Short answer
Oak Lawn gets its water from Village of Oak Lawn Public Works Water Division, measured at 142 mg/L (hard on the USGS scale), as reported by the city's water supplier. Hard water speeds up sediment buildup in a tank, so flushing and anode checks matter more here.
Oak Lawn at a glance
| Water utility | Village of Oak Lawn Public Works Water Division Source |
|---|---|
| Water hardness | 142 mg/L (hard on the USGS scale), as reported by the city's water supplier Source |
| Who may pull a water heater permit | All contractors must be licensed with the Village and insured before permits issue; plumbers must provide Illinois Department of Public Health registration. Fee: Plumbing fee schedule: R-3 (single-family) minimum $200; additions/alterations $100; each additional fixture $15 Source |
| Gas utility | Nicor Gas Source |
| Electric utility | ComEd Source |
| Utility rebates | ComEd Appliance Rebates: ENERGY STAR heat pump water heater: $750 rebate (online/mail-in). Rules: purchased 7/1/2026-12/31/2026 directly through a retailer (purchases made through contractors not eligible); apply within 60 days of purchase or by 2/28/2027; installed at a ComEd residential service address Source |
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Water Heater Facts is an independent information service run by Strive LeadGen LLC. Local facts come from city, county and utility sources linked above; rules change, so confirm with the city before you start. Ratings and review counts change daily and are shown as of the date checked.