RCRA gives EPA — and any state authorized to run its own hazardous waste program in EPA's place — the authority to regulate hazardous waste (see RCRA basics). Most authorized states rely entirely on the federal D/F/K/P/U waste codes. A handful don't — they add their own supplemental codes on top, either because they regulate some wastes as hazardous that the federal rules don't reach, or because they want a record of how a waste is being managed that the federal codes don't capture.
Two different jobs, sometimes on the same line
Not every state code identifies a substance. California's and Massachusetts's codes work like RCRA's — each one names a specific waste type. Texas's is different: it's a formula the generator assembles themselves (a sequence number they register, a form code, and a classification letter), not a fixed list to look up. New York's and Washington's are different again — some of their codes describe how a waste will be handled or why it qualifies as hazardous under state-specific criteria, not what it chemically is. Always check which kind of code a given state expects before assuming one substitutes for another.
Where ManifestMate stands today: this page is reference material only. The manifest creation form doesn't yet capture or submit a state waste code — see the note on the manifest form when a generator or designated facility is in one of the states below. EPA's e-Manifest system does have real, dedicated fields for this (confirmed against its own schema — a generator-state field, a facility-state field, and a separate one just for Texas's code format), so submitting one electronically is possible; ManifestMate just doesn't build the field for you yet.
State-by-state reference
Search or browse below. States marked "confirmed — no supplemental codes" have been specifically checked, not just left out. Any state not listed here simply hasn't been researched yet — that's not the same as confirmed-clean.
California
Department of Toxic Substances Control (DTSC)
CA requires at least one RCRA code (if federally regulated) PLUS at least one CA state waste code on the manifest for waste generated in or shipped to California. CA also regulates some wastes as hazardous that are not RCRA hazardous federally (broader TTLC/STLC thresholds).
Title 22 CCR, Appendix XII to Chapter 12 of Division 4.5
Related but separate system: Hazardous Waste Report Management Method (HWRMM) codes are added by destination facilities only, describing how waste was handled -- not modeled here since generators/transporters never enter them.
View source →Connecticut
Connecticut Department of Energy and Environmental Protection (CT DEEP)
These CR-prefixed codes apply ONLY to non-RCRA-hazardous wastes in Connecticut -- per NEWMOA's own note, they are explicitly NOT state hazardous waste codes in the RCRA sense. Wastes bearing these codes must still be shipped by CT-permitted transporters (except CR05), and CT-based TSD facilities handling them need a state operating permit.
View source →Maine
Maine Department of Environmental Protection
M002 is a fixed additional code. Maine also maintains its own state-only K-, P-, and U-prefixed series for process-specific and chemical-specific wastes not federally listed -- these mirror RCRA's lettering scheme but are a distinct, Maine-only set of numbers, not extensions of the federal lists.
Additional state-only K###/P###/U### series exist for process- and chemical-specific wastes not federally listed. NEWMOA's source says to contact Maine DEP directly for the full numeric list -- not available from this source.
View source →Massachusetts
Massachusetts Department of Environmental Protection (MassDEP)
MA-prefixed codes are entered on the manifest alongside RCRA codes. Some (MA00, MA04) carry recordkeeping/manifesting requirements without contributing to federal generator status; others (MA95, MA97-99) describe how non-hazardous or recyclable material is being shipped on a hazardous waste manifest.
310 CMR 30.144 (state-designated hazardous waste) and related sections of 310 CMR 30.000
View source →New Hampshire
New Hampshire Department of Environmental Services
Supplemental codes used alongside RCRA codes where applicable.
View source →New Jersey
New Jersey Department of Environmental Protection (NJDEP)
New Jersey uses federal RCRA codes only -- no supplemental state waste codes, per NEWMOA's regional survey.
View source →New York
New York State Department of Environmental Conservation (NYSDEC)
Two distinct NY-specific systems. (1) A PCB waste listing (B001-B007), broader than the federal PCB threshold treatment in some respects. (2) A disposal-method code required in Item 13 ONLY when the receiving facility doesn't already report an ultimate-disposal management code in Item 19 -- describes the waste's fate, not its identity.
6 NYCRR Part 371.4(e) (PCB waste listing); 6 NYCRR Part 372.2(b)(2)(ii) (disposal-method codes)
View source →Pennsylvania
Pennsylvania Department of Environmental Protection (PADEP)
Pennsylvania incorporates federal RCRA hazardous waste regulations by reference (25 Pa. Code §260a.3(e)) without adding a supplemental hazardous-waste code system for the manifest. RCRA codes alone are used.
25 Pa. Code Chapters 260a-266a
PA's separate Residual Waste Program regulates NON-hazardous industrial waste under its own numeric code system (form 2540-PM-BWM0404) for state biennial reporting -- not used on the RCRA hazardous waste manifest, not modeled here.
View source →Rhode Island
Rhode Island Department of Environmental Management (RI DEM)
Supplemental codes used alongside RCRA codes where applicable.
View source →Texas
Texas Commission on Environmental Quality (TCEQ)
TX requires the Texas Waste Code entered alongside applicable RCRA codes (D/F/K/P/U), not instead of them. It's an 8-character code the generator itself assigns per registered waste stream (4-digit sequence number + 3-digit TCEQ form code + 1-digit classification code: H/1/2/3), not a fixed universal lookup table.
30 Texas Administrative Code (TAC) Chapter 335, Subchapter R (§335.501-.521)
Worked example: sequence 5555 + form code 001 + classification H -> 5555001H.
Known fixed special-case codes: PHRM005H (non-creditable hazardous waste pharmaceuticals, 30 TAC §335.755(c)); RRCT- prefix (Railroad Commission of Texas-regulated oil & gas facilities).
Open question: the full 3-digit TCEQ form code list (from RG-022) isn't transcribed yet -- needed to actually construct a code programmatically. Sequence numbers are generator-specific, registered via TCEQ's own Notice of Registration process.
View source →Vermont
Vermont Department of Environmental Conservation
Supplemental codes used alongside RCRA codes where applicable. VT99 marks non-hazardous, tax-exempt materials shipped on a manifest.
Vermont Hazardous Waste Management Regulations, e.g. §7-206(a)(3), §7-213, §7-216
Source PDF references codes for PFOA & PFOS > 20 ppt immediately after VT99, but the text was truncated in the fetched version -- a specific VT code number for PFAS wastes wasn't captured; confirm directly against current VT DEC guidance.
View source →Washington
Washington State Department of Ecology
WA calls its program "Dangerous Waste." These state-only codes designate waste as dangerous based on WA-specific toxicity, persistence, or corrosivity criteria broader than federal RCRA characteristics -- a waste can be a WA dangerous waste without carrying any federal RCRA code at all.
WAC 173-303-100 (state-specific dangerous waste numbers / criteria)
WP01, WP03, and WT01 are the only WA state-only codes that designate Extremely Hazardous Waste (EHW); all others here are standard Dangerous Waste (DW).
WT01 vs. WT02 uses a published Toxic Category Table (X/A/B/C/D) and an equivalent-concentration formula, not a simple threshold lookup.
View source →Compiled 2026-07-27 from the cited sources. Not legal advice, and not a live regulatory feed — always confirm against the current version of the cited regulation or agency guidance before relying on this for an actual shipment.