Tap WaterIndex

← Ohio

Tap water quality report

Southwest Regional Water District

EPA monitoring tested this supplier for 109 contaminants and detected 17. A detection doesn't automatically mean the water is unsafe — the level and EPA source for each is below.

109
contaminants tested
17
detected
42,856
people served
0
health-based violations
Ohio rankingsLead in OhioPFAS in Ohio
Water source
Ground water
Ownership
Mixed public/private
Counties served
Butler

Compliance record

No violations on file. The EPA has no formal drinking-water violations recorded for this supplier.

PFAS detected

PFAS are industrial “forever chemicals”. These are the EPA's latest nationwide test results (2023–2025).
ContaminantMaxDetection ratePeriod
PFBS 0.0031 µg/L 1/4 2023

Other contaminants detected

Each bar shows the measured level as a share of the EPA limit: green is well under, amber is close to it, red is over. For lead and copper the limit applies to exactly the 90th-percentile figure shown, so red there means a real exceedance. For everything else the limit applies to a running annual average while the figure is the 95th percentile of this system's samples — over 100% is worth reading, but is not by itself a violation. Where a single sample came in higher than that percentile, it is noted under the bar. Formal violations are listed separately.
ContaminantLevel vs EPA limitDetection rateSourcePeriod
Copper
1303 µg/L 100%
of the EPA limit, at the 95th percentile of samples — 1300 µg/L
worst single sample: 1680 µg/L
128/129 SYR4 2013–2019
Bromodichloromethane
9.675 µg/L
No EPA limit set
worst single sample: 10.7 µg/L
38/38 SYR4 2012–2019
Bromoform
2.2235 µg/L
No EPA limit set
worst single sample: 2.5 µg/L
38/38 SYR4 2012–2019
Chloroform
8.34 µg/L
No EPA limit set
worst single sample: 9.9 µg/L
38/38 SYR4 2012–2019
Dibromochloromethane
7.07 µg/L
No EPA limit set
worst single sample: 8.9 µg/L
38/38 SYR4 2012–2019
TTHM
27.435 µg/L 34%
of the EPA limit 80 µg/L
worst single sample: 29.4 µg/L
38/38 SYR4 2012–2019
Dichloroacetic Acid
3.705 µg/L
No EPA limit set
worst single sample: 4.5 µg/L
34/38 SYR4 2012–2019
Nitrate
2835 µg/L 28%
of the EPA limit 10000 µg/L
worst single sample: 3000 µg/L
32/32 SYR4 2012–2019
Dibromoacetic Acid
3.175 µg/L
No EPA limit set
worst single sample: 3.9 µg/L
30/38 SYR4 2012–2019
Lead
0.0013 mg/L 8.7%
of the EPA limit 0.0150 mg/L
 25/25 LCR 2025
Lead
9.6515 µg/L 64%
of the EPA limit 15 µg/L
worst single sample: 18.5 µg/L
18/129 SYR4 2013–2019
Nitrate-Nitrite
2775 µg/L 28%
of the EPA limit 10000 µg/L
worst single sample: 3000 µg/L
16/16 SYR4 2012–2019
Total Haloacetic Acids (HAA5)
9.025 µg/L 15%
of the EPA limit 60 µg/L
worst single sample: 9.2 µg/L
6/38 SYR4 2012–2019
Trichloroacetic Acid
1.4 µg/L
No EPA limit set
 5/38 SYR4 2012–2019
Fluoride
998.5 µg/L 25%
of the EPA limit 4000 µg/L
worst single sample: 1000 µg/L
4/4 SYR4 2014–2017
Barium
39.43 µg/L 2%
of the EPA limit 2000 µg/L
worst single sample: 40 µg/L
3/4 SYR4 2014–2017
92 contaminants tested, none detected
1,1,1-Trichloroethane1,1,2-Trichloroethane1,1-Dichloroethylene1,2,4-Trichlorobenzene1,2-DIBROMO-3-CHLOROPROPANE1,2-Dichloroethane1,2-Dichloropropane11Cl-PF3OUdS2,4,5-TP2,4-D4:2 Fts6:2 Fts8:2 Fts9Cl-PF3ONSAdonaAntimony, TotalArsenicAtrazineBhc-GammaBenzeneBenzo(A)PyreneBeryllium, TotalChlorobenzeneCyanideCadmiumCarbofuranCarbon TetrachlorideChlordaneChromiumDichloromethaneDalaponDi(2-ethylhexyl) AdipateDi(2-ethylhexyl) PhthalateDinosebDiquatEthylene DibromideEndothallEndrinEthylbenzeneGlyphosateGross Beta Particle ActivityHexachlorobenzeneHfpo-DaHeptachlorHeptachlor EpoxideHexachlorocyclopentadieneLassoMercuryMethoxychlorMonobromoacetic AcidMonochloroacetic AcidNetfosaaNfdhaNmefosaaNitriteOxamylPfbaPfdaPfdoaPfeesaPfhpaPfhpsPfhxaPFHXSPfmbaPfmpaPFNAPFOAPFOSPfpeaPfpesPftaPftrdaPfunaPentachlorophenolPicloramSeleniumSimazineStyreneTetrachloroethyleneThallium, TotalTolueneTotal Polychlorinated Biphenyls (PCB)ToxapheneTrichloroethyleneVinyl ChlorideXylenes, Totalcis-1,2-DichloroethyleneLithiumO-DichlorobenzeneP-Dichlorobenzenetrans-1,2-Dichloroethylene

Utility contact

Contact
AFFRUNTI, SARAH
Phone
513-896-3354
Email
[email protected]

Frequently asked questions about Southwest Regional Water District

Is Southwest Regional Water District tap water safe to drink?

EPA monitoring detected 17 contaminants in Southwest Regional Water District's water. A detection isn't the same as a violation — most levels are within federal limits. See each level and source above, and the utility's annual Consumer Confidence Report for its official compliance status.

What contaminants were detected in Southwest Regional Water District's water?

EPA monitoring detected Copper, Bromodichloromethane, Bromoform, Chloroform, Dibromochloromethane, and others. The full list with the level and data source for each is above.

How many people does Southwest Regional Water District serve?

Southwest Regional Water District reports serving 42,856 people in Ohio, per its EPA record.

Has Southwest Regional Water District had any water quality violations?

The EPA has no formal drinking-water violations on file for Southwest Regional Water District.

Where does this data come from?

Every figure is official EPA drinking-water monitoring — the Lead & Copper Rule, the UCMR-5 nationwide testing program, and the EPA Six-Year Review — not our own testing. Each number is labelled with its source and period.