Saltwater Disposal Wells in King County
Complete UIC injection & disposal well inventory from RRC permits, with reported H-10 volumes.
Active Wells
154
Permitted Capacity
478,995 bbl/d
Injected 12mo (thru 2025-06)
15.8M bbl
UIC Permits All Time
537
| STATUS | LEASE / WELL | API | OPERATOR | TYPE | PERMITTED BBL/D | INJECTED 12MO | ZONE (FT) |
|---|---|---|---|---|---|---|---|
| Active | BURNETT RANCH CO2 FLOOD "PA1" #W 1C | 42-269-31292 | HIGH RIVER RES OPER, LLC | Injection | 5,100 | -- | 4,444–5,550 |
| Active | BURNETT, S. B. ESTATE "AAAA" #A403 L | 42-269-31422 | HIGH RIVER RES OPER, LLC | Injection | 4,000 | -- | 5,160–5,199 |
| Active | BURNETT, S.B. ESTATE WA #47 | 42-269-31431 | HIGH RIVER RES OPER, LLC | Injection | 4,000 | -- | 2,950–5,318 |
| Active | BURNETT, S. B. ESTATE "W" #W 14AR | 42-269-31157 | HIGH RIVER RES OPER, LLC | Injection | 3,500 | -- | 5,050–5,246 |
| Active | BURNETT, S. B. ESTATE "YA" #Y 61A | 42-269-31508 | HIGH RIVER RES OPER, LLC | Injection | 3,000 | -- | 5,036–5,370 |
| Active | BURNETT, S. B. ESTATE "BBBB" #10 | 42-269-31538 | HIGH RIVER RES OPER, LLC | Injection | 3,000 | -- | 5,448–5,599 |
| Active | FORKS SOUTH BALT UNIT #G 22 | 42-269-32785 | MEDDERS OIL CO, INC | Injection | 2,800 | -- | 3,804–3,820 |
| Active | FORKS SOUTH BALT UNIT #G 11 | 42-269-32709 | MEDDERS OIL CO, INC | Injection | 2,800 | -- | 3,820–3,834 |
| Active | FORKS SOUTH BALT UNIT #G 35 | 42-269-32918 | MEDDERS OIL CO, INC | Injection | 2,800 | -- | 3,798–3,806 |
| Active | BURNETT RANCH CO2 FLOOD "PA1" #Q316 | 42-269-31828 | HIGH RIVER RES OPER, LLC | Injection | 2,685 | -- | 5,210–5,430 |
| Active | BIG -S- (TWIN PEAKS) UNIT #G250 U | 42-269-32113 | HIGH RIVER RES OPER, LLC | Injection | 2,500 | -- | 5,240–5,480 |
| Active | QQQ/ROSS (STRAWN SAND) UNIT #10 | 42-269-31694 | HIGH RIVER RES OPER, LLC | Injection | 2,500 | -- | 5,100–5,340 |
| Active | QQQ/ROSS (STRAWN SAND) UNIT #11 | 42-269-31659 | HIGH RIVER RES OPER, LLC | Injection | 2,500 | -- | 5,070–5,310 |
| Active | BURNETT RANCH CO2 FLOOD "PA1" #N 88A | 42-269-32883 | HIGH RIVER RES OPER, LLC | Injection | 2,500 | -- | 5,075–5,450 |
| Active | BIG -S- (TWIN PEAKS) UNIT #G242 | 42-269-31983 | HIGH RIVER RES OPER, LLC | Injection | 2,000 | -- | 5,280–5,320 |
| Active | RATLIFF #1 | 42-269-30994 | INTERNATIONAL WESTERN OIL CORP | Disposal | 2,000 | -- | 3,564–3,864 |
| Active | BIG -S- (TWIN PEAKS) UNIT #G227 | 42-269-31401 | HIGH RIVER RES OPER, LLC | Injection | 2,000 | -- | 5,236–5,310 |
| Active | PITCHFORK BALT WATERFLOOD UNIT #A 4 | 42-269-32255 | MEDDERS OIL CO, INC | Injection | 1,600 | -- | 3,786–3,860 |
| Active | BURNETT, S. B. ESTATE "NA" #83 | 42-269-32184 | HIGH RIVER RES OPER, LLC | Injection | 1,500 | -- | 2,666–2,726 |
| Active | BURNETT, S. B. ESTATE "NA" #39 | 42-269-31239 | HIGH RIVER RES OPER, LLC | Injection | 1,500 | -- | 2,668–2,690 |
| Active | BURNETT RANCH CO2 FLOOD "PA1" #E201 | 42-269-30336 | HIGH RIVER RES OPER, LLC | Injection | 1,500 | -- | 5,285–5,465 |
| Active | BURNETT, S. B. ESTATE "HHHH" #12 | 42-269-31755 | HIGH RIVER RES OPER, LLC | Injection | 1,250 | -- | 5,796–5,825 |
| Active | BURNETT, S. B. ESTATE "W" #W 41A | 42-269-31360 | HIGH RIVER RES OPER, LLC | Injection | 1,200 | -- | 5,198–5,260 |
| Active | BURNETT, S. B. ESTATE "W" #W 24 | 42-269-31459 | HIGH RIVER RES OPER, LLC | Injection | 1,000 | -- | 5,318–5,353 |
| Active | BURNETT, S. B. ESTATE "GG" #37 | 42-269-10026 | HIGH RIVER RES OPER, LLC | Injection | 1,000 | -- | 5,850–5,900 |
| Active | BURNETT, S. B. ESTATE "HHHH" #11 | 42-269-31683 | HIGH RIVER RES OPER, LLC | Injection | 1,000 | -- | 5,820–5,870 |
| Active | BISSETT, NE (STRAWN LIME) #3 | 42-269-30941 | NEW HEIGHT ENERGY, LLC | Injection | 1,000 | -- | 5,096–5,227 |
| Active | BURNETT, S. B. ESTATE "W" #W 43A | 42-269-31415 | HIGH RIVER RES OPER, LLC | Injection | 1,000 | -- | 3,660–5,781 |
| Active | QQQ/ROSS (STRAWN SAND) UNIT #6 | 42-269-31642 | HIGH RIVER RES OPER, LLC | Injection | 1,000 | -- | 5,130–5,354 |
| Active | BURNETT RANCH CO2 FLOOD "PA1" #N 86R | 42-269-32867 | HIGH RIVER RES OPER, LLC | Injection | 900 | -- | 5,075–5,450 |
| Active | ALEXANDER TRUST "N" #14 | 42-269-30286 | PATTON EXPL, INC | Injection | 900 | -- | 3,098–3,110 |
| Active | 6666-PITCHFORK UNIT #4FO | 42-269-32624 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,780–3,857 |
| Active | 6666-PITCHFORK UNIT #11PF | 42-269-32620 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,807–3,880 |
| Active | BURNETT, S. B. ESTATE "D" #11W | 42-269-00387 | CITATION OIL & GAS CORP | Injection | 800 | -- | 5,332–5,354 |
| Active | 6666-PITCHFORK UNIT #2PF | 42-269-32594 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,742–3,818 |
| Active | 6666-PITCHFORK UNIT #10SO | 42-269-32653 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,749–3,823 |
| Active | 6666-PITCHFORK UNIT #1SO | 42-269-32523 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,758–3,827 |
| Active | 6666-PITCHFORK UNIT #10FO | 42-269-32730 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,697–3,765 |
| Active | 6666-PITCHFORK UNIT #6FO | 42-269-32626 | BURNETT OIL CO., INC | Injection | 800 | -- | 3,777–3,852 |
| Active | SPRINGER, W. A. JR. #3 | 42-269-10313 | PATTON EXPL, INC | Injection | 600 | -- | 3,548–3,550 |
| Active | BURNETT, S. B. ESTATE "AAAA" #A409 U | 42-269-31568 | HIGH RIVER RES OPER, LLC | Injection | 500 | -- | 5,148–5,174 |
| Active | BURNETT, S. B. ESTATE "AAAA" #A409 L | 42-269-31568 | HIGH RIVER RES OPER, LLC | Injection | 500 | -- | 5,248–5,270 |
| Active | BURNETT, S. B. ESTATE "BBBB" #9 | 42-269-31533 | HIGH RIVER RES OPER, LLC | Injection | 500 | -- | 5,956–5,967 |
| Active | PARRAMORE "74" #6 | 42-269-31236 | WILLIAMS, A. OIL | Injection | 250 | -- | 3,122–3,134 |
| Active | ALEXANDER "A" #1D | 42-269-30001 | PATTON EXPL, INC | Disposal | 120 | -- | 2,876–2,917 |
| Active | KATZ (STRAWN) UNIT #222 | 42-269-32793 | ATLAS OPER LLC | Injection | 10,000 | -- | 4,790–5,456 |
| Active | A.W.M. #9 | 42-269-32231 | BURNETT OIL CO., INC | Disposal | 10,000 | -- | 4,389–4,450 |
| Active | TUMBLEWEED FOSTER UNIT #U 1A | 42-269-31701 | RIDGLEA ENGY I, LLC | Injection | 1,000 | -- | 3,900–3,960 |
| Active | SIMPSON #2 | 42-269-32081 | CREED OPER CO., LLC | Injection | 1,000 | -- | 3,305–3,311 |
| Active | SIMPSON #8A | 42-269-32250 | CREED OPER CO., LLC | Injection | 1,000 | -- | 3,316–3,317 |
| Active | TUMBLEWEED FOSTER UNIT #12 | 42-269-31612 | RIDGLEA ENGY I, LLC | Injection | 1,000 | -- | 3,864–3,884 |
| Active | TUMBLEWEED FOSTER UNIT #4 | 42-269-31512 | RIDGLEA ENGY I, LLC | Injection | 800 | -- | 3,839–3,854 |
| Active | SIMPSON #5 | 42-269-31762 | CREED OPER CO., LLC | Injection | 600 | -- | 3,306–3,330 |
| Active | GIBSON, MERRICK #2 | 42-269-31103 | CREED OPER CO., LLC | Injection | 500 | -- | 4,500–5,355 |
| Plugged | BATEMAN TRUST EST. ACCOUNT NO. 1 #30 | 42-269-00227 | NEW HEIGHT ENERGY, LLC | Injection | 5,000 | 694,565 | 5,230–5,325 |
| Inactive | BURNETT RANCH CO2 FLOOD "PA1" #1MI | 42-269-33016 | HIGH RIVER RES OPER, LLC | Injection | 8,000 | -- | 5,150–5,800 |
| Cancelled | FORKS SOUTH BALT UNIT #C 5 | 42-269-32412 | MEDDERS OIL CO, INC | Injection | 2,800 | -- | 3,784–3,803 |
| Plugged | PITCHFORK BALT WATERFLOOD UNIT #V 2 | 42-269-32496 | MEDDERS OIL CO, INC | Injection | 1,600 | -- | 3,666–3,860 |
| Cancelled | HARDWICK #1R | 42-269-32269 | S.B. STREET OPER, INC | Injection | 1,000 | -- | 5,220–5,300 |
| Inactive | BURNETT, S. B. "N" #N 79 | 42-269-31763 | UNION HILL DRILLING CO | Disposal | 11,250 | -- | 6,388–6,544 |
| Plugged | KATZ (STRAWN) UNIT #212 | 42-269-32795 | KINDER MORGAN PROD CO LLC | Injection | 10,000 | -- | 4,886–5,258 |
| Plugged | PARRAMORE, J. H. "B" #3D | 42-269-00168 | J & M SWD, LLC | Injection | 10,000 | -- | 3,140–3,144 |
| Plugged | BURNETT, S. B. ESTATE #Y 12A | 42-269-30229 | UNION HILL DRILLING CO | Injection | 8,300 | -- | 5,426–5,513 |
| Plugged | BURNETT, S. B. ESTATE #Y 12 | 42-269-30252 | UNION HILL DRILLING CO | Injection | 8,250 | -- | 5,470–5,530 |
| Plugged | BURNETT, S. B. ESTATE #N 80 L | 42-269-31912 | UNION HILL DRILLING CO | Injection | 6,450 | -- | 2,675–5,481 |
| Cancelled | BURNETT, S. B. ESTATE #Y 20AR | 42-269-00000 | UNION HILL DRILLING CO | Injection | 6,285 | -- | 5,230–5,610 |
| Cancelled | BURNETT, S. B. ESTATE "N" #65 | 42-269-31245 | PACIFIC ENTERPRISES OIL CO.(USA) | Injection | 6,100 | -- | 5,556–5,617 |
| Plugged | BURNETT, S. B. ESTATE #N 65 L | 42-269-31245 | UNION HILL DRILLING CO | Injection | 6,100 | -- | 5,296–5,618 |
| Plugged | BURNETT, S. B. ESTATE #N 10AL | 42-269-30331 | UNION HILL DRILLING CO | Injection | 5,900 | -- | 5,318–5,424 |
| Plugged | BURNETT, S. B. ESTATE #N 26 | 42-269-30393 | UNION HILL DRILLING CO | Injection | 5,850 | -- | 3,860–5,342 |
| Plugged | BURNETT, S. B. ESTATE #N 26 | 42-269-30393 | UNION HILL DRILLING CO | Injection | 5,850 | -- | 3,860–5,342 |
| Plugged | BURNETT, S. B. ESTATE #N 9A | 42-269-30317 | UNION HILL DRILLING CO | Injection | 5,800 | -- | 5,346–5,452 |
| Plugged | BURNETT, S. B. ESTATE #Y 26A | 42-269-30288 | UNION HILL DRILLING CO | Injection | 5,700 | -- | 5,114–5,482 |
| Plugged | BURNETT, S. B. ESTATE #Y 31A | 42-269-30372 | UNION HILL DRILLING CO | Injection | 5,700 | -- | 5,121–5,478 |
| Cancelled | BURNETT, S. B. ESTATE #Y 94A | 42-269-00000 | UNION HILL DRILLING CO | Injection | 5,550 | -- | 5,110–5,520 |
| Plugged | BURNETT, S. B. ESTATE #N 7A | 42-269-30314 | UNION HILL DRILLING CO | Injection | 5,500 | -- | 5,330–5,392 |
| Plugged | BURNETT, S. B. ESTATE #Y 9 L | 42-269-30195 | UNION HILL DRILLING CO | Injection | 5,325 | -- | 5,297–5,566 |
| Plugged | BURNETT RANCH CO2 FLOOD "PA1" #Y 22A | 42-269-30269 | UNION HILL DRILLING CO | Injection | 5,250 | -- | 5,160–5,510 |
| Cancelled | BURNETT RANCH CO2 FLOOD "PA1" #Y 85A | 42-269-32059 | UNION HILL DRILLING CO | Injection | 5,100 | -- | 5,276–5,581 |
| Plugged | BURNETT RANCH CO2 FLOOD "PA1" #Y 63A | 42-269-31618 | UNION HILL DRILLING CO | Injection | 5,100 | -- | 5,388–5,408 |
| Plugged | BURNETT, S. B. ESTATE "AAAA" #AA 1AA | 42-269-31318 | TAUBERT, STEED, GUNN & MEDDERS | Injection | 5,000 | -- | 5,246–5,274 |
| Plugged | KATZ (STRAWN) UNIT #121 | 42-269-31666 | KINDER MORGAN PROD CO LLC | Injection | 5,000 | -- | 4,850–5,148 |
| Plugged | BURNETT, S. B. ESTATE "X" #4 X | 42-269-30126 | UNION HILL DRILLING CO | Injection | 5,000 | -- | 5,201 |
| Cancelled | HENDERSON #1 | 42-269-31661 | HENDERSON & ERICKSON, INC | Injection | 5,000 | -- | 4,030–5,978 |
| Plugged | SOWELL "A" #2 | 42-269-31418 | UNION HILL DRILLING CO | Injection | 5,000 | -- | 5,197–5,238 |
| Cancelled | KATZ (STRAWN) UNIT #108 | 42-269-32808 | KINDER MORGAN PROD CO LLC | Injection | 5,000 | -- | 4,750–5,455 |
| Plugged | KATZ (STRAWN) UNIT #1221 | 42-269-31752 | KINDER MORGAN PROD CO LLC | Injection | 5,000 | -- | 4,814–5,102 |
| Plugged | BURNETT, S. B. ESTATE #Y 19 | 42-269-31153 | UNION HILL DRILLING CO | Injection | 4,950 | -- | 5,300–5,652 |
| Plugged | BURNETT, S. B. ESTATE #Y 20 | 42-269-31158 | UNION HILL DRILLING CO | Injection | 4,950 | -- | 5,274–5,600 |
| Cancelled | BURNETT RANCH CO2 FLOOD "PA1" #N 91 | 42-269-32858 | UNION HILL DRILLING CO | Injection | 4,800 | -- | 5,140–5,455 |
| Cancelled | BURNETT, S. B. ESTATE #Y 28 | 42-269-00000 | UNION HILL DRILLING CO | Injection | 4,800 | -- | 5,160–5,510 |
| Cancelled | BURNETT, S. B. ESTATE #Y 88A | 42-269-32065 | UNION HILL DRILLING CO | Injection | 4,800 | -- | 5,168–5,545 |
| Plugged | BURNETT, S. B. ESTATE #N 17 | 42-269-30333 | UNION HILL DRILLING CO | Injection | 4,650 | -- | 5,117–5,404 |
| Plugged | BURNETT, S. B. ESTATE #Y 13A | 42-269-30234 | UNION HILL DRILLING CO | Injection | 4,650 | -- | 5,184–5,540 |
| Cancelled | BURNETT, S. B. ESTATE "QQQ" #15 | 42-269-12146 | PACIFIC ENTERPRISES OIL CO.(USA) | Injection | 4,500 | -- | 5,386–5,431 |
| Inactive | QQQ/ROSS (STRAWN SAND) UNIT #17 | 42-269-31882 | HIGH RIVER RES OPER, LLC | Injection | 4,500 | -- | 5,376–5,406 |
| Cancelled | ROSS, W. R. "A" #7 | 42-269-00299 | MARATHON OIL CO | Injection | 4,500 | -- | 5,382–5,629 |
| Plugged | ROSS, W. R. "A" #7D | 42-269-00299 | ARMOR PETRO, INC | Injection | 4,500 | -- | 5,382–5,629 |
| Plugged | BURNETT, S. B. ESTATE "NA" #5 | 42-269-30309 | UNION HILL DRILLING CO | Injection | 4,300 | -- | 5,312–5,370 |
| Plugged | BURNETT, S. B. ESTATE #N 11 | 42-269-30294 | UNION HILL DRILLING CO | Injection | 4,200 | -- | 5,313–5,350 |
Source: RRC UIC well master and H-10 injection filings. H-10s are annual filings on staggered anniversaries — injected volumes shown through 2025-06, the newest month with complete reporting; recent months are never estimated.