Energy Recovery ERII Peer Comparison

NASDAQ ERII
$7.31 -0.07 (-0.95%)
As of: Sep 10, 2026 · 3:24 PM EDT
Peer Comparison

96 Comparable Companies

Industry Water Treatment

Energy Recovery, Inc. (ERII) is the 63rd largest of 96 Water Treatment companies by market capitalisation, at 376.45 Mn, behind Star Group, L.P. at 422.75 Mn. It trades on a P/E of 24.54, broadly in line with the peer median of 23.48. The table below compares all 96 on 8 financial metrics.

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# Ticker Company match industry_code industry_group industry_group_code Market Capitalization P/E P/S Enterprise Value
1 ECL Ecolab Inc. primary I-38 Environmental Equipment IG-09 76.18 Bn 37.10 4.52 71.04 Bn
2 XYL Xylem Inc. primary I-38 Environmental Equipment IG-09 25.03 Bn 24.81 2.74 23.75 Bn
3 VLTO Veralto Corp primary I-38 Environmental Equipment IG-09 22.92 Bn 23.20 4.02 20.80 Bn
4 BMI Badger Meter Inc primary I-38 Environmental Equipment IG-09 3.60 Bn 28.67 4.09 3.51 Bn
5 NWPX NWPX Infrastructure, Inc. primary I-38 Environmental Equipment IG-09 1.00 Bn 20.46 1.74 0.98 Bn
6 ERII Energy Recovery, Inc. primary I-38 Environmental Equipment IG-09 0.38 Bn 24.54 3.12 0.28 Bn
7 CDZI Cadiz Inc primary I-38 Environmental Equipment IG-09 0.33 Bn -8.05 23.04 0.32 Bn
8 AIRJ AirJoule Technologies Corp. primary I-38 Environmental Equipment IG-09 0.30 Bn -3.51 — 0.26 Bn
9 CLWT Euro Tech Holdings Co Ltd primary I-38 Environmental Equipment IG-09 0.01 Bn 8.22 0.93 -0.01 Bn
10 RAIN Rain Enhancement Technologies Holdco, Inc. primary I-38 Environmental Equipment IG-09 0.01 Bn -1.40 1,781.09 0.01 Bn
11 QWTR Quest Water Global, Inc. primary I-38 Environmental Equipment IG-09 0.00 Bn 5.08 — 0.00 Bn
12 CETI Cyber Enviro-Tech, Inc. primary I-38 Environmental Equipment IG-09 0.00 Bn -0.28 212.69 0.00 Bn
13 DXST Decent Holding Inc. primary I-38 Environmental Equipment IG-09 0.00 Bn — — 0.00 Bn
14 CDTG CDT Environmental Technology Investment Holdings Ltd primary I-38 Environmental Equipment IG-09 0.00 Bn -0.06 0.04 0.00 Bn
15 PH Parker-Hannifin Corp secondary I-10 Machinery IG-02 117.54 Bn 32.22 5.47 117.03 Bn
16 TT Trane Technologies plc secondary I-14 Construction Products IG-03 96.86 Bn 47.08 4.36 95.54 Bn
17 VRT Vertiv Holdings Co secondary I-07 Machinery IG-02 95.22 Bn 54.97 8.29 92.11 Bn
18 JCI Johnson Controls International plc secondary I-14 Construction Products IG-03 86.69 Bn 23.75 3.47 86.05 Bn
19 HON Honeywell International Inc secondary I-01 Aerospace and Defense IG-01 63.96 Bn 7.87 1.68 54.77 Bn
20 FIX Comfort Systems Usa Inc secondary I-14 Construction Products IG-03 55.78 Bn 162.29 14.09 53.92 Bn
21 WAB Westinghouse Air Brake Technologies Corp secondary I-11 Machinery IG-02 47.23 Bn 37.01 3.94 46.56 Bn
22 CARR CARRIER GLOBAL Corp secondary I-14 Construction Products IG-03 46.56 Bn 39.63 2.11 45.22 Bn
23 FERG Ferguson Enterprises Inc. /DE/ secondary I-31 Distribution and Rental IG-07 42.95 Bn 21.17 1.37 42.13 Bn
24 IDXX Idexx Laboratories Inc /De secondary H-05 Pharmaceuticals and Biotechnology HG-01 40.13 Bn 35.21 8.81 39.93 Bn
25 EME EMCOR Group, Inc. secondary I-15 Construction Services IG-04 33.13 Bn 23.02 1.78 32.20 Bn
26 IR Ingersoll Rand Inc. secondary I-10 Machinery IG-02 28.07 Bn 29.06 3.53 26.90 Bn
27 TDY Teledyne Technologies Inc secondary I-02 Aerospace and Defense IG-01 27.65 Bn 28.36 4.34 27.31 Bn
28 AWK American Water Works Company, Inc. secondary U-07 Regulated Utilities UG-02 27.43 Bn 24.32 5.19 27.24 Bn
29 DOV DOVER Corp secondary I-04 Machinery IG-02 25.15 Bn 22.16 2.99 23.39 Bn
30 NVT nVent Electric plc secondary I-07 Machinery IG-02 25.13 Bn 42.01 5.20 24.88 Bn
31 DD DuPont de Nemours, Inc. secondary M-02 Chemicals MG-01 17.29 Bn 93.46 2.47 15.55 Bn
32 MLI Mueller Industries Inc secondary I-09 Machinery IG-02 13.12 Bn 15.53 2.81 11.70 Bn
33 IESC IES Holdings, Inc. secondary I-16 Construction Services IG-04 12.92 Bn 29.23 3.24 12.53 Bn
34 LII Lennox International Inc secondary I-14 Construction Products IG-03 12.88 Bn 16.34 2.43 12.83 Bn
35 WTS Watts Water Technologies Inc secondary I-10 Machinery IG-02 11.70 Bn 30.47 4.37 11.35 Bn
36 WMS Advanced Drainage Systems, Inc. secondary I-13 Construction Products IG-03 9.68 Bn 21.43 3.01 9.52 Bn
37 AYI Acuity Inc. (De) secondary I-13 Construction Products IG-03 9.60 Bn 20.33 2.08 9.19 Bn
38 MOD Modine Manufacturing Co secondary I-14 Construction Products IG-03 9.45 Bn — — 9.38 Bn
39 SPXC SPX Technologies, Inc. secondary I-14 Construction Products IG-03 9.36 Bn 33.75 3.78 9.19 Bn
40 PNR PENTAIR plc secondary I-10 Machinery IG-02 9.12 Bn 14.00 2.27 9.03 Bn
41 STN Stantec Inc secondary I-15 Construction Services IG-04 8.00 Bn 12.26 0.76 8.00 Bn
42 AOS Smith A O Corp secondary I-14 Construction Products IG-03 7.77 Bn 15.53 2.04 7.59 Bn
43 ZWS Zurn Elkay Water Solutions Corp secondary I-13 Construction Products IG-03 7.60 Bn 27.52 4.25 7.23 Bn
44 AAON Aaon, Inc. secondary I-14 Construction Products IG-03 6.29 Bn 39.49 3.26 6.29 Bn
45 FTDR Frontdoor, Inc. secondary F-13 Insurance FG-04 5.59 Bn 20.47 2.60 4.96 Bn
46 PSN Parsons Corp secondary I-02 Aerospace and Defense IG-01 4.92 Bn 22.93 0.78 4.66 Bn
47 CSW Csw Industrials, Inc. secondary I-14 Construction Products IG-03 4.81 Bn — — 4.78 Bn
48 TPC Tutor Perini Corp secondary I-15 Construction Services IG-04 4.53 Bn 25.61 0.76 3.32 Bn
49 FELE Franklin Electric Co Inc secondary I-10 Machinery IG-02 4.27 Bn 27.07 1.93 4.17 Bn
50 ITRI Itron, Inc. secondary I-07 Machinery IG-02 4.09 Bn 13.72 1.78 3.34 Bn
51 LGN Legence Corp. secondary I-14 Construction Products IG-03 4.04 Bn -43.57 1.22 3.75 Bn
52 MWA Mueller Water Products, Inc. secondary I-10 Machinery IG-02 3.67 Bn 16.52 2.48 3.18 Bn
53 CECO Ceco Environmental Corp secondary I-37 Environmental Equipment IG-09 3.28 Bn -116.30 3.63 3.21 Bn
54 ABM Abm Industries Inc /De/ secondary I-27 Business Services IG-06 2.87 Bn 17.28 0.31 2.76 Bn
55 REZI Resideo Technologies, Inc. secondary I-14 Construction Products IG-03 2.87 Bn 7.90 0.37 2.32 Bn
56 WOR Worthington Enterprises, Inc. secondary I-13 Construction Products IG-03 2.83 Bn 18.11 2.05 2.80 Bn
57 HAYW Hayward Holdings, Inc. secondary I-10 Machinery IG-02 2.78 Bn 17.24 2.38 2.30 Bn
58 EFXT Enerflex Ltd. secondary E-11 Oilfield Services and Equipment EG-04 2.74 Bn -7.97 1.24 2.66 Bn
59 HWKN Hawkins Inc secondary M-02 Chemicals MG-01 2.52 Bn 31.21 2.27 2.51 Bn
60 WHR Whirlpool Corp /De/ secondary D-06 Household Durables DG-02 2.33 Bn 13.34 0.16 1.09 Bn
61 BBUC Brookfield Business Corp secondary I-15 Construction Services IG-04 2.30 Bn 229.57 0.09 -2.46 Bn
62 LCII Lci Industries secondary I-09 Machinery IG-02 2.25 Bn 10.65 0.56 2.03 Bn
63 GRC Gorman Rupp Co secondary I-10 Machinery IG-02 1.92 Bn 30.73 2.73 1.87 Bn
64 AMRC Ameresco, Inc. secondary I-15 Construction Services IG-04 1.19 Bn — — 1.10 Bn
65 SPH Suburban Propane Partners Lp secondary E-07 Refining and Marketing EG-03 1.16 Bn 10.60 0.83 1.15 Bn
66 ONT Onterris, Inc. secondary I-33 Waste Management IG-08 0.65 Bn -58.00 0.84 0.63 Bn
67 EVOH EvoAir Holdings Inc. secondary I-14 Construction Products IG-03 0.63 Bn -56.89 1,861.02 0.62 Bn
68 LMB Limbach Holdings, Inc. secondary I-14 Construction Products IG-03 0.58 Bn 19.08 0.84 0.56 Bn
69 CWCO Consolidated Water Co. Ltd. secondary U-07 Regulated Utilities UG-02 0.45 Bn 31.09 3.52 0.32 Bn
70 ACTG Acacia Research Corp secondary F-11 Asset and Wealth Management FG-03 0.44 Bn -29.53 1.59 0.12 Bn
71 SGU Star Group, L.P. secondary E-07 Refining and Marketing EG-03 0.42 Bn 4.88 0.22 0.32 Bn
72 CVEO Civeo Corp secondary I-27 Business Services IG-06 0.36 Bn -27.35 0.53 0.34 Bn
73 NNBR Nn Inc secondary I-09 Machinery IG-02 0.18 Bn -4.77 0.39 0.16 Bn
74 AP Ampco Pittsburgh Corp secondary I-09 Machinery IG-02 0.17 Bn -3.87 0.52 0.16 Bn
75 RNGE Range Impact, Inc. secondary R-19 Property Developers RG-05 0.09 Bn 7.38 23.65 0.09 Bn
76 INV Innventure, Inc. secondary F-11 Asset and Wealth Management FG-03 0.09 Bn -0.13 26.43 0.09 Bn
77 TKLS Trutankless, Inc. secondary I-14 Construction Products IG-03 0.07 Bn -11.99 34.61 0.07 Bn
78 GEOS Geospace Technologies Corp secondary I-04 Machinery IG-02 0.07 Bn -1.77 0.72 0.06 Bn
79 FTEK Fuel Tech, Inc. secondary I-37 Environmental Equipment IG-09 0.05 Bn -14.60 1.86 0.03 Bn
80 NEPH Nephros Inc secondary H-06 Medical Devices and Diagnostics HG-02 0.05 Bn 31.91 2.34 0.04 Bn
81 SAIH SAIHEAT Ltd secondary T-59 Fintech TG-09 0.04 Bn -7.38 10.53 0.04 Bn
82 SCWO 374Water Inc. secondary I-37 Environmental Equipment IG-09 0.04 Bn -2.12 21.87 0.04 Bn
83 ENGS Energys Group Ltd secondary I-14 Construction Products IG-03 0.04 Bn — — 0.04 Bn
84 BEEM Beam Global secondary I-45 Clean Energy Equipment IG-10 0.03 Bn -1.75 1.13 0.03 Bn
85 BCHT Birchtech Corp. secondary I-37 Environmental Equipment IG-09 0.03 Bn -7.44 1.35 0.01 Bn
86 LIQT Liqtech International Inc secondary I-37 Environmental Equipment IG-09 0.01 Bn -1.84 0.96 0.00 Bn
87 CVAT Cavitation Technologies, Inc. secondary I-04 Machinery IG-02 0.01 Bn -12.31 1,345.88 0.01 Bn
88 JBDI JBDI Holdings Ltd secondary I-31 Distribution and Rental IG-07 0.01 Bn 91.49 1.40 0.01 Bn
89 BNET Bion Environmental Technologies Inc secondary M-04 Chemicals MG-01 0.01 Bn -5.79 — 0.01 Bn
90 WFF WF Holding Ltd secondary I-09 Machinery IG-02 0.01 Bn -2.19 72.61 0.01 Bn
91 GNOLF Genoil Inc secondary E-11 Oilfield Services and Equipment EG-04 0.01 Bn -0.01 — 0.01 Bn
92 WKSP Worksport Ltd secondary D-02 Automobiles and Components DG-01 0.01 Bn -0.27 0.31 0.00 Bn
93 GCDT Green Circle Decarbonize Technology Ltd secondary I-14 Construction Products IG-03 0.01 Bn -2.27 1.19 0.00 Bn
94 IVDA Iveda Solutions, Inc. secondary T-41 Infrastructure Software TG-06 0.00 Bn -1.07 0.74 0.00 Bn
95 WXM WF International Ltd. secondary I-14 Construction Products IG-03 0.00 Bn — — 0.00 Bn
96 SLND-WT Southland Holdings, Inc. secondary I-15 Construction Services IG-04 0.00 Bn 0.00 0.00 -0.04 Bn