Indianapolis, Indiana

Citizens Water Indianapolis 2025 Drinking Water Report (2024 data) prints system-wide hardness 292 ppm / 17 grains (range 149–420 ppm / 8.7–25 grains) and chloramines measured as total chlorine. No Measure S-style residential softener ban turned up. Ask the sewer agency on the bill.

Cited numbers from the utility report. Length follows the printed value against a labeled scale — not a health ranking. If the report has no number, it is not on the chart.

Hardness292 ppm / 17 gpg (range 149–420)
Chloramines2.0 ppm avg (range 0.12–2.9)
HAA534 ppb avg (LRAA 42; range 17–50)

On the report

Water utility: Citizens Energy Group (Citizens Water Indianapolis)
Hardness: System-wide average 292 ppm as CaCO3 (17 grains/gal). Maximum of all samples 420 ppm (25 grains). Range 149–420 ppm (8.7–25 grains). One system-wide row on the 2024 secondary table, not two supply columns we blended. 2025 Drinking Water Report. — Citizens Energy Group 2025 Drinking Water Report (2024 data)
Disinfectant: Chloramines measured as total chlorine. Indianapolis distribution average 2.0 ppm, maximum 2.9 ppm, range 0.12–2.9 ppm, MRDL 4. 2025 report (2024 data). — Citizens Energy Group 2025 Drinking Water Report (2024 data)
Brine / salt to the sewer: No district prohibition found in current research. No Indianapolis or Citizens Energy residential softener ban like LACSD Measure S turned up. Ask the sewer agency on the bill before you cut a brine drain.

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
Lead (90th percentile)The 2025 report prints 2024 Lead and Copper Rule tap sampling for Indianapolis. That is a 90th-percentile statistic, not every address.Lead 5.2 ppb (1 of 66 sites above AL 15; range ND–150). Action level 15 ppb.2025 Drinking Water Report (2024 data) — Citizens Energy Group
Other Citizens systems in the same bookletThe same PDF also prints Westfield and Westfield–South Madison tables. Those are not Indianapolis tap averages.Westfield hardness 368 ppm on that system’s row. South Madison hardness 415 ppm / 24 grains on that system’s row.2025 Drinking Water Report (2024 data) — Citizens Energy Group
PFASOpen this PWS in EPA’s UCMR 5 Data Finder. This file does not invent a detection from a ranking site.Fifth Unregulated Contaminant Monitoring Rule — U.S. Environmental Protection Agency

Indianapolis drinking water is Citizens Water (PWS IN5249004), with surface plants on the White River, Fall Creek, and Eagle Creek plus several groundwater plants. No Indianapolis or Citizens Energy residential softener ban like LACSD Measure S turned up. Ask the sewer agency on the bill before you cut a brine drain. This is not a legal opinion.

The 2025 Drinking Water Report (2024 data) prints hardness as one system-wide secondary row — average 292 ppm as CaCO3 (17 grains/gal), maximum 420 ppm (25 grains), range 149–420 ppm (8.7–25 grains). We do not invent a plant-by-plant blend beyond that printed row.

Chloramines measured as total chlorine in the Indianapolis distribution system: average 2.0 ppm, maximum 2.9 ppm, range 0.12–2.9 ppm. HAA5 average 34 ppb, LRAA 42 ppb, range 17–50. Kitchen shopping stays the Cloud RO / Waterdrop path already used on other cities if a listing is why you are looking.

What actually fits

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If soap will not lather and the glassware looks chalky

Two tall mineral tanks and a black brine tank of a salt-based water softener, plumbed with copper pipe in a garage. — Salt-based softener: two mineral tanks and a brine tank.

A salt-based softener is the thing that actually removes hardness. Size it from your grains and how much water you use, not bathroom count. It needs a drain.

Shop salt-based softeners

If you only want less scale and you hate salt bags

A single tall tank with no brine tank, installed in a laundry alcove next to a washing machine. — Salt-free conditioner: one tank, no salt bin.

A salt-free conditioner changes how scale sticks. It does not soften. Soap and spots stay closer to untreated. No brine line.

Shop salt-free conditioners

If the water tastes like pool-plus-ammonia

A single black whole-house carbon tank with a control head, installed in a garage and connected to copper pipe. — Whole-house carbon tank. No brine tank.

Catalytic carbon with a chloramine claim (NSF/ANSI 42 for chloramine). Regular chlorine carbon is the wrong box.

Shop catalytic carbon for chloramine

If you are shopping a PFAS listing for the kitchen

Under-sink reverse osmosis system with a white storage tank, filter canisters, and colored tubing in a kitchen cabinet. — Under-sink reverse osmosis: filters, tank, and a second faucet.

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. 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 Cloud RO Shop Waterdrop reverse osmosis Shop PFAS-listed pitchers

If you have not tested the tap

A homeowner kit is a start. It is not a state-certified lab. Use a certified lab when the decision is expensive.

Shop water test kits

Sources

2025 Drinking Water Report (2024 data) — Citizens Energy Group. Accessed 2026-09-06.

Updated September 6, 2026. A city file is chemistry we can cite plus the sewer rule. No invented detections.