OHA Drinking Water Services
OR41
PWS ID: 00252 ---- DAYTON, CITY OF
LRAAs and OELs

LRAA = Locational running annual average; OEL = Operational evaluation level. Learn about OELs here.
Averages are subject to change as new data is taken into consideration.

TTHM MCL = 0.080 mg/L,  HAA5 MCL = 0.060 mg/L.  MCL exceedances are indicated with red text.

Monitoring
Period		 Last
Sample		 Sample
Point		 Location TTHM
LRAA		 TTHM
OEL		 HAA5
LRAA		 HAA5
OEL
3Q2025 Jul 11, 2025 2DBP-01 DAYTON RV PARK HYDRANT 0 0 0 0
3Q2025 Jul 11, 2025 2DBP-02 PALMER LINE HYDRANT 0 0 0 0
2Q2025 Apr 03, 2025 2DBP-01 DAYTON RV PARK HYDRANT 0 0 0 0
2Q2025 Apr 03, 2025 2DBP-02 PALMER LINE HYDRANT 0 0 0 0
1Q2025 Mar 04, 2025 2DBP-01 DAYTON RV PARK HYDRANT 0 0 0 0
1Q2025 Mar 04, 2025 2DBP-02 PALMER LINE HYDRANT 0 0 0 0
4Q2024 Dec 11, 2024 2DBP-01 DAYTON RV PARK HYDRANT 0 0 0 0
4Q2024 Dec 11, 2024 2DBP-02 PALMER LINE HYDRANT 0 0 0 0
3Q2014 Aug 13, 2014 2DBP-01 DAYTON RV PARK HYDRANT 0.001 0 0 0
3Q2014 Aug 13, 2014 2DBP-02 PALMER LINE HYDRANT 0.018 0.009 0.007 0.004
2Q2014 May 07, 2014 2DBP-01 DAYTON RV PARK HYDRANT 0.001 0.001 0 0
2Q2014 May 07, 2014 2DBP-02 PALMER LINE HYDRANT 0.014 0.015 0.006 0.008
1Q2014 Feb 12, 2014 2DBP-01 DAYTON RV PARK HYDRANT 0 0
1Q2014 Feb 12, 2014 2DBP-02 PALMER LINE HYDRANT 0.014 0.006
4Q2013 Nov 06, 2013 2DBP-01 DAYTON RV PARK HYDRANT 0 0
4Q2013 Nov 06, 2013 2DBP-02 PALMER LINE HYDRANT 0.013 0.005