Chino Hills, California
Inland Empire Utilities Agency Ordinance § 2.6 prohibits installing, replacing, or enlarging a self-regenerating water softening appliance that discharges to a community sewer tributary to the IEUA regional sewerage system. Chino Hills is an IEUA contracting agency. That is an IEUA regional sewer/POTW rule — not a statewide ban. The 2025 CCR prints hardness as labeled wells and desalter columns, not a citywide blend.
- Hardness (Chino Wells)148 ppm (range 100–190)
- Hardness (Chino 1 Desalter)101 ppm (range 91–210)
- Total chlorine (system)0.6 ppm (range 0.05–1.45)
- TTHMs51 ppb LRAA (range 0–84)
Best match for Chino Hills
Portable-exchange softening — not a brine tank
A self-regenerating salt softener that drains to the sewer is prohibited here.
Portable-exchange tanks, if that exception applies at your address. The resin still removes hardness. The salt work happens off site. Do not install a self-regenerating unit to the sewer here.
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Other options that still fit
Salt-free conditioner
A salt-free conditioner changes how scale sticks. It does not soften. Soap and spots stay closer to untreated. No brine line.
Whole-house catalytic carbon for chloramine
Catalytic carbon with a chloramine claim (NSF/ANSI 42 for chloramine). Regular chlorine carbon is the wrong box.
Under-sink reverse osmosis
The under-sink RO we actually run is Cloud RO — NSF/ANSI 58, kitchen tap, not a whole-house tank. Check the exact listing if PFAS is why you are shopping. Shop Amazon first for under-sink RO, or buy Cloud direct. Waterdrop is a tankless option if you want that path. A certifier-listed pitcher is the cheap first step. Nobody is paying for a medical claim.
Shop under-sink reverse osmosisBuy Cloud RO directShop Waterdrop reverse osmosisShop PFAS-listed pitchers
Test the tap first
A homeowner kit is a start. It is not a state-certified lab. Use a certified lab when the decision is expensive.
On the report
- Water utility
- City of Chino Hills
- Hardness
- Chino Wells 148 ppm as CaCO3 (range 100–190). Chino 1 Desalter 101 ppm (range 91–210). Chino Hills Average and Monte Vista Water columns are N/A on that hardness row. Those are labeled columns, not a blended citywide number. 2025 Water Quality Consumer Confidence Report (additional contaminants table, sampled 2024–2025). — City of Chino Hills 2025 Water Quality Consumer Confidence Report
- Disinfectant
- Total chlorine residual, Chino Hills Water System column, 0.6 ppm (range 0.05–1.45). A chloramine row prints 1.33 ppm (range 1.15–1.44) on a labeled column. MRDL 4. 2025 report. — City of Chino Hills 2025 Water Quality Consumer Confidence Report
- Sanitation district
- Inland Empire Utilities Agency (Chino Hills is a contracting agency)
- Brine / salt to the sewer
- Self-regenerating salt softeners prohibited (district rule). IEUA Ordinance § 2.6 says the installation, replacement, or enlargement of any self-regenerating water softening appliance which discharges into the Community Sewer System that is tributary to the Regional Sewerage System shall not be allowed. Each contracting agency shall adopt a local ordinance to implement the restriction. The section does not apply to a portable-exchange water softener regenerated off-site at a lawfully regulated location. IEUA may offer a voluntary rebate for removal of an operational unit. The City of Chino Hills is an IEUA contracting agency. That is an IEUA regional sewer/POTW rule — not a statewide ban. Ask Chino Hills Public Works or the agency on the sewer bill about the address.
Also around here
Extra context besides the utility report and the chart above — geology, an unregulated table, or a published study. Not a second set of printed tap numbers.
- MicroplasticsWHO’s 2019 review examined studies that found microplastic particles in treated tap and bottled water in many places. That is a published-occurrence finding, not a number from this city’s water-quality report, and we do not invent a particles-per-liter count for the tap.Microplastics in drinking-water — World Health Organization
- Other 2025 table numbersThe same 2025 tables print these as labeled columns, not a blend we invented.HAA5 system average 8 ppb (range 0–18); footnote says TTHM/HAA5 averages are highest location running annual averages from imported and blended water. Nitrate as N, Chino Wells average 3.9 ppm (ND–4.7), MCL 10. Lead 90th percentile 0 ppb (2 of 30 sites above AL 15). Copper 90th 0.24 ppm (0 of 30 above AL 1.3).2025 Water Quality Consumer Confidence Report — City of Chino Hills
Chino Hills’ sewer rule is an Inland Empire Utilities Agency regional ordinance, not a statewide salt-softener ban. IEUA Ordinance § 2.6: the installation, replacement, or enlargement of any self-regenerating water softening appliance which discharges into the Community Sewer System that is tributary to the Regional Sewerage System shall not be allowed. Each contracting agency shall adopt a local ordinance. The section does not apply to a portable-exchange water softener regenerated off-site at a lawfully regulated location. IEUA may offer a voluntary rebate for removal of an operational unit. The City of Chino Hills is an IEUA contracting agency. The City of Chino Hills is not IEUA if the address is on another sewer. Ask Public Works or the agency on the sewer bill about the address.
Drinking water is city wells, Chino Basin Desalter Authority, and imported surface water via the Water Facilities Authority and Monte Vista Water District. The 2025 Water Quality Consumer Confidence Report prints hardness as labeled columns — Chino Wells 148 ppm as CaCO3 (range 100–190) and Chino 1 Desalter 101 ppm (range 91–210). The Chino Hills Average and Monte Vista Water columns are N/A on that hardness row. We do not invent a citywide blend.
Total chlorine residual on the Chino Hills Water System column 0.6 ppm (range 0.05–1.45). A chloramine row prints 1.33 ppm (range 1.15–1.44) on a labeled column. TTHMs system average 51 ppb (range 0–84); the footnote says that average is the highest locational running annual average. Kitchen shopping stays the Cloud RO / Waterdrop path already used on other cities if a listing is why you are looking.
Sources
- Ordinance regulating the regional sewerage system, § 2.6 Restrictions on self-regenerating water softening appliances — Inland Empire Utilities Agency. Accessed 2026-09-09.
- Water Softener Removal Rebate Program (IEUA service-area cities) — Inland Empire Utilities Agency. Accessed 2026-09-09.
- 2025 Water Quality Consumer Confidence Report — City of Chino Hills. Accessed 2026-09-09.
Updated September 9, 2026. A city file is chemistry we can cite plus the sewer rule. No invented detections.