Cretex Specialty Products
Surcharge Level Indicator
The Surcharge Level Indicator (S.L.I.) is a high level water recording instrument  designed for sanitary and storm sewer surcharge level indication.

                                                 Key Benefits
Surcharge Level Indicator
  • Available in 4' and 6' lengths.
  • PVC and stainless steel construction.
  • Durable, Lightweight, Corrosive Resistant.
  • Non buoyant due to hollow construction.
  • Will not obstruct manhole entry.
  • Can be installed or removed, in most cases, without manhole entry.
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Cretex Specialty Products
N16 W23390 Stone Ridge Drive
Waukesha, WI 53188
Ph. 800-345-3764
Fax (262) 542-0301

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