Hardness
Very Hard
184.5 PPM · 10.8 GPG
Local water dashboard
Official source aggregationA source-transparent look at local hardness, associated public water systems, EPA compliance history, and the measurements that are—and are not—available for Okmulgee County.
At a glance
EPA quarter 2026Q2
Hardness
Very Hard
184.5 PPM · 10.8 GPG
Compliance screen
No active flag
0 active health-based records
Lead 90th percentile
0.0016 mg/L
11% of action level
Utility match
1 system
Serves 1,460 people system-wide
Hardness meter
Estimated local hardness
USGS hardness classification scale
184.5 PPM
Parts per million
184.5
mg/L as CaCO₃ equivalent
Grains per gallon
10.8
1 GPG ≈ 17.1 PPM
What this means at home
At 184.5 PPM, mineral scale can build up on fixtures and heating elements, reduce soap lather, and leave visible spotting. Hardness is primarily an aesthetic and appliance concern—not itself a tap-water safety rating.
USGS sites used
16
Nearest site
22.7 mi
Observation range
May 23, 2016–Mar 21, 2019
Estimate confidence
Moderate
Median of the latest qualifying hardness observation at each nearby monitoring site. Nearest monitoring location: 17N-16E-29 DCC 1 (Well).USGS source documentation ↗
Regional context
These comparisons use other indexed ZIP estimates, not utility tap samples. They help show local context without replacing a household test.
Morris median
185 PPM
About the same1 indexed ZIP readings · Range 184.5–184.5 PPM
Oklahoma median
226 PPM
41 PPM lower148 indexed ZIP readings · Range 7–610 PPM
EPA benchmark screen
Available numerical results from associated SDWIS community water systems, compared with the applicable action level or federal MCL. Federal measured-value coverage is incomplete.
Lead (PB90)
0.0016 mg/L
Reported Dec 31, 2025
Copper (CU90)
Not available
No numerical 90th-percentile result
Numerical coverage
3 comparable results
Missing values remain blank; absence is not treated as a pass.
Measured in mg/L
Local 0.0016
EPA limit 0.015
Measured in MG/L
Local 0.093
EPA limit 0.08
Measured in MG/L
Local 0.064
EPA limit 0.06
100% line = listed limit
| Contaminant or rule | System | Status | Period |
|---|---|---|---|
| Lead and Copper Rule | OK3005610 | Resolved | Jul 1, 2023through Sep 1, 2023 |
| Lead and Copper Rule | OK3005610 | Resolved | Jan 1, 2023through Sep 1, 2023 |
| TTHM | OK3005610 | Resolved | Sep 29, 2022through Jun 5, 2023 |
| TTHMHealth-basedReported 0.093 MG/L · MCL 0.08 | OK3005610 | Resolved | Jul 1, 2022through Sep 30, 2022 |
| TTHMHealth-basedReported 0.087 MG/L · MCL 0.08 | OK3005610 | Archived | Jul 1, 2022through Sep 30, 2022 |
| Total Haloacetic Acids (HAA5) | OK3005610 | Resolved | Apr 1, 2022through Nov 1, 2022 |
| TTHMHealth-basedReported 0.098 MG/L · MCL 0.08 | OK3005610 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.064 MG/L · MCL 0.06 | OK3005610 | Archived | Apr 1, 2022through Jun 30, 2022 |
| TTHM | OK3005610 | Resolved | Apr 1, 2022through Nov 1, 2022 |
| TTHMHealth-basedReported 0.101 MG/L · MCL 0.08 | OK3005610 | Resolved | Apr 1, 2022through Jun 30, 2022 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.069 MG/L · MCL 0.06 | OK3005610 | Archived | Jan 1, 2022through Mar 31, 2022 |
| TTHMHealth-basedReported 0.105 MG/L · MCL 0.08 | OK3005610 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| TTHMHealth-basedReported 0.1 MG/L · MCL 0.08 | OK3005610 | Resolved | Jan 1, 2022through Mar 31, 2022 |
| TTHMHealth-basedReported 0.11 MG/L · MCL 0.08 | OK3005610 | Resolved | Oct 1, 2021through Dec 31, 2021 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.072 MG/L · MCL 0.06 | OK3005610 | Archived | Oct 1, 2021through Dec 31, 2021 |
| TTHMHealth-basedReported 0.108 MG/L · MCL 0.08 | OK3005610 | Resolved | Oct 1, 2021through Dec 31, 2021 |
| TTHMHealth-basedReported 0.101 MG/L · MCL 0.08 | OK3005610 | Archived | Jul 1, 2021through Sep 30, 2021 |
| TTHMHealth-basedReported 0.101 MG/L · MCL 0.08 | OK3005610 | Archived | Jul 1, 2021through Sep 30, 2021 |
| Total Haloacetic Acids (HAA5)Health-basedReported 0.065 MG/L · MCL 0.06 | OK3005610 | Resolved | Jul 1, 2021through Sep 30, 2021 |
| TTHM | OK3005610 | Resolved | Jun 30, 2021through Sep 17, 2021 |
No reported violation does not prove that every contaminant was tested or absent; SDWIS measured values are incomplete and lag state records.
Solutions matcher
Matched to Morris ZIP 74445 using 184.5 PPM nearby hardness and 3 reported measurement benchmarks.
Scale protection
184.5 PPM is 2× the high-hardness trigger used by this matcher.
Designed to reduce scale on fixtures, water heaters, glassware, and plumbing throughout the home.
Compare whole-house systemsDrinking water protection
TTHM, Total Haloacetic Acids (HAA5) have a measured benchmark flag or active health-based SDWIS record in this profile.
A certified multi-stage RO system targets a broader range of dissolved contaminants at the kitchen tap.
Explore under-sink filtrationAffiliate disclosure: we may earn a commission from qualifying purchases, at no added cost to you. Product matching is educational and does not replace certified water testing.
Frequently asked
EPA ECHO shows no active health-based violation for the associated systems in this reporting snapshot. This does not prove every contaminant is absent; federal records can lag and household plumbing can change tap conditions.
Nearby USGS observations produce an estimate of 184.5 PPM, or 10.8 grains per gallon, classified as very hard. This is not a household tap measurement.
At 184.5 PPM, a correctly sized whole-house softener can reduce scale and hard-water spotting. It does not replace contaminant filtration.