Meth Lab Cleanup: State Limits, Testing and Who May Clean

Meth lab cleanup limits, state by state

Each figure is the methamphetamine surface limit in micrograms per 100 square centimetres, read in the document linked in the same row. Where the current text would not open, the row says so rather than repeat a number from a secondary list. EPA reports that as of August 2021, 21 states had a quantitative meth standard and 11 had process-only guidance, per its EPA guidelines PDF.

State	Limit (µg/100 cm²)	Where it is written	Scope
Washington	1.5	WAC 246-205-541, effective 9 January 2015	Manufacture or storage sites
Montana	1.5	MCA 75-10-1303(1); DEQ may set another by rule	Labs and consumption
California	1.5	AB 1489 floor analysis (2009) raised the interim 0.1 in Health and Safety Code 25400.16	Health based, per the analysis
Utah	1.0	Utah R392-600-6 Table 1, amended 13 July 2022	Ecstasy 0.1 in same table
Colorado	0.5; 1.5 painted-over; 4 limited exposure	6 CCR 1014-3 section 7.1, version of 27 April 2021	Manufacture, use, storage
Tennessee	0.1	Tenn. Rule 0400-15-02-.01, effective 23 May 2012	Quarantined manufacturing sites
Kentucky	0.1	401 KAR 101:040 section 11	Tiered by production
Connecticut	0.1	Connecticut DPH guidelines, July 2006, detection limit as target	Guidance
Hawaii	0.1	Hawaii DOH fact sheet, undated	Fact sheet
Oregon	Not confirmed	Licensing and disclosure rules read; numeric value is in Division guidelines we could not open	NIOSH 2008: 0.5 per sq ft
Arizona	Not confirmed	Arizona Laws 2016, chapter 167 moved firm licensing to the Registrar of Contractors; R4-30 text not reachable	NIOSH 2008: 0.1
Minnesota	None found	Minnesota Department of Health keeps no guidance of its own and points to EPA’s	NIOSH 2008: 0.1 labs
Illinois	None found	Illinois Department of Public Health gives process guidance only	Points to EPA
Kansas, New Mexico, Ohio, Virginia, Wisconsin	Not checked	Marked in EPA Appendix D as referencing EPA guidance	Check the agency
AK, AR, FL, GA, ID, IN, IA, LA, MI, NE, OK, WV	Not checked	EPA Appendix D lists a state resource; not opened for this page	Check the agency
North Carolina, South Dakota	Not checked	Absent from EPA Appendix D	NIOSH 2008: 0.1
AL, DE, ME, MD, MA, MS, MO, NV, NH, NJ, NY, ND, PA, RI, SC, TX, VT, WY	None found	Absent from EPA’s 2021 Appendix D; NIOSH listed each as no standard in 2008	Local codes may apply

The spread is fifteen-fold: a wipe reading 1.2 passes in Washington and fails in Tennessee. The low values are inherited from laboratory capability. Utah DHHS says the 2008 value of 0.1 was the detection limit of the day, and Utah moved to 1.0 after adapting Colorado’s exposure model. EPA agrees that most state standards rest on detection limits and feasibility, not health.

What you are looking at: lab, use or storage site

Meth contamination cleanup starts with classification, because the rule that applies depends on what happened in the building. Residue is usually invisible: a clean-looking wall can fail and a stained one can pass. EPA notes that iodine and red phosphorus leave visible stains, and stained surfaces are generally removed rather than sampled.

Situation	How the rules treat it	Source
Former lab reported by police	Listed or quarantined until cleared	Tenn. Rule 0400-15-02-.01; 401 KAR 101:040; WAC 246-205-541
Smoking or use only	Colorado’s definition includes ‘used’; Montana covers consumption	6 CCR 1014-3; MCA 75-10-1305
Chemical or product storage	Washington covers storage sites	WAC 246-205-010
Owner finds residue, no police report	Montana ‘volunteer property’ route to a Certificate of Fitness	Montana DEQ

Why third-hand smoking residue is regulated differently

EPA states that smoking meth alone can contaminate a structure, with levels depending on how much was smoked, and that its guidelines may be useful for use sites although written for labs. The regulatory difference is scope. A manufacturing site carries the chemical load of production, so rules add tests for volatile organic compounds, corrosives, lead and mercury. A use-only site is a residue question. Colorado builds this in: limited composite screening, where any composite above 0.2 µg/100 cm² triggers the full assessment, per 6 CCR 1014-3 section 3.6. Washington defines its subject as manufacturing or storage sites, so a use-only house may sit outside its listing process.

How the limits moved since 2008

NIOSH printed a state table in Method 9111, dated January 2008. Against today’s rule text, the states that rewrote their rules moved up. Montana’s 2008 figure was per square foot, about 0.054 per 100 cm² once one square foot is taken as 929 cm².

State	NIOSH, Jan 2008	Rule text today	Change
Washington	<0.1	1.5	Raised, 2015
Utah	0.1	1.0	Raised
Montana	0.5 per sq ft	1.5	Raised, unit changed
California	<1.5	1.5	Codified 2009
Colorado	0.5	0.5 plus two tiers	Tiers added
Minnesota	0.1 labs, <1.5 use	No state guidance	Defers to EPA
Tennessee	0.1	0.1	Unchanged
Kentucky	0.1	0.1	Unchanged

What EPA’s Voluntary Guidelines actually say

The federal document is the EPA Voluntary Guidelines for Methamphetamine and Fentanyl Laboratory Cleanup, revised edition August 2021, EPA-540-B-21-002, required by the Methamphetamine Remediation Research Act of 2007. EPA says it was first published in 2009, updated in 2013 and revised in 2021 to add fentanyl. The Minnesota Department of Health page mentions a June 2023 update, but EPA’s page lists none and the PDF still carries the 2021 cover.

It is voluntary; EPA says it does not set or promote quantitative standards. It records the state range as 0.05 to 1.5 µg/100 cm², with 0.1 most common. It reports lab seizures falling from 23,703 in 2004 to 891 in 2019, which EPA says makes its use-site guidance especially relevant. On fentanyl, EPA says no state or federal remediation standard exists; Montana DEQ reports amended rules adding one took effect on 8 August 2026.

Meth residue testing: wipe sampling by NIOSH 9111

NIOSH Method 9111, Issue 1 of 17 October 2011, measures methamphetamine on wipes by liquid chromatography and mass spectrometry. Colorado accepts it alongside NIOSH 9106, 9109 and EPA 8270D, per 6 CCR 1014-3 section 6.12. Kentucky names EPA 8270C modified with a detection limit of at least 0.1, per 401 KAR 101:040 section 10.

Parameter	What the method or rule says	Why it matters
Area	100 cm² template (10 by 10 cm), per NIOSH 9111	Results are per 100 cm²
Wipe and solvent	Gauze with 3 to 4 mL methanol or isopropanol	Solvent changes recovery
Pattern	Vertical S-strokes, fold, horizontal, fold, vertical	Makes before and after comparable
Blanks	At least two field blanks, one per ten samples	Proves clean handling
Storage	7 days at 22 °C, 30 days below 6 °C	Ship cold
Range	About 0.1 to 100 µg per sample	A 0.1 limit sits at the method floor
Coverage	Colorado 800 cm² per property and 400 cm² of HVAC; Montana 6 samples, 3 from HVAC	6 CCR 1014-3 6.9; MCA 75-10-1303(2)(b)

A pass taken with water and a fail taken with methanol can describe the same wall, which is why rules fix the method and why OAR 333-040-0070 requires post-cleaning samples next to the original spots by identical methods. Home kits screen; state release needs laboratory results.

Meth house remediation, step by step

The sequence is EPA’s, compressed, with why each step differs from ordinary cleaning. Stricter state rules govern: Colorado holds painted-over surfaces to 1.5 and, once they pass, requires them to be encapsulated, per 6 CCR 1014-3 section 7.1.2.

Step	What EPA says	Why this differs from generic advice
1. Secure, ventilate 24 hours or more	EPA minimum before work	Air first, cleaning second
2. Assess and pre-sample	Biased samples at likely worst spots	Hunts the maximum, not the average
3. Remove what will be discarded	Upholstered furniture, most mattresses, paper and books	Removal before washing avoids recontamination
4. HEPA vacuum	EPA section 3.10	Dry dust out before water
5. Clean and seal HVAC	No chemicals in ducts; run it before post-sampling	Restart dust can fail a clearance
6. Detergent wash, ceiling to floor, back to front	All-purpose cleaner; hot water not proven better	Seal each finished room
7. No bleach or methanol	EPA says bleach should not be used	Generic advice reaches for bleach
8. Post-sample when dry	Adjacent to original locations	The lab result ends the job
9. Encapsulate only after passing	Oil-based paint, polyurethane or epoxy	Paint never replaces cleaning

EPA says to sample a sprayed popcorn ceiling for meth and, if clean, leave or encapsulate it because of possible asbestos; see popcorn ceiling asbestos, and get an asbestos survey before removing walls or floors. HEPA negative air is explained on our air scrubber page.

Who may do the work: certification by state

OSHA’s hazardous waste standard, 29 CFR 1910.120, is the training baseline the Colorado, Montana and Oregon rules reference. The Minnesota Department of Health says it does not license meth cleanup firms.

State	Who samples	Who cleans	Source
Colorado	Certified Consultant	Certified Decontamination Supervisor and Workers	6 CCR 1014-3
Montana	DEQ-certified contractor	Same; 16-hour course or 8-hour refresher plus HAZWOPER	Montana DEQ
Tennessee	Certified CML Specialist	Authorized contractor; a CIH may do both	TDEC
Oregon	Independent samplers, supervised	Licensed contractor registered with the CCB; 40 hours hazmat for supervisors	OAR 333-040-0110
Washington	Certified CDL supervisor or health officer	Certified workers and authorized contractors	WAC 246-205
Kentucky	Certified contractor	Certified contractor	Kentucky EEC
Utah	Certified decontamination specialist	Specialist or owner of record	Utah R392-600-6

Disclosure laws for sellers and landlords

State	Who must disclose	What and when	Source
Minnesota	Seller	In writing before a sale agreement, if they know production occurred, with order and remediation status	Minn. Stat. 152.0275, subd. 2(m)
Montana	Owner, to occupants and buyers	Written notice before a lease or sale unless remediated by a certified contractor	MCA 75-10-1305
Oregon	Owner of unfit-for-use property	Verbatim statement in 10-point bold on the sale document; copies to the state within 10 days	OAR 333-040-0100

Minnesota makes a seller who knew and stayed silent liable for remediation costs and attorney fees. Montana pairs notice with immunity once DEQ confirms the standard is met. Colorado lists a seller disclosure statute, C.R.S. 38-35.7-103, and grants immunity when verification testing results go to the local governing body, according to CDPHE.

Which situation are you in

Stop at the first match.

• Listed property. The state program governs: hire the credentialed sampler and cleaner it names; no reoccupancy until delisted.
• Buying, suspect use. Get the seller’s disclosure where required, then independent composite screening before closing.
• Landlord after a tenant. Screen first; in Colorado a composite above 0.2 means a full assessment, and Montana requires notice to the next tenant unless remediated.
• No state standard. Write a target into the contract before cleaning; EPA reports 0.1 as the most common state value.
• Containers or lab equipment left behind. Stop work and call law enforcement, as EPA advises.

Signs it is bigger than it looks

• Very high pre-samples: the Connecticut guidelines cite data that one cleaning may not reach 0.1 when pre-cleaning results exceed 10.
• A shared forced-air system; EPA lets a mattress stay only if it was not on the source room’s HVAC.
• Drain or septic odours, which bring in plumbing and outdoor work.
• Mobile homes and RVs, which EPA says some states found cost-prohibitive to clean.
• Multi-unit buildings: Colorado’s rule says one building can hold several affected properties.
• Failed samples after three washes, when EPA has encapsulation or removal weighed with the regulator.

For contractors: scope, documentation, line items

Source	Published figure	Age and caveat
EPA Appendix B, citing IIR	$5,000 to $150,000	Undated estimate
House Report 110-8	$5,000 to $15,000 for 1,500 sq ft	2007, one contractor

The same House Report 110-8 says most insurers excluded ‘contamination’ and ‘felony activities’ for private homes in 2007; whether a policy responds is for its wording, the state insurance department and a licensed professional.

• Line items: assessment, pre- and post-sampling, removal and disposal, HEPA vacuuming, HVAC, washing by square foot, encapsulation, with refurbishment separate, as EPA’s cost appendix distinguishes.
• Documentation: floor plan with sample points, photos, chain of custody, blanks, lab method and detection limit.
• Regulatory duty: state credential, work-plan approval where required (Oregon, Montana), HAZWOPER training.
• What an adjuster asks for: the lab report, the standard used, and proof of sampler independence.

Questions people actually ask

Can a meth house be cleaned up?

Usually, yes. Every rule read for this page sets a cleanup path that ends in wipe samples below the state limit, with demolition as the alternative; Kentucky and Colorado both name demolition as an owner option. EPA flags mobile homes as the main exception, because porous materials can make cleaning cost more than replacing.

Can hydrogen peroxide be used for meth decontamination?

EPA does not recommend it yet. Its 2021 guidelines say peroxide-based proprietary cleaners may work, but meth may oxidise to another compound, so their effectiveness should be verified first. EPA’s recommended wash is household detergent and water, rinsed, repeated and confirmed by sampling.

How much does meth cleaning cost?

Published figures are old and wide. EPA cites an estimate of $5,000 to $150,000 per cleanup, and a 2007 House report quotes one contractor at $5,000 to $15,000 for a 1,500 square foot house. Sampling, debris volume, HVAC work and asbestos findings move the total, according to EPA.

Does meth contamination dissipate over time?

No rule read for this page gives credit for elapsed time; each releases a property only on sample results below the limit. EPA says how far residue migrates through materials is still unknown, which is why it treats paint as a barrier after cleaning, never a substitute for it.

What is the legal limit for meth residue in a house?

It depends on the state. Washington, Montana and California use 1.5 micrograms per 100 square centimetres, Utah 1.0, Colorado 0.5 for living space, and Tennessee and Kentucky 0.1. EPA reports the state range as 0.05 to 1.5, with 0.1 the most common value.

Do I need a certified company for meth lab cleanup?

In several states, yes. Colorado, Montana, Washington, Oregon, Tennessee and Kentucky credential the people who sample, clean or both. Minnesota’s health department says it does not license cleanup firms and points contractors to OSHA’s hazardous waste standard, 29 CFR 1910.120.