

- **Citation:** 40 C.F.R. § 147.753 (2026)
- **Heading:** Existing Class I and III wells authorized by rule
- **Jurisdiction:** Federal
- **Kind:** Regulations
- **Status:** In force
- **Text as of:** August 14, 2026
- **Source:** Compiled text
- **Location:** Title 40 CFR: Protection of Environment / Chapter I / Part 147 / Subpart P / § 147.753: § 147.753   Existing Class I and III wells authorized by rule.

## Text

Maximum injection pressure. The owner or operator shall limit injection pressure to the lessor of: (a) A value which will not exceed the operating requirements of § 144.28(f)(3) (i) or (ii) as applicable; or (b) A value for well head pressure calculated by using the following formula: Pm = (0.800-0.433 Sg)d where: Pm = injection pressure at the wellhead in pounds per square inch Sg = specific gravity of injected fluid (unitless) d = injection depth in feet. [49 FR 20197, May 11, 1984, as amended at 56 FR 41072, Aug. 19, 1991]

## Nearby sections

- [40 C.F.R. § 147.750 (2026) § 147.750   State-administered program—Class II wells.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P147_S147_750.md)
- [40 C.F.R. § 147.751 (2026) § 147.751   EPA-administered program.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P147_S147_751.md)
- [40 C.F.R. § 147.753 (2026) § 147.753   Existing Class I and III wells authorized by rule.](https://www.frixlaw.com/law-library/statutes/CFR_T40_P147_S147_753.md)

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Source: Frix Law Library, https://www.frixlaw.com/law-library/statutes/CFR_T40_P147_S147_753. Check the current official text before relying on it. Not legal advice.