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Wastewater treatment systems

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Wastewater treatment systems for sale on largest auction and classifieds sites

Home / / Wastewater treatment systems refurbished & used for sale | For Sale USA
Low-Maintenance

Low-Maintenance

$6.84
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Onsite wastewater treatment - onsite,

Onsite wastewater treatment - onsite,

$31.82
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Membrane systems for - systems,

Membrane systems for - systems,

$26.48
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Nicholas gray natural - nicholas,

Nicholas gray natural - nicholas,

$307.76
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Low maintenance mechanically - low-maintenance,

Low maintenance mechanically - low-maintenance,

$14.00
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Sustainable wastewater - sustainable,

Sustainable wastewater - sustainable,

$58.73
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Nature based wastewater - nature-based,

Nature based wastewater - nature-based,

$242.11
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The operation and maintenance - operation,

The operation and maintenance - operation,

$50.00
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Sustainable wastewater - sustainable,

Sustainable wastewater - sustainable,

$58.71
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Small community wastewater - small,

Small community wastewater - small,

$20.63
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Membrane systems for - systems,

Membrane systems for - systems,

$18.00
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Constructed wetlands aquatic - constructed,

Constructed wetlands aquatic - constructed,

$15.00
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Membrane systems for - membrane,

Membrane systems for - membrane,

$59.99
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José herrera melián - a, herrera-melián

José herrera melián - a, herrera-melián

$70.11
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Nature based wastewater - nature-based,

Nature based wastewater - nature-based,

$239.45
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Advancements bio systems - in, bio-systems

Advancements bio systems - in, bio-systems

$140.00
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Design manual onsite - manual,

Design manual onsite - manual,

$45.31
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Bilge oily wastewater - bilge, +

Bilge oily wastewater - bilge, +

$59.95
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Design manual onsite - design,

Design manual onsite - design,

$31.87
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Alternatives for small - for,

Alternatives for small - for,

$24.22
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Water and wastewater - water,

Water and wastewater - water,

$41.27
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Hydrogen sulfide corrosion - hydrogen,

Hydrogen sulfide corrosion - hydrogen,

$24.22
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Natural wastewater treatment - wastewater,

Natural wastewater treatment - wastewater,

$307.74
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Alternatives for small - alternatives,

Alternatives for small - alternatives,

$24.22
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Technologies for small water - technologies,

Technologies for small water - technologies,

$13.99
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Operation wastewater - of,

Operation wastewater - of,

$50.00
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Biological wastewater - biological,

Biological wastewater - biological,

$57.58
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Artificial intelligence - artificial, in

Artificial intelligence - artificial, in

$209.66
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Wastewater treatment and - wastewater,

Wastewater treatment and - wastewater,

$231.39
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Nature based wastewater - nature-based,

Nature based wastewater - nature-based,

$106.95
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Membrane systems for - systems,

Membrane systems for - systems,

$65.95
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Alternative wastewater - alternative,

Alternative wastewater - alternative,

$226.73
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Site wastewater treatment - on-site,

Site wastewater treatment - on-site,

$45.00
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Wastewater systems engineering - wastewater,

Wastewater systems engineering - wastewater,

$13.99
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Biological wastewater - biological,

Biological wastewater - biological,

$84.95
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Low cost water and wastewater - cost,

Low cost water and wastewater - cost,

$277.19
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Sulfide wastewater - in,

Sulfide wastewater - in,

$37.95
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Sulfide wastewater - sulfide, in

Sulfide wastewater - sulfide, in

$39.99
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Advances biological - advances,

Advances biological - advances,

$272.13
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Wastewater treatment - wastewater,

Wastewater treatment - wastewater,

$167.19
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Sulfide wastewater - sulfide, in

Sulfide wastewater - sulfide, in

$40.00
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Cincinnati milacron cimcool - cincinnati,

Cincinnati milacron cimcool - cincinnati,

$25.00
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Marine wastewater outfalls - wastewater,

Marine wastewater outfalls - wastewater,

$90.10
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Sustainable wastewater - sustainable,

Sustainable wastewater - sustainable,

$58.72
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Design manual onsite - design,

Design manual onsite - design,

$44.50
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Instrumentation control and - instrumentation,,

Instrumentation control and - instrumentation,,

$173.99
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Water and wastewater - water,

Water and wastewater - water,

$41.27
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Natural systems for - systems, wastewater

Natural systems for - systems, wastewater

$25.49
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Cost efficient wastewater - cost-efficient,

Cost efficient wastewater - cost-efficient,

$464.47
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Design manual onsite - design,

Design manual onsite - design,

$62.49
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Advances biological - in,

Advances biological - in,

$398.78
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Septic tank treatment pcs - septic, 12

Septic tank treatment pcs - septic, 12

$16.99
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Incentive systems for - incentive,

Incentive systems for - incentive,

$249.02
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Natural wastewater treatment - natural,

Natural wastewater treatment - natural,

$248.68
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Incentive systems for - incentive,

Incentive systems for - incentive,

$248.65
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Design manual onsite - design,

Design manual onsite - design,

$64.68
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Financing and charges for - charges,

Financing and charges for - charges,

$134.35
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Black tank treatment toilet - rv,

Black tank treatment toilet - rv,

$31.62
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Incentive systems for - systems,

Incentive systems for - systems,

$154.27
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Decentralised wastewater - decentralised,

Decentralised wastewater - decentralised,

$98.03
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Small community wastewater - small,

Small community wastewater - small,

$29.81
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Decentralised wastewater - decentralised,

Decentralised wastewater - decentralised,

$98.04
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Design manual onsite - design,

Design manual onsite - design,

$47.12
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Microbial electrochemical - microbial,

Microbial electrochemical - microbial,

$217.18
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Andreas ulrich decentralised - ulrich,

Andreas ulrich decentralised - ulrich,

$99.57
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Combined industrial wastewater - industrial,

Combined industrial wastewater - industrial,

$58.68
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Alternative wastewater - alternative,

Alternative wastewater - alternative,

$242.14
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Cost efficient wastewater - cost-efficient,

Cost efficient wastewater - cost-efficient,

$453.03
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Development wastewater - in,

Development wastewater - in,

$375.56
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Biological wastewater - biological,

Biological wastewater - biological,

$161.44
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Natural wastewater treatment - wastewater,

Natural wastewater treatment - wastewater,

$307.75
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Low cost water - water, and

Low cost water - water, and

$297.95
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Septic tank shaft aerator with - tank,

Septic tank shaft aerator with - tank,

$322.98
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Septic tank shaft - tank,

Septic tank shaft - tank,

$343.55
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Natural wastewater treatment - wastewater,

Natural wastewater treatment - wastewater,

$247.62
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Zoeller pumps 170 - pumps, 170-0078

Zoeller pumps 170 - pumps, 170-0078

$74.99
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Soil based wastewater - soil-based,

Soil based wastewater - soil-based,

$87.65
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Management innovation s - in, u.s

Management innovation s - in, u.s

$99.65
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With brackets septic tank - 14",

With brackets septic tank - 14",

$343.53
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Decentralised wastewater - decentralised,

Decentralised wastewater - decentralised,

$58.40
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Domestic wastewater treatment - domestic,

Domestic wastewater treatment - domestic,

$78.40
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Wastewater treatment advanced - wastewater, treatment:

Wastewater treatment advanced - wastewater, treatment:

$240.85
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Treatment pharmaceutical - treatment, of

Treatment pharmaceutical - treatment, of

$249.78
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Nature based wastewater - nature-based,

Nature based wastewater - nature-based,

$146.95
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Septic tank treatment liquid - tank,

Septic tank treatment liquid - tank,

$79.99
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Natural wastewater treatment - natural,

Natural wastewater treatment - natural,

$238.60
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📊86 listings · from $6.84 · avg $133.62

Browse 86 wastewater treatment systems listings currently in our index. Prices range from $6.84 to $464.47, with an average of $133.62. Whether you are hunting for a bargain or looking for a top-spec model, the selection below covers all price points — new, used and refurbished. More about wastewater treatment systems →

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Everything you need to know about wastewater treatment systems

Whether you are looking for a brand-new or second-hand wastewater treatment systems, eBay offers one of the largest selections available online. With 86 active listings at the time of this page's last update, you have plenty of choice across different conditions, sellers and price points. The cheapest option currently starts at $6.84, while premium listings can reach $464.47 — giving you a wide budget spread to work with. The average price of $133.62 can serve as a useful benchmark: listings below this tend to be used or auction-style, while those above often include extra accessories, warranties, or are sold by professional sellers with high feedback scores. Always check the seller's feedback rating and return policy before committing to a purchase. If you need the item quickly, filter by "Buy It Now" to avoid the uncertainty of auctions. For used items, look closely at the condition description and photos — terms like "good", "very good" and "like new" can mean very different things depending on the seller.

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