Water Quality in Dayton, OH (45042)
EPA violation data for public water systems serving ZIP code 45042.
No Health-Based Violations
None of the 51 water systems serving this ZIP have exceeded federal contaminant limits in the past 5 years. There are48 monitoring/reporting violations (missed testing deadlines), all resolved.
Better than 90% of US ZIP codes.
Based on EPA compliance data. Not a substitute for an official water quality report from your utility.
27,652
Population
51
Water Systems
48
Violations (5yr)
0
Health-Based
Location
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Water Systems Serving This Area (51)
Dayton, City Of-Ottawa Plant
Groundwater under influence of surface water 236,000 people served
0 violations
Dayton, City Of-Miami Plant
Groundwater under influence of surface water 184,000 people served
0 violations
Montgomery County Water Services 1 Pws
Purchased surface water 150,207 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Montgomery Co:Water System # 1
Purchased groundwater 150,000 people served
0 violations
Dayton Public Water System
Surface water 141,407 people served
0 violations
Lead tested: 470 ppb (limit: 15 ppb)
Montgomery Co,Gr.Moraine-Bv.Cr
Groundwater 141,000 people served
0 violations
Butler Co. Water District 2 Pws
All resolved Purchased surface water 116,572 people served
3 violations (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓
Montgomery County Water Services 2 Pws
Purchased surface water 83,033 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Warren County
All resolved Groundwater 78,299 people served
2 violations (5yr)
· All resolved
Lead tested: 1.4 ppb (limit: 15 ppb) ✓
Hamilton Public Water System
All resolved Groundwater 62,447 people served
1 violation (5yr)
· All resolved
Lead tested: 2 ppb (limit: 15 ppb) ✓
Hamilton/South Water Plant
Groundwater 52,920 people served
0 violations
Middletown City Pws
Groundwater 51,229 people served
0 violations
Lead tested: 1.14 ppb (limit: 15 ppb) ✓
Fairfield City Pws
Groundwater 44,907 people served
0 violations
Lead tested: 2.4 ppb (limit: 15 ppb) ✓
Huber Heights Public Water System
Groundwater 43,439 people served
0 violations
Lead tested: 0 ppb (limit: 15 ppb) ✓
Southwest Regional Water District
Groundwater 42,856 people served
0 violations
Lead tested: 1.3 ppb (limit: 15 ppb) ✓
Western Water Company
Purchased surface water 39,508 people served
1 violation (5yr)
Lead tested: 1.3 ppb (limit: 15 ppb) ✓
Kings Island Pws
All resolved Groundwater 31,753 people served
22 violations (5yr)
· All resolved
Lead tested: 0 ppb (limit: 15 ppb) ✓ Copper tested: 1360 ppb (limit: 1300 ppb)
Oxford City Pws
Groundwater 24,000 people served
0 violations
Lead tested: 2.4 ppb (limit: 15 ppb) ✓
Swr Water District South Plant Pws
Groundwater 19,098 people served
0 violations
Sunoco #3208 Pws
Groundwater 1,500 people served
0 violations
Catalina Mobile Home Park
Groundwater 1,280 people served
2 violations (5yr)
Mcgee'S Supermarket #2
Groundwater 857 people served
0 violations
Poasttown Elem. School
Groundwater 655 people served
0 violations
Mgr,Woody'S Water Service Co.
Purchased groundwater 600 people served
0 violations
J&E Rootbeer
Groundwater 225 people served
0 violations
Mgr,Lesourdsville Water Co,Inc
Groundwater 200 people served
0 violations
Wally Gator Pizza & Ice
Groundwater 200 people served
0 violations
Mgr,Middletown Mobile Home Pk.
Groundwater 150 people served
0 violations
Pleasant Hill Golf Course
Groundwater 150 people served
0 violations
Church Of Latter Day Sai
Groundwater 125 people served
0 violations
Nnck Marathon
Groundwater 100 people served
16 violations (5yr)
Tom Norris Live Fishing
Groundwater 100 people served
0 violations
Fellowship Of Praise West
Groundwater 75 people served
0 violations
Construction Careers Of America
Groundwater under influence of surface water 60 people served
0 violations
Christian Assembly Of God Daycare Pws
Groundwater 40 people served
0 violations
Score Chrysler Plymouth
Groundwater 40 people served
0 violations
Mgr,Georgetown Apartments
Groundwater 38 people served
0 violations
Regal Packaging Company
Groundwater 35 people served
0 violations
Naws Club Llc
Groundwater 30 people served
0 violations
Lindon'S Gmc, Inc.
Groundwater 30 people served
0 violations
Jeff'S Market
Groundwater 28 people served
0 violations
Bob'S Drive Thru
Groundwater 25 people served
0 violations
Pates Bar And Carry Out
Groundwater 25 people served
0 violations
Ohio Business College-Middletown
All resolved Groundwater 25 people served
1 violation (5yr)
· All resolved
Poastown Sales Barn
Groundwater 25 people served
0 violations
Westside Pizza Pws
Groundwater 25 people served
0 violations
Volkswagon Of Middletown
Groundwater 25 people served
0 violations
Twighlight Inn
Purchased groundwater 25 people served
0 violations
Bp Oil Co. I2338
Groundwater 25 people served
0 violations
Starlight Club
Groundwater 25 people served
0 violations
Middletown Sportsman Club Pws
Groundwater 25 people served
0 violations
Contaminants Found
Public NoticeMonitoring
9 violations
Has active
Revised Total Coliform RuleMonitoring
Missed testing deadlines — not a detection of bacteria.
9 violations
All resolved
Consumer Confidence RuleMonitoring
Annual water quality report delivery requirement.
5 violations
Has active
Total Haloacetic Acids (HAA5)Monitoring
2 violations
All resolved
ChloriteMonitoring
1 violation
All resolved
BenzeneMonitoring
1 violation
All resolved
1,2,4-TrichlorobenzeneMonitoring
1 violation
All resolved
o-DichlorobenzeneMonitoring
1 violation
All resolved
1,1,1-TrichloroethaneMonitoring
1 violation
All resolved
1,2-DichloropropaneMonitoring
1 violation
All resolved
CHLOROBENZENEMonitoring
1 violation
All resolved
1,2-DichloroethaneMonitoring
1 violation
All resolved
cis-1,2-DichloroethyleneMonitoring
1 violation
All resolved
Vinyl chlorideMonitoring
1 violation
All resolved
Carbon tetrachlorideMonitoring
1 violation
All resolved
DICHLOROMETHANEMonitoring
1 violation
All resolved
trans-1,2-DichloroethyleneMonitoring
1 violation
All resolved
EthylbenzeneMonitoring
1 violation
All resolved
StyreneMonitoring
1 violation
All resolved
TetrachloroethyleneMonitoring
1 violation
All resolved
p-DichlorobenzeneMonitoring
1 violation
All resolved
1,1-DichloroethyleneMonitoring
1 violation
All resolved
Xylenes, TotalMonitoring
1 violation
All resolved
TrichloroethyleneMonitoring
1 violation
All resolved
TolueneMonitoring
1 violation
All resolved
1,1,2-TrichloroethaneMonitoring
1 violation
All resolved
Lead and Copper RuleMonitoring
Lead and copper testing requirement. Lead exposure can cause developmental harm in children.
1 violation
All resolved
Lead & Copper Levels
Lead (Pb)
Within limit1.4 ppb measured
Action level: 15 ppb
Sampled: Jul 2025
Copper (Cu)
Exceeds limit1360 ppb measured
Action level: 1300 ppb
Sampled: Jul 2024
How Does This Compare?
Dayton (45042) has more violations than 90% of US ZIP codes. The national average is 18.87 violations per ZIP over 5 years. This ZIP has 48, most of which are monitoring/reporting issues.
Fewer violations 90th percentile More violations
Water Filter Recommendations
No contaminant issues detected. For general protection, a basic carbon filter removes common impurities like chlorine and sediment. Look for NSF/ANSI 42 certified products.