republic-os/legislation/us/states/co/2023a/hb-23-1257.md

---
type: "Bill"
title: "Mobile Home Park Water Quality"
description: "The act creates a water testing program for mobile home parks (parks). The testing program is developed and administered by the water quality control division (division) in the department of public health and environment (department). The act also sets testing prioritization criteria and testing standards. Within 10 days after receiving test results, the division will notify the following of the test results and, if the testing reveals a water quality issue, include information about the availability of the complete test results, any violation of water quality standards, recommended actions, remediation, and the grant program established in the act:"
jurisdiction: "us/states/co"
legislature: "Colorado General Assembly"
session: "2023A"
identifier: "HB 23-1257"
citation: "Colorado HB 23-1257 (2023A)"
classification: ["bill"]
subjects: []
status: "enacted"
primary_sponsors: ["Andrew Boesenecker", "Elizabeth Velasco", "Kevin Priola", "Lisa Cutter"]
version_count: 12
action_count: 17
vote_count: 4
first_action: "2023-03-26T06:00:00+00:00"
last_action: "2023-06-05T06:00:00+00:00"
source: "openstates"
source_identifier: "ocd-bill/f160b920-ef0f-40c2-b282-ebcd8ee8f068"
source_url: "https://leg.colorado.gov/bills/hb23-1257"
source_hash: "0a3830bc2c82dccff83bc2936a33fa043449ea27113d608af3bd9d72c9302382"
vintage: "2026-07-01"
source_snapshot: "https://data.openstates.org/daily/2026-07-01/public.pgdump"
retrieved_at: "2026-07-06"
confidence: "reported"
tags: ["legislation", "bill", "us-co"]
---

# Colorado HB 23-1257 (2023A) — Mobile Home Park Water Quality

The act creates a water testing program for mobile home parks (parks). The testing program is developed and administered by the water quality control division (division) in the department of public health and environment (department). The act also sets testing prioritization criteria and testing standards. Within 10 days after receiving test results, the division will notify the following of the test results and, if the testing reveals a water quality issue, include information about the availability of the complete test results, any violation of water quality standards, recommended actions, remediation, and the grant program established in the act:

## Version chain

The bill's text revisions, in order — the diff chain from filing to enrollment.

1. **Committee Amendment** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_hb1257_s_app_004.pdf)
2. **Engrossed (04/26/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_eng.pdf)
3. **Final Act (05/22/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_enr.pdf)
4. **Introduced (03/26/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_01.pdf)
5. **PA1 (04/13/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_h_thl_01.pdf)
6. **PA2 (04/25/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_h_thl_app_01.pdf)
7. **PA3 (05/05/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_s_fin_01.pdf)
8. **PA4 (05/05/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_s_fin_app_01.pdf)
9. **Reengrossed (04/29/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_ren.pdf)
10. **Rerevised (05/06/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_rer.pdf)
11. **Revised (05/05/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/documents/2023A/bills/2023a_1257_rev.pdf)
12. **Signed Act (06/05/2023)** (committee substitute) — [source](https://leg.colorado.gov/sites/default/files/2023a_1257_signed.pdf)

## Votes

- CONCUR — **47–17** (pass) · lower
- REPASS — **46–18** (pass) · lower
- BILL — **24–10** (pass) · upper
- BILL — **45–18** (pass) · lower

## Sponsors

- Andrew Boesenecker — primary (person)
- Elizabeth Velasco — primary (person)
- Kevin Priola — primary (person)
- Lisa Cutter — primary (person)

## Timeline

The legislative action history — every referral, reading, and vote.

- **2023-06-05T06:00:00+00:00** Governor Signed `executive-signature`
- **2023-05-22T06:00:00+00:00** Sent to the Governor `executive-receipt`
- **2023-05-22T06:00:00+00:00** Signed by the President of the Senate
- **2023-05-22T06:00:00+00:00** Signed by the Speaker of the House
- **2023-05-07T06:00:00+00:00** House Considered Senate Amendments - Result was to Concur - Repass
- **2023-05-06T06:00:00+00:00** Senate Third Reading Passed - No Amendments `passage, reading-3`
- **2023-05-05T06:00:00+00:00** Senate Second Reading Special Order - Passed with Amendments - Committee
- **2023-05-05T06:00:00+00:00** Senate Committee on Appropriations Refer Amended to Senate Committee of the Whole `committee-passage, referral-committee`
- **2023-05-04T06:00:00+00:00** Senate Committee on Finance Refer Amended to Appropriations `referral-committee`
- **2023-05-01T06:00:00+00:00** Introduced In Senate - Assigned to Finance `introduction`
- **2023-04-29T06:00:00+00:00** House Third Reading Passed - No Amendments `passage, reading-3`
- **2023-04-27T06:00:00+00:00** House Third Reading Laid Over Daily - No Amendments
- **2023-04-26T06:00:00+00:00** House Second Reading Special Order - Passed with Amendments - Committee, Floor
- **2023-04-25T06:00:00+00:00** House Committee on Appropriations Refer Amended to House Committee of the Whole `committee-passage, referral-committee`
- **2023-04-17T06:00:00+00:00** House Committee on Finance Refer Unamended to Appropriations `referral-committee`
- **2023-04-12T06:00:00+00:00** House Committee on Transportation, Housing & Local Government Refer Amended to Finance `referral-committee`
- **2023-03-26T06:00:00+00:00** Introduced In House - Assigned to Transportation, Housing & Local Government `introduction`

## Source

OpenStates / OpenCivicData bulk snapshot [2026-07-01](https://data.openstates.org/daily/2026-07-01/public.pgdump); origin `ocd-bill/f160b920-ef0f-40c2-b282-ebcd8ee8f068`. Confidence: reported (aggregated from official Colorado legislature records).