Minnesota Statewide Rule

Minnesota Statewide Industrial Noise Standards (MPCA)

Some RestrictionsApplies statewide across Minnesota (2026)

Minnesota Pollution Control Agency sets statewide numerical noise limits for stationary sources under Minn. Rules Chapter 7030. Limits vary by Noise Area Classification and time of day, applying uniformly across the state to industrial and commercial noise.

Key Facts

Statute authority: Minn. Stat. 116.07
Rule citation: Minn. Rules 7030.0040
NAC-1 day limit: 60 dBA L50
NAC-1 night limit: 50 dBA L50
Penalty cap: $10,000 per day

Source: Minnesota Revisor of Statutes

Full Breakdown

Minn. Stat. section 116.07 authorizes MPCA to adopt noise standards. Minn. Rules 7030.0040 sets daytime and nighttime decibel limits using L10 and L50 metrics across three Noise Area Classifications based on land use. For example, NAC-1 residential limits are 60 dBA (L50) day and 50 dBA (L50) night. The standards apply to stationary sources such as factories, compressors, and HVAC. Local noise ordinances may be more restrictive, but the state floor applies statewide. Aircraft, motor vehicles on public roads, and certain agricultural operations are excluded.

Violations & Penalties

MPCA enforcement may include administrative penalty orders, civil penalties up to $10,000 per day under Minn. Stat. 115.071, and injunctive relief.

Frequently Asked Questions

Do Minnesota's MPCA noise rules apply statewide?

Yes. The numerical limits in Minn. Rules 7030.0040 apply throughout Minnesota to stationary noise sources, regardless of city. Local rules may be stricter but not weaker.

What sources are exempt from Minnesota noise standards?

Aircraft, motor vehicles on public highways, snowmobiles, and certain agricultural and emergency activities are not subject to the MPCA's Chapter 7030 noise limits.

Sources

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